The effect of including a series of isometric conditioning contractions to the rowing warm-up on 1,000-m rowing ergometer time trial performance
- Authors: Feros, Simon , Young, Warren , Rice, Anthony , Talpey, Scott
- Date: 2012
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 26, no. 12 (2012), p. 3326-3334
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- Description: The effect of including a series of isometric conditioning contractions to the rowing warm-up on 1,000-m rowing ergometer time trial performance. J Strength Cond Res 26(12): 3326-3334, 2012- Rowing requires strength, power, and strength-endurance for optimal performance. A rowing-based warm-up could be enhanced by exploiting the postactivation potentiation (PAP) phenomenon, acutely enhancing power output at the beginning of a race where it is needed most. Minimal research has investigated the effects of PAP on events of longer duration (i.e. 1,000-m rowing). The purpose of this research was to investigate the effects of PAP on 1,000-m rowing ergometer performance through the use of 2 different warm-up procedures: (a) a rowing warm-up combined with a series of isometric conditioning contractions, known as the potentiated warm-up (PW), and (b) a rowing warm-up only (NW). The isometric conditioning contractions in the PW were performed by "pulling" an immovable handle on the rowing ergometer, consisting of 5 sets of 5 seconds (2 seconds at submaximal intensity, and 3 seconds at maximal intensity), with a 15-second recovery between sets. The 1,000-m rowing ergometer time trial was performed after each warm-up condition, whereby mean power output, mean stroke rate, and split time were assessed every 100 m. Ten Australian national level rowers served as the subjects and performed both conditions in a counterbalanced order on separate days. The PW reduced 1,000-m time by 0.8% (p > 0.05). The PW improved mean power output by 6.6% (p < 0.01) and mean stroke rate by 5.2% (p < 0.01) over the first 500 m; resulting in a reduction of 500-m time by 1.9% (p < 0.01), compared with the NW. It appears that the inclusion of isometric conditioning contractions to the rowing warm-up enhance short-term rowing ergometer performance (especially at the start of a race) to a greater extent than a rowing warm-up alone. © 2012 National Strength and Conditioning Association.
- Description: 2003010579
The load-power relationship during a jump squat
- Authors: Radford, Chris , Talpey, Scott , Young, Warren
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Australian Strength and Conditioning Vol. 21, no. S2 (2013), p. 45-46
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Changes in leg power, jump and sprint performance following nine-weeks of conventional vs complex training
- Authors: Talpey, Scott , Young, Warren
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Australian Strength and Conditioning Vol. 21, no. s2 (2013), p. 78-80
- Full Text: false
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The acute effects of conventional, complex, and contrast protocols on lower-body power
- Authors: Talpey, Scott , Young, Warren , Saunders, Natalie
- Date: 2014
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 28, no. 2 (February 2014 2014), p. 361-366
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- Description: Talpey, SW, Young, WB, and Saunders, N. The acute effects of conventional, complex, and contrast protocols on lowerbody power. J Strength Cond Res 28(2): 361-366, 2014- This study compared conventional, complex, and contrast protocols on peak power (PP) output. Static vs. dynamic contractions were also manipulated to determine the effect of these confounding variables. Eighteen recreationally trained men [age, 21.1 ± 3.3 years; body mass, 81.7 ± 15.9 kg; height, 182.8 ± 6.2 cm; 5 repetition maximum (5RM) half back squat, 119.2 ± 25.4 kg; 5RM/BW, 1.5 ± 0.2 kg] involved in sports including Australian Rules football, basketball, soccer, and rugby participated in this investigation. Five protocols were executed in a randomized order, a conventional protocol in which 3 sets of 4 countermovement jumps (CMJs) were performed 2 minutes apart. Contrast protocols using a heavy resistance conditioning action of either 4 repetitions with a 5RM load or a 5-second static back squat were alternated with sets of 4 CMJs. Complex conditions with 3 sets of 4 repetitions of a 5RM back squat or a 5-second static back squat were performed before the 3 sets of CMJs. In all conditions, 4 minutes of rest followed sets of heavy resistance exercises and 2 minutes of rest followed each set of CMJs. Individual set means and a total session mean were calculated from each CMJ performed during the session. Results showed that the conventional protocol produced significantly greater PP than all conditions except for the dynamic complex and the static contrast. Results suggest that the use of the complex and contrast protocols used in this investigation should not be used for acute increases in lower-body PP in recreationally trained individuals.
