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.
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
- Full Text:
- Reviewed:
- 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
- Full Text:
- Reviewed:
- 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
- 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.
- 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
- 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.
- 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
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
- Full Text:
- Reviewed:
- 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
- Full Text:
- Reviewed:
- 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
- Full Text:
- Reviewed:
- 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
- Full Text:
- Reviewed:
- 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.
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
- Full Text:
- Reviewed:
- 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
- Full Text:
- Reviewed:
- 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.
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
- 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.
- 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
- Full Text:
- Reviewed:
- 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:
- Reviewed:
- 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.