Self-reported wellness profiles of professional australian football players during the competition phase of the season
- Gallo, Tania, Cormack, Stuart, Gabbett, Tim, Lorenzen, Christian
- Authors: Gallo, Tania , Cormack, Stuart , Gabbett, Tim , Lorenzen, Christian
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 31, no. 2 (2017), p. 495-502
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- Description: With the prevalence of customized self-report measures in high-performance sport, and the incomplete understanding of athletes' perceived wellness in response to matches and training load, the objective of this study was to explore weekly wellness profiles within the context of the competitive season of professional Australian football. Internal match load, measured through the session-rating of perceived exertion method, match-to-match microcycle, stage of the season, and training load were included in multivariate linear models to determine their effect on weekly wellness profile (n = 1,835). There was a lower weekly training load on a 6-day microcycle compared with a 7-day and 8-day microcycle. Match load had no significant impact on weekly wellness profile, while there was an interaction between microcycle and days postmatch. There was a likely moderately lower wellness Z-score 1 day postmatch for an 8-day microcycle (mean; 95% confidence interval: -1.79; -2.02 to -1.56) compared with a 6-day (-1.19; -1.30 to -1.08) and 7-day (-1.22; -1.34 to -1.09) cycle (d; 95% confidence interval: -0.82; -1.3 to -0.36, -0.78; -1.3 to -0.28, respectively). The second half of the season saw a possibly small reduction in overall wellness Z-score than the first half of the season (0.22; 0.12-0.32). Finally, training load had no effect on wellness Z-score when controlled for days postmatch, microcycle, and stage of the season. These results provide information on the status of players in response to matches and fixed conditions. Knowing when wellness Z-score returns to baseline relative to the length of the microcycle may lead practitioners to prescribe the heaviest load of the week accordingly. Furthermore, wellness "red flags" should be made relative to the microcycles and stage of the season to determine an athlete's status relative to their typical weekly profile. © 2016 National Strength and Conditioning Association.
- Authors: Gallo, Tania , Cormack, Stuart , Gabbett, Tim , Lorenzen, Christian
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 31, no. 2 (2017), p. 495-502
- Full Text:
- Reviewed:
- Description: With the prevalence of customized self-report measures in high-performance sport, and the incomplete understanding of athletes' perceived wellness in response to matches and training load, the objective of this study was to explore weekly wellness profiles within the context of the competitive season of professional Australian football. Internal match load, measured through the session-rating of perceived exertion method, match-to-match microcycle, stage of the season, and training load were included in multivariate linear models to determine their effect on weekly wellness profile (n = 1,835). There was a lower weekly training load on a 6-day microcycle compared with a 7-day and 8-day microcycle. Match load had no significant impact on weekly wellness profile, while there was an interaction between microcycle and days postmatch. There was a likely moderately lower wellness Z-score 1 day postmatch for an 8-day microcycle (mean; 95% confidence interval: -1.79; -2.02 to -1.56) compared with a 6-day (-1.19; -1.30 to -1.08) and 7-day (-1.22; -1.34 to -1.09) cycle (d; 95% confidence interval: -0.82; -1.3 to -0.36, -0.78; -1.3 to -0.28, respectively). The second half of the season saw a possibly small reduction in overall wellness Z-score than the first half of the season (0.22; 0.12-0.32). Finally, training load had no effect on wellness Z-score when controlled for days postmatch, microcycle, and stage of the season. These results provide information on the status of players in response to matches and fixed conditions. Knowing when wellness Z-score returns to baseline relative to the length of the microcycle may lead practitioners to prescribe the heaviest load of the week accordingly. Furthermore, wellness "red flags" should be made relative to the microcycles and stage of the season to determine an athlete's status relative to their typical weekly profile. © 2016 National Strength and Conditioning Association.
What factors affect implementation of early rehabilitation into intensive care unit practice? A qualitative study with clinicians
- Parry, Selina, Remedios, Louisa, Denehy, Linda, Knight, Laura, Beach, Lisa, Rollinson, Thomas, Berney, Sue, Puthucheary, Zudin, Morris, Peter, Granger, Catherine
- Authors: Parry, Selina , Remedios, Louisa , Denehy, Linda , Knight, Laura , Beach, Lisa , Rollinson, Thomas , Berney, Sue , Puthucheary, Zudin , Morris, Peter , Granger, Catherine
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of Critical Care Vol. 38, no. (2017), p. 137-143
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- Description: Purpose To identify the barriers and enablers that influence clinicians' implementation of early rehabilitation in critical care. Materials and methods Qualitative study involving 26 multidisciplinary participants who were recruited using purposive sampling. Four focus groups were conducted using semistructured questions to explore attitudes, beliefs, and experiences. Data were transcribed verbatim and thematic analysis was performed. Results Six themes emerged, as follows: (1) the clinicians' expectations and knowledge (including rationale for rehabilitation, perceived benefits, and experience), (2) the evidence for and application of rehabilitation (including beliefs regarding when to intervene), (3) patient factors (including prognosis, sedation, delirium, cooperation, motivation, goals, and family), (4) safety considerations (including physiological stability and presence of devices or lines), (5) environmental influences (staffing, resources, equipment, time, and competing priorities), and (6) culture and teamwork. Key strategies identified to facilitate rehabilitation included addressing educational needs for all multidisciplinary team members, supporting junior nursing staff, and potential expansion of physiotherapy staffing hours to closer align with the 24-hour patient care model. Conclusions Key barriers to implementation of early rehabilitation in critical care are diverse and include both clinician- and health care system–related factors. Research targeted at bridging this evidence-practice gap is required to improve provision of rehabilitation. © 2016 Elsevier Inc.
- Authors: Parry, Selina , Remedios, Louisa , Denehy, Linda , Knight, Laura , Beach, Lisa , Rollinson, Thomas , Berney, Sue , Puthucheary, Zudin , Morris, Peter , Granger, Catherine
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of Critical Care Vol. 38, no. (2017), p. 137-143
- Full Text:
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- Description: Purpose To identify the barriers and enablers that influence clinicians' implementation of early rehabilitation in critical care. Materials and methods Qualitative study involving 26 multidisciplinary participants who were recruited using purposive sampling. Four focus groups were conducted using semistructured questions to explore attitudes, beliefs, and experiences. Data were transcribed verbatim and thematic analysis was performed. Results Six themes emerged, as follows: (1) the clinicians' expectations and knowledge (including rationale for rehabilitation, perceived benefits, and experience), (2) the evidence for and application of rehabilitation (including beliefs regarding when to intervene), (3) patient factors (including prognosis, sedation, delirium, cooperation, motivation, goals, and family), (4) safety considerations (including physiological stability and presence of devices or lines), (5) environmental influences (staffing, resources, equipment, time, and competing priorities), and (6) culture and teamwork. Key strategies identified to facilitate rehabilitation included addressing educational needs for all multidisciplinary team members, supporting junior nursing staff, and potential expansion of physiotherapy staffing hours to closer align with the 24-hour patient care model. Conclusions Key barriers to implementation of early rehabilitation in critical care are diverse and include both clinician- and health care system–related factors. Research targeted at bridging this evidence-practice gap is required to improve provision of rehabilitation. © 2016 Elsevier Inc.
The combined effect of cranial-nerve non-invasive neuromodulation with high-intensity physiotherapy on gait and balance in a patient with cerebellar degeneration: a case report
- Bastani, Andisheh, Cofré Lizama, L. Eduardo, Zoghi, Maryam, Blashki, Grant, Davis, Stephen, Kaye, Andrew, Khan, Fary, Galea, Mary
- Authors: Bastani, Andisheh , Cofré Lizama, L. Eduardo , Zoghi, Maryam , Blashki, Grant , Davis, Stephen , Kaye, Andrew , Khan, Fary , Galea, Mary
- Date: 2018
- Type: Text , Journal article
- Relation: Cerebellum Ataxias Vol. 5, no. 1 (2018), p. 6
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- Description: Cranial-nerve non-invasive neuromodulation (CN-NINM) using the portable neuromodulation stimulator (PoNS™ device has been proposed as a novel adjuvant intervention to improve efficacy of gait and balance. This device modulates input and output signals during motor tasks which prompts neuroplastic changes. In this study, we investigated the efficacy of physiotherapy using the PoNS™ in a case with cerebellar degeneration. The PoNS™ was used during a high-intensity physiotherapy programme delivered over 2 weeks (2 × 1.5 h sessions daily). Clinical and instrumented gait and balance tests were applied pre- and post-intervention. The patient improved in all tests without any adverse effects. This study showed the efficacy and feasibility of combined high-intensity physiotherapy and CN-NINM for gait and balance rehabilitation. Further studies should explore CN-NINM effects in larger and more diverse samples of neurological patients.