Physical qualities predict change-of-direction speed but not defensive agility in Australian rules football
- Authors: Young, Warren , Miller, Ian , Talpey, Scott
- Date: 2015
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 29, no. 1 (2015), p. 206-212
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- Description:
The purpose of this study was to determine the relationships between selected physical qualities, change-ofdirection (COD) speed, and defensive agility performance in Australian Rules football players. Twenty-four male communitylevel players were assessed on sprint acceleration (10-m time), maximum strength (3 repetition-maximum half squat), leg power (countermovement jump), reactive strength (drop jump), and a single COD speed test and a defensive agility test. Change-of-direction speed was correlated with reactive strength (r = 20.645, p = 0.001) and sprint acceleration (r = 0.510, p = 0.011). Multiple regression indicated that the combined physical qualities explained 56.7% of the variance associated with COD speed (adjusted R
2 = 0.567, p ≤ 0.05). Participants were median split into faster and slower COD speed groups, and these were compared by independent t-tests. The faster group was significantly better (p ≤ 0.05) on the sprint acceleration and reactive strength tests (large effect size). The correlations between physical qualities and agility were trivial to small (r = -0.101 to 0.123, p > 0.05) and collectively explained only 14.2% of the variance associated with agility performance (adjusted R2 = -0.142, p > 0.05). When faster and slower agility groups were compared, there were trivial to moderate differences (p > 0.05) in all physical qualities. It was concluded that reactive strength and sprint acceleration are important for COD speed, but the physical qualities assessed are not associated with defensive agility performance. For agility tasks similar to those in this study, sprint and resistance training should not be emphasized, and training other factors, such as the development of sportspecific technique and cognitive skill, is recommended. © 2015 National Strength and Conditioning Association.
Sports Injury Prevention : The Role of the Strength and Conditioning Coach
- Authors: Talpey, Scott , Siesmaa, Emma
- Date: 2017
- Type: Text , Journal article
- Relation: Strength and Conditioning Journal Vol. 39, no. 3 (2017), p. 14-19
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- Description: Prevention of sports injuries is a priority for sport stakeholders across the spectrum of training and competition. Achieving this objective requires a multidisciplinary approach with strength and conditioning coaches playing an important role in the process. When considering sports injury prevention strategies, the role of the strength and conditioning coach can extend beyond observing exercise technique and prescribing training to develop a robust and resilient athlete. This paper provides strength and conditioning coaches with a broad overview of the sports injury prevention process and outlines examples of how strength and conditioning coaches can work to promote and improve athlete safety. © 2017 National Strength and Conditioning Association.
A comparison of Smith machine and barbell half squats to elicit potentiation in countermovement jump performance
- Authors: O'Grady, Mathew , Young, Warren , Talpey, Scott
- Date: 2015
- Type: Text , Journal article
- Relation: Journal of Australian Strength & Conditioning Vol. 23, no. 6 (2015), p. 90-94
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- Description: The article presents a study which compares the post activation potentiation (PAP) of Smith machine & barbell (BB) half squats in countermovement jump (CMJ) performance. It explores the different force output and muscle activation between the two different squatting methods in jumping performance. It shows repeated measures of ANOVA revealing a significant squat type by time interaction for the best peak power, indicating that CMJ is greater in Smith machine squat than the BB squat.
Sport-specific factors predicting player retention in junior cricket
- Authors: Talpey, Scott , Croucher, Tom , Bani-Mustafa, Ahmed , Finch, Caroline
- Date: 2017
- Type: Text , Journal article
- Relation: European Journal of Sport Science Vol. 17, no. 3 (2017), p. 264-270
- Relation: http://purl.org/au-research/grants/nhmrc/565900
- Relation: http://purl.org/au-research/grants/nhmrc/1058737
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- Description: Understanding factors that motivate young athletes to continue participation in sport can help key stakeholders cultivate an environment that fosters long-term participation. This investigation sought to determine the performance and participation factors that influenced continued participation in junior cricket. Administration-level data were collected each annual season across a seven-year period by a community-level junior cricket association in Australia and analysed to identify the performance and participation-based predictors of player retention. All players were males aged <16 years. Players were categorised according to whether they remained in (or departed from) the association at the end of each playing season. A multivariate logistic regression model with a stepwise variable selection was employed to identify significant independent predictors of player retention. The number of innings batted and overs bowled were significant participation-related contributors to junior cricket player retention. Performance factors such as the number of wickets taken and the number of runs scored also significantly influenced player retention. Finally, team age group, the number of previous seasons played and age were also significant factors in player retention. This demonstrates that sufficient opportunity for children to participate in the game and expression of skills competence are key factors for retention in cricket.