- Authors: Bastani, Andisheh , Cofré Lizama, L. Eduardo , Zoghi, Maryam , Blashki, Grant , Davis, Stephen , Kaye, Andrew , Khan, Fary , Galea, Mary
- Date: 2018
- Type: Text , Journal article
- Relation: Cerebellum Ataxias Vol. 5, no. 1 (2018), p. 6
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- Description: Cranial-nerve non-invasive neuromodulation (CN-NINM) using the portable neuromodulation stimulator (PoNS™ device has been proposed as a novel adjuvant intervention to improve efficacy of gait and balance. This device modulates input and output signals during motor tasks which prompts neuroplastic changes. In this study, we investigated the efficacy of physiotherapy using the PoNS™ in a case with cerebellar degeneration. The PoNS™ was used during a high-intensity physiotherapy programme delivered over 2 weeks (2 × 1.5 h sessions daily). Clinical and instrumented gait and balance tests were applied pre- and post-intervention. The patient improved in all tests without any adverse effects. This study showed the efficacy and feasibility of combined high-intensity physiotherapy and CN-NINM for gait and balance rehabilitation. Further studies should explore CN-NINM effects in larger and more diverse samples of neurological patients.
Can the workload–injury relationship be moderated by improved strength, speed and repeated-sprint qualities?
- Malone, Shane, Hughes, Brian, Doran, Dominic, Collins, Kieran, Gabbett, Tim
- Authors: Malone, Shane , Hughes, Brian , Doran, Dominic , Collins, Kieran , Gabbett, Tim
- Date: 2019
- Type: Text , Journal article
- Relation: Journal of Science and Medicine in Sport Vol. 22, no. 1 (2019), p. 29-34
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- Description: Objectives: The aim of this study was to investigate potential moderators (i.e. lower body strength, repeated-sprint ability [RSA] and maximal velocity) of injury risk within a team-sport cohort. Design: Observational cohort study. Methods: Forty male amateur hurling players (age: 26.2 ± 4.4 year, height: 184.2 ± 7.1 cm, mass: 82.6 ± 4.7 kg) were recruited. During a two-year period, workload (session RPE × duration), injury and physical qualities were assessed. Specific physical qualities assessed were a three-repetition maximum Trapbar deadlift, 6 × 35-m repeated-sprint (RSA) and 5-, 10- and 20-m sprint time. All derived workload and physical quality measures were modelled against injury data using regression analysis. Odds ratios (OR) were reported against a reference group. Results: Moderate weekly loads between ≥1400 AU and ≤1900 AU were protective against injury during both the pre-season (OR: 0.44, 95% CI: 0.18–0.66) and in-season periods (OR: 0.59, 95% CI: 0.37–0.82) compared to a low load reference group (≤1200 AU). When strength was considered as a moderator of injury risk, stronger athletes were better able to tolerate the given workload at a reduced risk. Stronger athletes were also better able to tolerate larger week-to-week changes (>550–1000 AU) in workload than weaker athletes (OR = 2.54–4.52). Athletes who were slower over 5-m (OR: 3.11, 95% CI: 2.33–3.87), 10-m (OR: 3.45, 95% CI: 2.11–4.13) and 20-m (OR: 3.12, 95% CI: 2.11–4.13) were at increased risk of injury compared to faster athletes. When repeated-sprint total time (RSAt) was considered as a moderator of injury risk at a given workload (≥1750 AU), athletes with better RSAt were at reduced risk compared to those with poor RSAt (OR: 5.55, 95%: 3.98–7.94). Conclusions: These findings demonstrate that well-developed lower-body strength, RSA and speed are associated with better tolerance to higher workloads and reduced risk of injury in team-sport athletes. © 2018 Sports Medicine Australia
- Authors: Malone, Shane , Hughes, Brian , Doran, Dominic , Collins, Kieran , Gabbett, Tim
- Date: 2019
- Type: Text , Journal article
- Relation: Journal of Science and Medicine in Sport Vol. 22, no. 1 (2019), p. 29-34
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- Description: Objectives: The aim of this study was to investigate potential moderators (i.e. lower body strength, repeated-sprint ability [RSA] and maximal velocity) of injury risk within a team-sport cohort. Design: Observational cohort study. Methods: Forty male amateur hurling players (age: 26.2 ± 4.4 year, height: 184.2 ± 7.1 cm, mass: 82.6 ± 4.7 kg) were recruited. During a two-year period, workload (session RPE × duration), injury and physical qualities were assessed. Specific physical qualities assessed were a three-repetition maximum Trapbar deadlift, 6 × 35-m repeated-sprint (RSA) and 5-, 10- and 20-m sprint time. All derived workload and physical quality measures were modelled against injury data using regression analysis. Odds ratios (OR) were reported against a reference group. Results: Moderate weekly loads between ≥1400 AU and ≤1900 AU were protective against injury during both the pre-season (OR: 0.44, 95% CI: 0.18–0.66) and in-season periods (OR: 0.59, 95% CI: 0.37–0.82) compared to a low load reference group (≤1200 AU). When strength was considered as a moderator of injury risk, stronger athletes were better able to tolerate the given workload at a reduced risk. Stronger athletes were also better able to tolerate larger week-to-week changes (>550–1000 AU) in workload than weaker athletes (OR = 2.54–4.52). Athletes who were slower over 5-m (OR: 3.11, 95% CI: 2.33–3.87), 10-m (OR: 3.45, 95% CI: 2.11–4.13) and 20-m (OR: 3.12, 95% CI: 2.11–4.13) were at increased risk of injury compared to faster athletes. When repeated-sprint total time (RSAt) was considered as a moderator of injury risk at a given workload (≥1750 AU), athletes with better RSAt were at reduced risk compared to those with poor RSAt (OR: 5.55, 95%: 3.98–7.94). Conclusions: These findings demonstrate that well-developed lower-body strength, RSA and speed are associated with better tolerance to higher workloads and reduced risk of injury in team-sport athletes. © 2018 Sports Medicine Australia
Social identification, exercise participation, and positive exercise experiences : evidence from parkrun
- Stevens, Mark, Rees, Tim, Polman, Remco
- Authors: Stevens, Mark , Rees, Tim , Polman, Remco
- Date: 2019
- Type: Text , Journal article
- Relation: Journal of Sports Sciences Vol. 37, no. 2 (2019), p. 221-228
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- Description: Growing evidence suggests that social identities may have profound implications for physical activity participation. Real-world examinations of this relationship have, however, been lacking, with research predominantly examining intentions and hypothetical scenarios. To address this shortcoming and further advance understanding in this area, the present study tested relationships between group identification, participation, two exercise-specific outcomes (exercise-specific satisfaction and group cohesion), and a broad health indicator (life satisfaction) among individuals recruited from parkrun. Participants (N = 289) completed questionnaires measuring all variables except participants’ parkrun participation, which was objectively assessed. Structural equation modeling demonstrated that group identification was significantly associated with greater participation, exercise-specific satisfaction, group cohesion, and life satisfaction. Findings provide real-world evidence of the health-related benefits associated with forming strong social identities in exercise settings. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
- Authors: Stevens, Mark , Rees, Tim , Polman, Remco
- Date: 2019
- Type: Text , Journal article
- Relation: Journal of Sports Sciences Vol. 37, no. 2 (2019), p. 221-228
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- Description: Growing evidence suggests that social identities may have profound implications for physical activity participation. Real-world examinations of this relationship have, however, been lacking, with research predominantly examining intentions and hypothetical scenarios. To address this shortcoming and further advance understanding in this area, the present study tested relationships between group identification, participation, two exercise-specific outcomes (exercise-specific satisfaction and group cohesion), and a broad health indicator (life satisfaction) among individuals recruited from parkrun. Participants (N = 289) completed questionnaires measuring all variables except participants’ parkrun participation, which was objectively assessed. Structural equation modeling demonstrated that group identification was significantly associated with greater participation, exercise-specific satisfaction, group cohesion, and life satisfaction. Findings provide real-world evidence of the health-related benefits associated with forming strong social identities in exercise settings. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.
Investigation in to the positional running demands of elite gaelic football players : how competition data can inform training practice
- McGahan, Jason, Burns, Con, Lacey, Sean, Gabbett, Tim, O'Neil, Cian
- Authors: McGahan, Jason , Burns, Con , Lacey, Sean , Gabbett, Tim , O'Neil, Cian
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 34, no. 7 (2020), p. 2040-2047
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- Description: This study investigated the positional running demands of elite Gaelic football players during match play and compared these demands with typical training activities used to prepare players for competition. Global positioning system (GPS) data were obtained from 30 elite Gaelic football players (26.9 ± 3.5 years, 182.8 ± 6.1 cm, 84.6 ± 8.1 kg) across a full season (13 competitive games and 78 training sessions). Only players who completed the full match and respective training sessions were included (n = 107 match files and n = 1,603 training files). Data were collected using 4-Hz GPS units (VX Sport, Lower Hutt, New Zealand). Mean high speed (
- Authors: McGahan, Jason , Burns, Con , Lacey, Sean , Gabbett, Tim , O'Neil, Cian
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 34, no. 7 (2020), p. 2040-2047
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- Description: This study investigated the positional running demands of elite Gaelic football players during match play and compared these demands with typical training activities used to prepare players for competition. Global positioning system (GPS) data were obtained from 30 elite Gaelic football players (26.9 ± 3.5 years, 182.8 ± 6.1 cm, 84.6 ± 8.1 kg) across a full season (13 competitive games and 78 training sessions). Only players who completed the full match and respective training sessions were included (n = 107 match files and n = 1,603 training files). Data were collected using 4-Hz GPS units (VX Sport, Lower Hutt, New Zealand). Mean high speed (
The effect of an 8 week prescribed exercise and low-carbohydrate diet on cardiorespiratory fitness, body composition and cardiometabolic risk factors in obese individuals: A randomised controlled trial
- Perissiou, Maria, Borkoles, Erika, Kobayashi, Kent, Polman, Remco
- Authors: Perissiou, Maria , Borkoles, Erika , Kobayashi, Kent , Polman, Remco
- Date: 2020
- Type: Text , Journal article
- Relation: Nutrients Vol. 12, no. 2 (2020), p. 482
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- Description: Low-carbohydrate (LC) diets are an effective method for treating obesity and reducing cardiometabolic risk. However, exposure to LC diets is associated with reductions in muscle mass and increased osteoporosis risk in obese individuals. The combination of exercise with a LC diet appears to attenuate muscle mass loss induced by LC diets alone, and to further improve cardiometabolic profile. However, evidence to date in obese individuals is limited. We assessed the effect of LC diet in combination with supervised exercise on cardiorespiratory fitness, body composition and cardiometabolic risk factors in obese individuals. Male and female participants in the experimental (EX-LC structured supervised exercise program + low-carbohydrate meals n = 33 35.3 years) and control (EX-CO structured supervised exercise program + standard dietary advice n = 31 34.2 years) conditions underwent measurements of cardiorespiratory fitness ( O peak), body fat, lean muscle mass (LMM), and cardiometabolic biomarkers before and after an 8 week intervention. : Participants in the EX-LC condition demonstrated greater improvements in O peak ( = 0.002) and fat mass index (FMI, = 0.001) compared to the EX-CO condition. Achieving a ketogenic state (β-hydroxybutyrate, βHB ≥0.3 mmol/L) was associated with greater reductions in total body fat ( = 0.011), visceral adipose tissue ( = 0.025), FMI ( = 0.002) and C-reactive protein (CRP, = 0.041) but also with greater reductions in LMM ( = 0.042). : Short-term LC diet combined with prescribed exercise enhanced cardiorespiratory fitness and the cardiometabolic profile of obese individuals but was also associated with greater muscle mass loss compared to similar exercise training and standard dietary advice. The long-term effects of the LC diet should be further explored in future studies.
- Authors: Perissiou, Maria , Borkoles, Erika , Kobayashi, Kent , Polman, Remco
- Date: 2020
- Type: Text , Journal article
- Relation: Nutrients Vol. 12, no. 2 (2020), p. 482
- Full Text:
- Reviewed:
- Description: Low-carbohydrate (LC) diets are an effective method for treating obesity and reducing cardiometabolic risk. However, exposure to LC diets is associated with reductions in muscle mass and increased osteoporosis risk in obese individuals. The combination of exercise with a LC diet appears to attenuate muscle mass loss induced by LC diets alone, and to further improve cardiometabolic profile. However, evidence to date in obese individuals is limited. We assessed the effect of LC diet in combination with supervised exercise on cardiorespiratory fitness, body composition and cardiometabolic risk factors in obese individuals. Male and female participants in the experimental (EX-LC structured supervised exercise program + low-carbohydrate meals n = 33 35.3 years) and control (EX-CO structured supervised exercise program + standard dietary advice n = 31 34.2 years) conditions underwent measurements of cardiorespiratory fitness ( O peak), body fat, lean muscle mass (LMM), and cardiometabolic biomarkers before and after an 8 week intervention. : Participants in the EX-LC condition demonstrated greater improvements in O peak ( = 0.002) and fat mass index (FMI, = 0.001) compared to the EX-CO condition. Achieving a ketogenic state (β-hydroxybutyrate, βHB ≥0.3 mmol/L) was associated with greater reductions in total body fat ( = 0.011), visceral adipose tissue ( = 0.025), FMI ( = 0.002) and C-reactive protein (CRP, = 0.041) but also with greater reductions in LMM ( = 0.042). : Short-term LC diet combined with prescribed exercise enhanced cardiorespiratory fitness and the cardiometabolic profile of obese individuals but was also associated with greater muscle mass loss compared to similar exercise training and standard dietary advice. The long-term effects of the LC diet should be further explored in future studies.
The influence of an attachment-related stimulus on oxytocin reactivity in poly-drug users undergoing maintenance therapy compared to healthy controls
- Fuchshuber, Jürgen, Tatzer, Jasmin, Hiebler-Ragger, Michaela, Trinkl, Florian, Kimmerle, Andreas, Rinner, Anita, Buchheim, Anna, Schrom, Silke, Rinner, Beate, Leber, Klaus, Pieber, Thomas, Weiss, Elisabeth, Lewis, Andrew, Kapfhammer, Hans-Peter, Unterrainer, Human
- Authors: Fuchshuber, Jürgen , Tatzer, Jasmin , Hiebler-Ragger, Michaela , Trinkl, Florian , Kimmerle, Andreas , Rinner, Anita , Buchheim, Anna , Schrom, Silke , Rinner, Beate , Leber, Klaus , Pieber, Thomas , Weiss, Elisabeth , Lewis, Andrew , Kapfhammer, Hans-Peter , Unterrainer, Human
- Date: 2020
- Type: Text , Journal article
- Relation: Frontiers in Psychiatry Vol. 11, no. (2020), p. 460506
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- Description: Substance use disorders (SUDs) have been described as a dysfunctional way to compensate for deficiencies in that person's underlying attachment system. Furthermore, the neuropeptide oxytocin (OT), which is a critical component of the neurobiology of the attachment system, has been shown to effectively reduce addictive behavior and therefore has been discussed as a potential medication in SUD treatment. This study investigates variation in peripheral OT plasma levels as a function of exposure to an attachment-related stimulus in SUD patients compared to healthy controls (HCs). A total sample of 48 men, 24 inpatients in maintenance treatment who were diagnosed with poly-drug use disorder (PUD) and 24 HC, was investigated. A 15-min exposure to the Adult Attachment Projective Picture System (AAP) was used as an attachment-related stimulus and coded for attachment status. Blood samples before and after the AAP-assessment were taken and assayed for OT levels. Variation in baselines level of OT was examined in relation to the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), the Adult Attachment-Scale (AAS), and the Brief Symptom Inventory (BSI). Following the AAP stimulus controls showed no significant difference in OT levels elevation from baseline compared to the PUD group's OT levels. Furthermore, in the PUD group only OT-baseline-levels may be negatively associated with the AAS subscale "Comfort with Closeness" and "Anxiety" and lifetime substance use. Our results suggest that peripheral OT levels in poly-drug users undergoing maintenance treatment are not significantly different in responsiveness to an attachment related stimulus compared to HC. With regard to non-significant tendencies observed in this study which hint toward decreased OT-reactivity in the PUD group, further research is needed to explore this hypothesis with increased statistical power.
- Authors: Fuchshuber, Jürgen , Tatzer, Jasmin , Hiebler-Ragger, Michaela , Trinkl, Florian , Kimmerle, Andreas , Rinner, Anita , Buchheim, Anna , Schrom, Silke , Rinner, Beate , Leber, Klaus , Pieber, Thomas , Weiss, Elisabeth , Lewis, Andrew , Kapfhammer, Hans-Peter , Unterrainer, Human
- Date: 2020
- Type: Text , Journal article
- Relation: Frontiers in Psychiatry Vol. 11, no. (2020), p. 460506
- Full Text:
- Reviewed:
- Description: Substance use disorders (SUDs) have been described as a dysfunctional way to compensate for deficiencies in that person's underlying attachment system. Furthermore, the neuropeptide oxytocin (OT), which is a critical component of the neurobiology of the attachment system, has been shown to effectively reduce addictive behavior and therefore has been discussed as a potential medication in SUD treatment. This study investigates variation in peripheral OT plasma levels as a function of exposure to an attachment-related stimulus in SUD patients compared to healthy controls (HCs). A total sample of 48 men, 24 inpatients in maintenance treatment who were diagnosed with poly-drug use disorder (PUD) and 24 HC, was investigated. A 15-min exposure to the Adult Attachment Projective Picture System (AAP) was used as an attachment-related stimulus and coded for attachment status. Blood samples before and after the AAP-assessment were taken and assayed for OT levels. Variation in baselines level of OT was examined in relation to the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), the Adult Attachment-Scale (AAS), and the Brief Symptom Inventory (BSI). Following the AAP stimulus controls showed no significant difference in OT levels elevation from baseline compared to the PUD group's OT levels. Furthermore, in the PUD group only OT-baseline-levels may be negatively associated with the AAS subscale "Comfort with Closeness" and "Anxiety" and lifetime substance use. Our results suggest that peripheral OT levels in poly-drug users undergoing maintenance treatment are not significantly different in responsiveness to an attachment related stimulus compared to HC. With regard to non-significant tendencies observed in this study which hint toward decreased OT-reactivity in the PUD group, further research is needed to explore this hypothesis with increased statistical power.
The training-performance puzzle : how can the past inform future training directions?
- Authors: Gabbett, Tim
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Athletic Training Vol. 55, no. 9 (2020), p. 874-884
- Full Text:
- Reviewed:
- Description: Over the past 20 years, research on the training-load-injury relationship has grown exponentially. With the benefit of more data, our understanding of the training-performance puzzle has improved. What were we thinking 20 years ago, and how has our thinking changed over time? Although early investigators attributed overuse injuries to excessive training loads, it has become clear that rapid spikes in training load, above what an athlete is accustomed, explain (at least in part) a large proportion of injuries. In this respect, it appears that overuse injuries may arise from athletes being underprepared for the load they are about to perform. However, a question of interest to both athletic trainers (ATs) and researchers is why some athletes sustain injury at low training loads, while others can tolerate much greater training loads? A higher chronic training load and well-developed aerobic fitness and lower body strength appear to moderate the training-injury relationship and provide a protective effect against spikes in load. The training-performance puzzle is complex and dynamic-at any given time, multiple inputs to injury and performance exist. The challenge facing researchers is obtaining large enough longitudinal data sets to capture the time-varying nature of physiological and musculoskeletal capacities and training-load data to adequately inform injury-prevention efforts. The training-performance puzzle can be solved, but it will take collaboration between researchers and clinicians as well as an understanding that efficacy (ie, how training load affects performance and injury in an idealized or controlled setting) does not equate to effectiveness (ie, how training load affects performance and injury in the real-world setting, where many variables cannot be controlled). © by the National Athletic Trainers' Association, Inc www.natajournals.org
- Authors: Gabbett, Tim
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Athletic Training Vol. 55, no. 9 (2020), p. 874-884
- Full Text:
- Reviewed:
- Description: Over the past 20 years, research on the training-load-injury relationship has grown exponentially. With the benefit of more data, our understanding of the training-performance puzzle has improved. What were we thinking 20 years ago, and how has our thinking changed over time? Although early investigators attributed overuse injuries to excessive training loads, it has become clear that rapid spikes in training load, above what an athlete is accustomed, explain (at least in part) a large proportion of injuries. In this respect, it appears that overuse injuries may arise from athletes being underprepared for the load they are about to perform. However, a question of interest to both athletic trainers (ATs) and researchers is why some athletes sustain injury at low training loads, while others can tolerate much greater training loads? A higher chronic training load and well-developed aerobic fitness and lower body strength appear to moderate the training-injury relationship and provide a protective effect against spikes in load. The training-performance puzzle is complex and dynamic-at any given time, multiple inputs to injury and performance exist. The challenge facing researchers is obtaining large enough longitudinal data sets to capture the time-varying nature of physiological and musculoskeletal capacities and training-load data to adequately inform injury-prevention efforts. The training-performance puzzle can be solved, but it will take collaboration between researchers and clinicians as well as an understanding that efficacy (ie, how training load affects performance and injury in an idealized or controlled setting) does not equate to effectiveness (ie, how training load affects performance and injury in the real-world setting, where many variables cannot be controlled). © by the National Athletic Trainers' Association, Inc www.natajournals.org
Training load and recovery during a pre-olympic season in professional rhythmic gymnasts
- Debien, Paula, Miloski, Bernardo, Werneck, Francisco, Timoteo, Thiago, Ferezin, Camila, Filho, Mauricio, Gabbett, Tim
- Authors: Debien, Paula , Miloski, Bernardo , Werneck, Francisco , Timoteo, Thiago , Ferezin, Camila , Filho, Mauricio , Gabbett, Tim
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Athletic Training Vol. 55, no. 9 (2020), p. 977-983
- Full Text:
- Reviewed:
- Description: Context: Rhythmic gymnastics requires a high level of complexity and perfection of technical gestures, associated with well-developed physical and artistic capacities. The training-load and recovery profiles of rhythmic gymnasts across a season are unknown. Objective: To analyze the training load and recovery of professional rhythmic gymnasts during 1 season. Design: Cohort study. Setting: Brazilian National Training Center of Rhythmic Gymnastics and competition facilities. Patients or Other Participants: Eight gymnasts from the Brazilian national senior rhythmic gymnastics group. Main Outcome Measure(s): Session rating of perceived exertion (session-RPE) and total quality recovery (TQR) scores were collected daily for 43 weeks. We obtained the session-RPE after each session and TQR score before the first session of the day. Performances during 5 competitions were also recorded. The season was divided into 8 periods. Total weekly internal training load (wITL), training intensity, frequency, duration, recovery, and acute: chronic workload ratio were calculated for analysis. Results: The season mean wITL was 10 381 6 4894 arbitrary units, mean session-RPE score was 5.0 6 1.6, and mean TQR score was 12.8 6 1.3. The gymnasts trained an average of 8.7 6 2.9 sessions per week, with a mean duration of 219 6 36 minutes. Each competitive period showed increased wITL compared with the previous period. Training-load variables (wITL and session-RPE) and recovery were inversely correlated. Gymnasts were poorly recovered (TQR, 13) during 50.9% of the season (n ¼ 167 times), especially during competitive weeks. Spikes in load (acute: chronic workload ratio ≥ 1.5) occurred across 18.1% of the season (n ¼ 55 times). Conclusions: The training-load variables and recovery changed throughout a professional rhythmic gymnastics group season, mainly during competitive periods. The correct distribution of training load is critical to ensure that gymnasts are entering competitions in a recovered state. © by the National Athletic Trainers' Association, Inc www.natajournals.org
- Authors: Debien, Paula , Miloski, Bernardo , Werneck, Francisco , Timoteo, Thiago , Ferezin, Camila , Filho, Mauricio , Gabbett, Tim
- Date: 2020
- Type: Text , Journal article
- Relation: Journal of Athletic Training Vol. 55, no. 9 (2020), p. 977-983
- Full Text:
- Reviewed:
- Description: Context: Rhythmic gymnastics requires a high level of complexity and perfection of technical gestures, associated with well-developed physical and artistic capacities. The training-load and recovery profiles of rhythmic gymnasts across a season are unknown. Objective: To analyze the training load and recovery of professional rhythmic gymnasts during 1 season. Design: Cohort study. Setting: Brazilian National Training Center of Rhythmic Gymnastics and competition facilities. Patients or Other Participants: Eight gymnasts from the Brazilian national senior rhythmic gymnastics group. Main Outcome Measure(s): Session rating of perceived exertion (session-RPE) and total quality recovery (TQR) scores were collected daily for 43 weeks. We obtained the session-RPE after each session and TQR score before the first session of the day. Performances during 5 competitions were also recorded. The season was divided into 8 periods. Total weekly internal training load (wITL), training intensity, frequency, duration, recovery, and acute: chronic workload ratio were calculated for analysis. Results: The season mean wITL was 10 381 6 4894 arbitrary units, mean session-RPE score was 5.0 6 1.6, and mean TQR score was 12.8 6 1.3. The gymnasts trained an average of 8.7 6 2.9 sessions per week, with a mean duration of 219 6 36 minutes. Each competitive period showed increased wITL compared with the previous period. Training-load variables (wITL and session-RPE) and recovery were inversely correlated. Gymnasts were poorly recovered (TQR, 13) during 50.9% of the season (n ¼ 167 times), especially during competitive weeks. Spikes in load (acute: chronic workload ratio ≥ 1.5) occurred across 18.1% of the season (n ¼ 55 times). Conclusions: The training-load variables and recovery changed throughout a professional rhythmic gymnastics group season, mainly during competitive periods. The correct distribution of training load is critical to ensure that gymnasts are entering competitions in a recovered state. © by the National Athletic Trainers' Association, Inc www.natajournals.org
A 90 minute soccer match induces eccentric hamstring muscles fatigue
- Kakavas, Georgios, Malliaropoulos, Nikos, Gabbett, Tim, Mitrotasios, Michalis, Van Dyk, Nicol, Bikos, Georgios, Maffulli, Nicola
- Authors: Kakavas, Georgios , Malliaropoulos, Nikos , Gabbett, Tim , Mitrotasios, Michalis , Van Dyk, Nicol , Bikos, Georgios , Maffulli, Nicola
- Date: 2021
- Type: Text , Journal article
- Relation: Muscles, Ligaments and Tendons Journal Vol. 11, no. 2 (2021), p. 318-323
- Full Text:
- Reviewed:
- Description: Background/Purpose of the study. Hamstring injuries are the most prevalent muscle injuries in both amateur and professional soccer (football) players. Eccentric strength deficits and muscle strength imbalances have been associated with an increased risk of muscle injuries. The current study is a non-randomised observational study investigating whether fatigue significantly reduces peak eccentric strength of the hamstring muscle group. Methods. Twenty-two right leg dominant professional football players participated in this study. None were injured or were rehabilitating from an injury at the time of testing. The eccentric strength of the hamstring muscles was determined using the Nordic exercise on a Norbord device prior to a 90 minute soccer match and after its end. Results. There was a significant decrease in eccentric strength at the end of the match (before the match: M = 306.91, SD = 59.26; after the match: Mean = 277.77 ± SD = 60.35 p =.000, Cohen’s d =.50). The imbalance in eccentric hamstring muscle strength between dominant and non-dominant limb before the match remained unchanged after its end. Conclusions. A professional football match significantly impacts on the ability of players to produce high speed eccentric strength in the hamstring muscle groups. Resistance to fatigue and eccentric strength, particularly at high speeds, are considerable factors in conditioning of professional soccer players. Eccentric muscle strength fatigue of the hamstring muscle group after a 90 min soccer match may provide a possible explanation for the greater risk of hamstring injuries under fatigue conditions. © 2021, CIC Edizioni Internazionali s.r.l.. All rights reserved.
- Authors: Kakavas, Georgios , Malliaropoulos, Nikos , Gabbett, Tim , Mitrotasios, Michalis , Van Dyk, Nicol , Bikos, Georgios , Maffulli, Nicola
- Date: 2021
- Type: Text , Journal article
- Relation: Muscles, Ligaments and Tendons Journal Vol. 11, no. 2 (2021), p. 318-323
- Full Text:
- Reviewed:
- Description: Background/Purpose of the study. Hamstring injuries are the most prevalent muscle injuries in both amateur and professional soccer (football) players. Eccentric strength deficits and muscle strength imbalances have been associated with an increased risk of muscle injuries. The current study is a non-randomised observational study investigating whether fatigue significantly reduces peak eccentric strength of the hamstring muscle group. Methods. Twenty-two right leg dominant professional football players participated in this study. None were injured or were rehabilitating from an injury at the time of testing. The eccentric strength of the hamstring muscles was determined using the Nordic exercise on a Norbord device prior to a 90 minute soccer match and after its end. Results. There was a significant decrease in eccentric strength at the end of the match (before the match: M = 306.91, SD = 59.26; after the match: Mean = 277.77 ± SD = 60.35 p =.000, Cohen’s d =.50). The imbalance in eccentric hamstring muscle strength between dominant and non-dominant limb before the match remained unchanged after its end. Conclusions. A professional football match significantly impacts on the ability of players to produce high speed eccentric strength in the hamstring muscle groups. Resistance to fatigue and eccentric strength, particularly at high speeds, are considerable factors in conditioning of professional soccer players. Eccentric muscle strength fatigue of the hamstring muscle group after a 90 min soccer match may provide a possible explanation for the greater risk of hamstring injuries under fatigue conditions. © 2021, CIC Edizioni Internazionali s.r.l.. All rights reserved.
A qualitative exploration of the impact of knowledge and perceptions about hypertension in medication adherence in Middle Eastern refugees and migrants
- Shahin, Wejdan, Kennedy, Gerard, Stupans, Ieva
- Authors: Shahin, Wejdan , Kennedy, Gerard , Stupans, Ieva
- Date: 2021
- Type: Text , Journal article
- Relation: Exploratory Research in Clinical and Social Pharmacy Vol. 3, no. (2021), p. 100038-100038
- Full Text:
- Reviewed:
- Description: Knowledge and perceptions about chronic disease and medications play a crucial role in determining long-term treatment adherence to diseases such as hypertension. Exploring in depth the barriers and enablers to medication adherence in specific population subgroups such as Middle Eastern refugees and migrants in Australia is important. This may provide a better understanding of each of these groups' beliefs and knowledge and suggest strategies and interventions to improve medication adherence. This study aimed to understand Middle Eastern refugees' and migrants' experiences, perceptions, and knowledge about hypertension and to explore factors affecting medication adherence. In this study 15 participants who identified themselves as Middle Eastern refugees and migrants in Australia and had been diagnosed with hypertension were interviewed (migrants = 5, refugees =10) using semi-structured interviews. Recorded interviews were analysed using a thematic analysis framework and the findings were reported according to consolidated criteria for reporting qualitative research. Three key themes emerged from the interview analysis: (1) dealing with the illness in terms of understanding the symptoms and causes, self-managing of high blood pressure, and coping and acquaintance with the illness (2) beliefs, practices around medication adherence and the barriers and facilitators to taking medications regularly and (3) healthcare encounters represented by participants trust in healthcare providers. Differences were found between refugees and migrants relating to the understanding, control, and coping with hypertension, beliefs about medications, trust of healthcare providers, and taking medications as prescribed. There were also differences in the social context of the two groups. Understanding the factors that prevent adherence to hypertension in Middle Eastern refugees addressed the gap in the literature regarding refugees' beliefs and medication adherence. Future studies are recommended to assess the improvement in medication adherence in refugees by modifying their beliefs, attitude, and knowledge about medications and illness. In addition, healthcare providers should consider the differences between Middle Eastern refugees and migrants when providing the health advice that targets each of these population independently to ultimately improve their overall health and adherence to medications. Erratum: The publisher regrets that the section below was accidentally anonymized in the original published version of this article: “Ethical approval was obtained from (redacted) 60–19/22299”. This section should read: “Ethical approval was obtained from RMIT University Ethics Committee 60–19/22299”. The publisher would like to apologise for any inconvenience caused.
- Authors: Shahin, Wejdan , Kennedy, Gerard , Stupans, Ieva
- Date: 2021
- Type: Text , Journal article
- Relation: Exploratory Research in Clinical and Social Pharmacy Vol. 3, no. (2021), p. 100038-100038
- Full Text:
- Reviewed:
- Description: Knowledge and perceptions about chronic disease and medications play a crucial role in determining long-term treatment adherence to diseases such as hypertension. Exploring in depth the barriers and enablers to medication adherence in specific population subgroups such as Middle Eastern refugees and migrants in Australia is important. This may provide a better understanding of each of these groups' beliefs and knowledge and suggest strategies and interventions to improve medication adherence. This study aimed to understand Middle Eastern refugees' and migrants' experiences, perceptions, and knowledge about hypertension and to explore factors affecting medication adherence. In this study 15 participants who identified themselves as Middle Eastern refugees and migrants in Australia and had been diagnosed with hypertension were interviewed (migrants = 5, refugees =10) using semi-structured interviews. Recorded interviews were analysed using a thematic analysis framework and the findings were reported according to consolidated criteria for reporting qualitative research. Three key themes emerged from the interview analysis: (1) dealing with the illness in terms of understanding the symptoms and causes, self-managing of high blood pressure, and coping and acquaintance with the illness (2) beliefs, practices around medication adherence and the barriers and facilitators to taking medications regularly and (3) healthcare encounters represented by participants trust in healthcare providers. Differences were found between refugees and migrants relating to the understanding, control, and coping with hypertension, beliefs about medications, trust of healthcare providers, and taking medications as prescribed. There were also differences in the social context of the two groups. Understanding the factors that prevent adherence to hypertension in Middle Eastern refugees addressed the gap in the literature regarding refugees' beliefs and medication adherence. Future studies are recommended to assess the improvement in medication adherence in refugees by modifying their beliefs, attitude, and knowledge about medications and illness. In addition, healthcare providers should consider the differences between Middle Eastern refugees and migrants when providing the health advice that targets each of these population independently to ultimately improve their overall health and adherence to medications. Erratum: The publisher regrets that the section below was accidentally anonymized in the original published version of this article: “Ethical approval was obtained from (redacted) 60–19/22299”. This section should read: “Ethical approval was obtained from RMIT University Ethics Committee 60–19/22299”. The publisher would like to apologise for any inconvenience caused.
Deficiency of MicroRNA-181a results in transcriptome-wide cell-specific changes in the kidney and increases blood pressure
- Paterson, Madeleine, Jackson, Kristy, Dona, Malathi, Farrugia, Gabriella, Visniauskas, Bruna, Watson, Anna, Johnson, Chad, Prieto, Minolfa, Evans, Roger, Charchar, Fadi, Pinto, Alexander, Marques, Francine, Head, Geoffrey
- Authors: Paterson, Madeleine , Jackson, Kristy , Dona, Malathi , Farrugia, Gabriella , Visniauskas, Bruna , Watson, Anna , Johnson, Chad , Prieto, Minolfa , Evans, Roger , Charchar, Fadi , Pinto, Alexander , Marques, Francine , Head, Geoffrey
- Date: 2021
- Type: Text , Journal article
- Relation: Hypertension Vol. 78, no. 5 (Nov 2021), p. 1322-1334
- Full Text:
- Reviewed:
- Description: MicroRNA miR-181a is downregulated in the kidneys of hypertensive patients and hypertensive mice. In vitro, miR-181a is a posttranslational inhibitor of renin expression, but pleiotropic mechanisms by which miR-181a may influence blood pressure (BP) are unknown. Here, we determined whether deletion of miR-181a/b-1 in vivo changes BP and the molecular mechanisms involved at the single-cell level. We developed a KO (knockout) mouse model lacking miR-181a/b-1 genes using CRISPR/Cas9 technology. Radiotelemetry probes were implanted in 12-week-old C57BL/6J WT (wild type) and miR-181a/b-1 KO mice. Systolic and diastolic BP were 4- to 5-mm Hg higher in KO compared with WT mice over 24 hours (P<0.01). Compared with WT mice, renal renin was higher in the juxtaglomerular cells of KO mice. BP was similar in WT mice on a high- (3.1%) versus low- (0.3%) sodium diet (+0.4 +/- 0.8 mm Hg), but KO mice showed salt sensitivity (+3.3 +/- 0.8 mm Hg; P<0.001). Since microRNAs can target several mRNAs simultaneously, we performed single-nuclei RNA sequencing in 6699 renal cells. We identified 12 distinct types of renal cells, all of which had genes that were dysregulated. This included genes involved in renal fibrosis and inflammation such as Stat4, Col4a1, Cd81, Flt3l, Cxcl16, and Smad4. We observed upregulation of pathways related to the immune system, inflammatory response, reactive oxygen species, and nerve development, consistent with higher tyrosine hydroxylase in the kidney. In conclusion, downregulation of the miR-181a gene led to increased BP and salt sensitivity in mice. This is likely due to an increase in renin expression in juxtaglomerular cells, as well as microRNA-driven pleiotropic effects impacting renal pathways associated with hypertension.
- Authors: Paterson, Madeleine , Jackson, Kristy , Dona, Malathi , Farrugia, Gabriella , Visniauskas, Bruna , Watson, Anna , Johnson, Chad , Prieto, Minolfa , Evans, Roger , Charchar, Fadi , Pinto, Alexander , Marques, Francine , Head, Geoffrey
- Date: 2021
- Type: Text , Journal article
- Relation: Hypertension Vol. 78, no. 5 (Nov 2021), p. 1322-1334
- Full Text:
- Reviewed:
- Description: MicroRNA miR-181a is downregulated in the kidneys of hypertensive patients and hypertensive mice. In vitro, miR-181a is a posttranslational inhibitor of renin expression, but pleiotropic mechanisms by which miR-181a may influence blood pressure (BP) are unknown. Here, we determined whether deletion of miR-181a/b-1 in vivo changes BP and the molecular mechanisms involved at the single-cell level. We developed a KO (knockout) mouse model lacking miR-181a/b-1 genes using CRISPR/Cas9 technology. Radiotelemetry probes were implanted in 12-week-old C57BL/6J WT (wild type) and miR-181a/b-1 KO mice. Systolic and diastolic BP were 4- to 5-mm Hg higher in KO compared with WT mice over 24 hours (P<0.01). Compared with WT mice, renal renin was higher in the juxtaglomerular cells of KO mice. BP was similar in WT mice on a high- (3.1%) versus low- (0.3%) sodium diet (+0.4 +/- 0.8 mm Hg), but KO mice showed salt sensitivity (+3.3 +/- 0.8 mm Hg; P<0.001). Since microRNAs can target several mRNAs simultaneously, we performed single-nuclei RNA sequencing in 6699 renal cells. We identified 12 distinct types of renal cells, all of which had genes that were dysregulated. This included genes involved in renal fibrosis and inflammation such as Stat4, Col4a1, Cd81, Flt3l, Cxcl16, and Smad4. We observed upregulation of pathways related to the immune system, inflammatory response, reactive oxygen species, and nerve development, consistent with higher tyrosine hydroxylase in the kidney. In conclusion, downregulation of the miR-181a gene led to increased BP and salt sensitivity in mice. This is likely due to an increase in renin expression in juxtaglomerular cells, as well as microRNA-driven pleiotropic effects impacting renal pathways associated with hypertension.
Factors influencing creatine kinase response in youth national team soccer players
- Schuth, Gabor, Szigeti, Gyorgy, Dobreff, Gergely, Revisnyei, Peter, Pasic, Alija, Toka, Laszlo, Gabbett, Tim, Pavlik, Gabor
- Authors: Schuth, Gabor , Szigeti, Gyorgy , Dobreff, Gergely , Revisnyei, Peter , Pasic, Alija , Toka, Laszlo , Gabbett, Tim , Pavlik, Gabor
- Date: 2021
- Type: Text , Journal article
- Relation: Sports Health Vol. 13, no. 4 (2021), p. 332-340
- Full Text:
- Reviewed:
- Description: Background: Previous studies have examined the relationship between external training load and creatine kinase (CK) response after soccer matches in adults. This study aimed to build training- and match-specific CK prediction models for elite youth national team soccer players. Hypothesis: Training and match load will have different effects on the CK response of elite youth soccer players, and there will be position-specific differences in the most influential external and internal load parameters on the CK response. Study Design: Prospective cohort study. Level of Evidence: Level 4. Methods: Forty-one U16-U17 youth national team soccer players were measured over an 18-month period. Training and match load were monitored with global positioning system devices. Individual CK values were measured from whole blood every morning in training camps. The dataset consisted of 1563 data points. Clustered prediction models were used to examine the relationship between external/internal load and consecutive CK changes. Clusters were built based on the playing position and activity type. The performance of the linear regression models was described by the R2 and the root-mean-square error (RMSE, U/L for CK values). Results: The prediction models fitted similarly during games and training sessions (R2 = 0.38-0.88 vs 0.6-0.77), but there were large differences based on playing positions. In contrast, the accuracy of the models was better during training sessions (RMSE = 81-135 vs 79-209 U/L). Position-specific differences were also found in the external and internal load parameters, which best explained the CK changes. Conclusion: The relationship between external/internal load parameters and CK changes are position specific and might depend on the type of session (training or match). Morning CK values also contributed to the next day’s CK values. Clinical Relevance: The relationship between position-specific external/internal load and CK changes can be used to individualize postmatch recovery strategies and weekly training periodization with a view to optimize match performance. © 2021 The Author(s).
- Authors: Schuth, Gabor , Szigeti, Gyorgy , Dobreff, Gergely , Revisnyei, Peter , Pasic, Alija , Toka, Laszlo , Gabbett, Tim , Pavlik, Gabor
- Date: 2021
- Type: Text , Journal article
- Relation: Sports Health Vol. 13, no. 4 (2021), p. 332-340
- Full Text:
- Reviewed:
- Description: Background: Previous studies have examined the relationship between external training load and creatine kinase (CK) response after soccer matches in adults. This study aimed to build training- and match-specific CK prediction models for elite youth national team soccer players. Hypothesis: Training and match load will have different effects on the CK response of elite youth soccer players, and there will be position-specific differences in the most influential external and internal load parameters on the CK response. Study Design: Prospective cohort study. Level of Evidence: Level 4. Methods: Forty-one U16-U17 youth national team soccer players were measured over an 18-month period. Training and match load were monitored with global positioning system devices. Individual CK values were measured from whole blood every morning in training camps. The dataset consisted of 1563 data points. Clustered prediction models were used to examine the relationship between external/internal load and consecutive CK changes. Clusters were built based on the playing position and activity type. The performance of the linear regression models was described by the R2 and the root-mean-square error (RMSE, U/L for CK values). Results: The prediction models fitted similarly during games and training sessions (R2 = 0.38-0.88 vs 0.6-0.77), but there were large differences based on playing positions. In contrast, the accuracy of the models was better during training sessions (RMSE = 81-135 vs 79-209 U/L). Position-specific differences were also found in the external and internal load parameters, which best explained the CK changes. Conclusion: The relationship between external/internal load parameters and CK changes are position specific and might depend on the type of session (training or match). Morning CK values also contributed to the next day’s CK values. Clinical Relevance: The relationship between position-specific external/internal load and CK changes can be used to individualize postmatch recovery strategies and weekly training periodization with a view to optimize match performance. © 2021 The Author(s).
Infographic consensus recommendations on the classification, definition and diagnostic criteria of hip-related pain in young and middle-aged active adults from the International Hip-related Pain Research Network, Zurich 2018
- Reiman, Michael, Agricola, Rintje, Kemp, Joanne, Heerey, Joshua, Weir, Adam, Van Klij, Pim, Kassarjian, Ara, Mosler, Andrea, Ageberg, Eva, Hölmich, Perj, WArholm, Kristian, Griffin, Damian, Mayes, Suec, Khan, Karim, Crossley, Kay, Bizzini, Mario, Bloom, Nancy, Casartelli, Nicola, Diamond, Laura, Di Stasi, Stephanieu, Drew, Michael, Friedman, Daniel, Freke, Matthew, Glyn-Jones, Sionz, Gojanovic, Borisaa, Harris-Hayes, Marcie, Hunt, Michael, Impellizzeri, Franco, Ishøi, Lasseae;, Jones, Denise
- Authors: Reiman, Michael , Agricola, Rintje , Kemp, Joanne , Heerey, Joshua , Weir, Adam , Van Klij, Pim , Kassarjian, Ara , Mosler, Andrea , Ageberg, Eva , Hölmich, Perj , WArholm, Kristian , Griffin, Damian , Mayes, Suec , Khan, Karim , Crossley, Kay , Bizzini, Mario , Bloom, Nancy , Casartelli, Nicola , Diamond, Laura , Di Stasi, Stephanieu , Drew, Michael , Friedman, Daniel , Freke, Matthew , Glyn-Jones, Sionz , Gojanovic, Borisaa , Harris-Hayes, Marcie , Hunt, Michael , Impellizzeri, Franco , Ishøi, Lasseae; , Jones, Denise
- Date: 2021
- Type: Text , Journal article , Review
- Relation: British Journal of Sports Medicine Vol. 55, no. 2 (2021), p. 115-117
- Full Text:
- Reviewed:
- Description: **Please note that there are multiple authors for this article therefore only the name of the first 30 including Federation University Australia affiliate “Michael Drew" is provided in this record**
- Authors: Reiman, Michael , Agricola, Rintje , Kemp, Joanne , Heerey, Joshua , Weir, Adam , Van Klij, Pim , Kassarjian, Ara , Mosler, Andrea , Ageberg, Eva , Hölmich, Perj , WArholm, Kristian , Griffin, Damian , Mayes, Suec , Khan, Karim , Crossley, Kay , Bizzini, Mario , Bloom, Nancy , Casartelli, Nicola , Diamond, Laura , Di Stasi, Stephanieu , Drew, Michael , Friedman, Daniel , Freke, Matthew , Glyn-Jones, Sionz , Gojanovic, Borisaa , Harris-Hayes, Marcie , Hunt, Michael , Impellizzeri, Franco , Ishøi, Lasseae; , Jones, Denise
- Date: 2021
- Type: Text , Journal article , Review
- Relation: British Journal of Sports Medicine Vol. 55, no. 2 (2021), p. 115-117
- Full Text:
- Reviewed:
- Description: **Please note that there are multiple authors for this article therefore only the name of the first 30 including Federation University Australia affiliate “Michael Drew" is provided in this record**
Match high-speed running distances are often suppressed after return from hamstring strain injury in professional footballers
- Whiteley, Rodney, Massey, Andrew, Gabbett, Tim, Blanch, Peter, Cameron, Matthew, Conlan, Greta, Ford, Matthew, Williams, Morgan
- Authors: Whiteley, Rodney , Massey, Andrew , Gabbett, Tim , Blanch, Peter , Cameron, Matthew , Conlan, Greta , Ford, Matthew , Williams, Morgan
- Date: 2021
- Type: Text , Journal article
- Relation: Sports Health Vol. 13, no. 3 (2021), p. 290-295
- Full Text:
- Reviewed:
- Description: Background: High-speed running is commonly implicated in the genesis of hamstring injury. The success of hamstring injury management is typically quantified by the duration of time loss or reinjury rate. These metrics do not consider any loss in performance after returning to play from hamstring injury. It is not known to what extent high-speed running is altered on return to play after such injury. Hypothesis: Match high-speed running distance will change after returning from hamstring injury. Study Design: Non-randomized cohort. Level of Evidence: Level 3. Methods: Match high-speed running distance in highest level professional football (soccer, Rugby League, Rugby Union, and Australian Rules) were examined for a minimum of 5 games prior and subsequent to hamstring strain injury for individual differences using a linear regression models approach. A total of 22 injuries in 15 players were available for analysis. Results: Preinjury cumulative high-speed running distances were strongly correlated for each individual (r2 = 0.92-1.0 P < 0.0001). Pre- and postinjury high-speed running data were available for a median of 15 matches (range, 6-15). Variance from the preinjury high-speed running distance was significantly less (P = 0.0005) than the post injury values suggesting a suppression of high-speed running distance after returning from injury. On return to play, 7 of the 15 players showed a sustained absolute reduction in preinjury high-speed running distance, 7 showed no change, and 1 player (only) showed an increase. Analysis of subsequent (second and third injury) return to play showed no differences to return from the index injury. Conclusion: Return to play was not associated with return to high-speed running performance for nearly half of the players examined, although the same number showed no difference. Persisting deficits in match high-speed running may exist for many players after hamstring strain injury. Clinical Relevance: Returning to play does not mean returning to (high-speed running) performance for nearly half of the high-level professional football players examined in this study. This suggests that successful return to play metrics should be expanded from simple time taken and recurrence to include performance.
- Authors: Whiteley, Rodney , Massey, Andrew , Gabbett, Tim , Blanch, Peter , Cameron, Matthew , Conlan, Greta , Ford, Matthew , Williams, Morgan
- Date: 2021
- Type: Text , Journal article
- Relation: Sports Health Vol. 13, no. 3 (2021), p. 290-295
- Full Text:
- Reviewed:
- Description: Background: High-speed running is commonly implicated in the genesis of hamstring injury. The success of hamstring injury management is typically quantified by the duration of time loss or reinjury rate. These metrics do not consider any loss in performance after returning to play from hamstring injury. It is not known to what extent high-speed running is altered on return to play after such injury. Hypothesis: Match high-speed running distance will change after returning from hamstring injury. Study Design: Non-randomized cohort. Level of Evidence: Level 3. Methods: Match high-speed running distance in highest level professional football (soccer, Rugby League, Rugby Union, and Australian Rules) were examined for a minimum of 5 games prior and subsequent to hamstring strain injury for individual differences using a linear regression models approach. A total of 22 injuries in 15 players were available for analysis. Results: Preinjury cumulative high-speed running distances were strongly correlated for each individual (r2 = 0.92-1.0 P < 0.0001). Pre- and postinjury high-speed running data were available for a median of 15 matches (range, 6-15). Variance from the preinjury high-speed running distance was significantly less (P = 0.0005) than the post injury values suggesting a suppression of high-speed running distance after returning from injury. On return to play, 7 of the 15 players showed a sustained absolute reduction in preinjury high-speed running distance, 7 showed no change, and 1 player (only) showed an increase. Analysis of subsequent (second and third injury) return to play showed no differences to return from the index injury. Conclusion: Return to play was not associated with return to high-speed running performance for nearly half of the players examined, although the same number showed no difference. Persisting deficits in match high-speed running may exist for many players after hamstring strain injury. Clinical Relevance: Returning to play does not mean returning to (high-speed running) performance for nearly half of the high-level professional football players examined in this study. This suggests that successful return to play metrics should be expanded from simple time taken and recurrence to include performance.
Match-play running demands and technical performance among elite gaelic footballers : does divisional status count?
- McGahan, Jason, Mangan, Shane, Collins, Kieran, Burns, Con, Gabbett, Tim, O'Neill, Cian
- Authors: McGahan, Jason , Mangan, Shane , Collins, Kieran , Burns, Con , Gabbett, Tim , O'Neill, Cian
- Date: 2021
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 35, no. 1 (2021), p. 169-175
- Full Text:
- Reviewed:
- Description: The aim of the current study was to compare positional differences in running demands and technical performance variables among elite Gaelic football teams from separate divisions. Data were obtained from a division 1 (26.7 ± 2.9 years, 179.2 ± 21.3 cm, 89.9 ± 21.2 kg) and a division 3 (25.7 ± 3.5 years, 183.0 ± 4.7 cm, 84.4 ± 6.5 kg) team. Match-play running variables were collected using 4-Hz global positioning system (GPS) units (VX Sport; Visuallex Sport, Lower Hutt, New Zealand) (Match data sets; division 1: n = 107, division 3: n = 97). Selected variables assessed were high-speed running distance (HSR) (
- Authors: McGahan, Jason , Mangan, Shane , Collins, Kieran , Burns, Con , Gabbett, Tim , O'Neill, Cian
- Date: 2021
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 35, no. 1 (2021), p. 169-175
- Full Text:
- Reviewed:
- Description: The aim of the current study was to compare positional differences in running demands and technical performance variables among elite Gaelic football teams from separate divisions. Data were obtained from a division 1 (26.7 ± 2.9 years, 179.2 ± 21.3 cm, 89.9 ± 21.2 kg) and a division 3 (25.7 ± 3.5 years, 183.0 ± 4.7 cm, 84.4 ± 6.5 kg) team. Match-play running variables were collected using 4-Hz global positioning system (GPS) units (VX Sport; Visuallex Sport, Lower Hutt, New Zealand) (Match data sets; division 1: n = 107, division 3: n = 97). Selected variables assessed were high-speed running distance (HSR) (
Medical parasitology taxonomy update, January 2018 to May 2020
- Mathison, Blaine, Bradbury, Richard, Pritt, Bobbi
- Authors: Mathison, Blaine , Bradbury, Richard , Pritt, Bobbi
- Date: 2021
- Type: Text , Journal article , Review
- Relation: Journal of Clinical Microbiology Vol. 59, no. 2 (2021), p.
- Full Text:
- Reviewed:
- Description: The taxonomy of parasites of medical and public health importance is rapidly evolving. This minireview provides an update of taxonomic revisions and additions in the field of medical parasitology from January 2018 to May 2020. Several established human parasites have been reassigned to different genera over the past 2 years, while a number of novel parasites of humans have been identified. A comprehensive summary of these changes is provided here, and Taenia suihominis is proposed as a replacement name for Taenia asiaticus Eom et al., which is a homonym of Taenia asiatica von Linstow. © 2021 American Society for Microbiology. All rights reserved. Erratum: Medical parasitology taxonomy update, January 2018 to May 2020 (Journal of Clinical Microbiology (2021) 59:2 (e01308-20) DOI: https://doi.org/10.1128/JCM.01308-20
- Authors: Mathison, Blaine , Bradbury, Richard , Pritt, Bobbi
- Date: 2021
- Type: Text , Journal article , Review
- Relation: Journal of Clinical Microbiology Vol. 59, no. 2 (2021), p.
- Full Text:
- Reviewed:
- Description: The taxonomy of parasites of medical and public health importance is rapidly evolving. This minireview provides an update of taxonomic revisions and additions in the field of medical parasitology from January 2018 to May 2020. Several established human parasites have been reassigned to different genera over the past 2 years, while a number of novel parasites of humans have been identified. A comprehensive summary of these changes is provided here, and Taenia suihominis is proposed as a replacement name for Taenia asiaticus Eom et al., which is a homonym of Taenia asiatica von Linstow. © 2021 American Society for Microbiology. All rights reserved. Erratum: Medical parasitology taxonomy update, January 2018 to May 2020 (Journal of Clinical Microbiology (2021) 59:2 (e01308-20) DOI: https://doi.org/10.1128/JCM.01308-20
Self-efficacy, grit and perceptions of rural employment : what changes occur after graduation?
- Terry, Daniel, Peck, Blake, Baker, Ed
- Authors: Terry, Daniel , Peck, Blake , Baker, Ed
- Date: 2021
- Type: Text , Journal article
- Relation: Online journal of rural nursing and health care Vol. 21, no. 2 (2021), p. 44-68
- Full Text:
- Reviewed:
- Description: Purpose: General self-efficacy, occupational self-efficacy, and grit have a correlation with academic and practical success amongst nursing students. The role of these same characteristics during the first 18-24 months following the transition from student to nurse is poorly understood. In addition, when a nursing graduate begins to consider a career in a rural area is also remains unclear. This study sought to understand the change, if any, in general self-efficacy, occupational self-efficacy, grit, and rural employment importance that occurred during this transition period. Sample: Nurses after graduating from a three-year Bachelor of Nursing degree (n=28). Method: A follow-up study of a larger longitudinal mixed-methods cohort design used a survey to examine general self-efficacy, occupational self-efficacy, grit, and rural employment importance among novice nurses. Participants had agreed when completing the initial study as students to participate in a follow-up study 18-24-months after graduating. Findings: Occupational self-efficacy increased as the cohort transitioned from student to professional nurse, while grit was remarkably lower between final year students and novice nurses. No change in earlier measures of general self-efficacy or importance placed on rural careers were detected. Conclusions: Following graduation, new clinicians are focused on building professional identity and the development of foundational skills for practice. Clinical agencies have an opportunity to shift the balance between autonomy and support in order to harness these key characteristics in an effort to improve the longevity and progression of nursing graduates within the nursing profession.
- Authors: Terry, Daniel , Peck, Blake , Baker, Ed
- Date: 2021
- Type: Text , Journal article
- Relation: Online journal of rural nursing and health care Vol. 21, no. 2 (2021), p. 44-68
- Full Text:
- Reviewed:
- Description: Purpose: General self-efficacy, occupational self-efficacy, and grit have a correlation with academic and practical success amongst nursing students. The role of these same characteristics during the first 18-24 months following the transition from student to nurse is poorly understood. In addition, when a nursing graduate begins to consider a career in a rural area is also remains unclear. This study sought to understand the change, if any, in general self-efficacy, occupational self-efficacy, grit, and rural employment importance that occurred during this transition period. Sample: Nurses after graduating from a three-year Bachelor of Nursing degree (n=28). Method: A follow-up study of a larger longitudinal mixed-methods cohort design used a survey to examine general self-efficacy, occupational self-efficacy, grit, and rural employment importance among novice nurses. Participants had agreed when completing the initial study as students to participate in a follow-up study 18-24-months after graduating. Findings: Occupational self-efficacy increased as the cohort transitioned from student to professional nurse, while grit was remarkably lower between final year students and novice nurses. No change in earlier measures of general self-efficacy or importance placed on rural careers were detected. Conclusions: Following graduation, new clinicians are focused on building professional identity and the development of foundational skills for practice. Clinical agencies have an opportunity to shift the balance between autonomy and support in order to harness these key characteristics in an effort to improve the longevity and progression of nursing graduates within the nursing profession.
The occurrence of different vertical jump types in basketball competition and their relationship with lower-body speed-strength qualities
- Talpey, Scott, Smyth, Andrew, O'Grady, Mathew, Morrison, Matthew, Young, Warren
- Authors: Talpey, Scott , Smyth, Andrew , O'Grady, Mathew , Morrison, Matthew , Young, Warren
- Date: 2021
- Type: Text , Journal article
- Relation: International Journal of Strength and Conditioning Vol. 1, no. 1 (2021), p.
- Full Text:
- Reviewed:
- Description: Jumps occur frequently in basketball and can be executed from a single-leg take-off following a run-up or bilaterally from a standing start. Understanding the type of jumps performed in competition and how different muscular qualities influence their performance, informs training prescription. Firstly, to quantify the occurrence of different jump types performed in competition an analysis of 15 semi-professional basketball games was undertaken. Secondly, to understand the influence of muscular qualities on performance of different jump types, Semi-professional male basketball players (N=17) performed jump tests standing vertical jump, running vertical jumps with a double leg take-off (RVJ2) and a single leg take-off (RVJ1) and tests of lower-body speed-strength reactive strength index (RSI) from a drop jump, counter movement jump (CMJ) and squat jump. A stationary approach was employed for 69%, a running approach for 26% and a one-step approach for 5%. RVJ1 displayed non-significant (P=0.07) moderate correlation with jump height attained from the CMJ (r=0.439) and a very large (r =.806) significant (P<0.01) correlation with RSI. Most jumps were executed from a stationary start with a bilateral take-off while a run-up occurred prior to a substantial proportion of jumps. Jumps with a single-leg take-off from a run-up strongly correlate with RSI.
- Authors: Talpey, Scott , Smyth, Andrew , O'Grady, Mathew , Morrison, Matthew , Young, Warren
- Date: 2021
- Type: Text , Journal article
- Relation: International Journal of Strength and Conditioning Vol. 1, no. 1 (2021), p.
- Full Text:
- Reviewed:
- Description: Jumps occur frequently in basketball and can be executed from a single-leg take-off following a run-up or bilaterally from a standing start. Understanding the type of jumps performed in competition and how different muscular qualities influence their performance, informs training prescription. Firstly, to quantify the occurrence of different jump types performed in competition an analysis of 15 semi-professional basketball games was undertaken. Secondly, to understand the influence of muscular qualities on performance of different jump types, Semi-professional male basketball players (N=17) performed jump tests standing vertical jump, running vertical jumps with a double leg take-off (RVJ2) and a single leg take-off (RVJ1) and tests of lower-body speed-strength reactive strength index (RSI) from a drop jump, counter movement jump (CMJ) and squat jump. A stationary approach was employed for 69%, a running approach for 26% and a one-step approach for 5%. RVJ1 displayed non-significant (P=0.07) moderate correlation with jump height attained from the CMJ (r=0.439) and a very large (r =.806) significant (P<0.01) correlation with RSI. Most jumps were executed from a stationary start with a bilateral take-off while a run-up occurred prior to a substantial proportion of jumps. Jumps with a single-leg take-off from a run-up strongly correlate with RSI.