- Description: Understanding factors that motivate young athletes to continue participation in sport can help key stakeholders cultivate an environment that fosters long-term participation. This investigation sought to determine the performance and participation factors that influenced continued participation in junior cricket. Administration-level data were collected each annual season across a seven-year period by a community-level junior cricket association in Australia and analysed to identify the performance and participation-based predictors of player retention. All players were males aged <16 years. Players were categorised according to whether they remained in (or departed from) the association at the end of each playing season. A multivariate logistic regression model with a stepwise variable selection was employed to identify significant independent predictors of player retention. The number of innings batted and overs bowled were significant participation-related contributors to junior cricket player retention. Performance factors such as the number of wickets taken and the number of runs scored also significantly influenced player retention. Finally, team age group, the number of previous seasons played and age were also significant factors in player retention. This demonstrates that sufficient opportunity for children to participate in the game and expression of skills competence are key factors for retention in cricket. © 2016 European College of Sport Science.
Changes in lower body muscular performance following a season of NCAA Division I Men's Lacrosse
- Authors: Talpey, Scott , Axtell, Robert , Gardner, Elizabeth , James, Lachlan
- Date: 2019
- Type: Text , Journal article
- Relation: Sports Vol. 7, no. 1 (2019), p. 1-12
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- Description: The tactical and technical components of training become a primary emphasis, leaving less time for targeted development of physical qualities that underpin performance during the competition phase of a training program. A deemphasis on physical preparation during the in-season training phase may make athletes more susceptible to injury and decrease performance on the field. Two weeks prior to the start and one week following the conclusion of the 16-week collegiate lacrosse season, lower body force production was assessed in eight National Collegiate Athletic Association (NCAA) Division I Men's Lacrosse athletes. Lower body force production capabilities were determined via the performance of countermovement jumps (CMJ) and drop jumps (DJ) performed on a force plate and isokinetic strength testing of the quadriceps and hamstring muscle groups across three velocities. Isokinetic strength of the hamstrings and the hamstring to quadriceps strength ratio were maintained or increased over the course of the competition phase of training. Relative peak force obtained from the CMJ and the reactive strength index from the DJ decreased significantly over the season. The maintenance of isokinetic strength and the decrease in CMJ and DJ performance may indicate the presence of neuromuscular fatigue that accumulated over the course of the season.
The effects of sprint training and the Nordic hamstring exercise on eccentric hamstring strength and sprint performance in adolescent athletes
- Authors: Freeman, Brock , Young, Warren , Talpey, Scott , Smyth, Andrew , Pane, Calvin , Carlon, Todd
- Date: 2019
- Type: Text , Journal article
- Relation: Journal of Sports Medicine and Physical Fitness Vol. 59, no. 7 (2019), p. 1119-1125
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- Description: BACKGROUND. Hamstring strain injuries (HSI) are among the most common injuries in field-based team sports with a high-speed running component. The implementation of the Nordic hamstring exercise (NHE) is a well-documented method of improving eccentric hamstring strength to mitigate the risk of HSI occurrence. Sprint training is specific to the injury mechanism and is thought to activate the hamstrings through maximal eccentric contractions. The purpose of this study was to compare the effects of sprint training and the NHE on eccentric hamstring strength and sprint performance. METHODS. Twenty-eight participants (mean +/- SD age=16.21 +/- 1.34 years; height=1.75m +/- 0.10m; body mass=68.5kg +/- 12.1kg) completed an eccentric hamstring strength assessment and 40m sprint to assess acceleration and maximum speed. Participants were randomly allocated to either a NHE training or sprint training group. Two sessions per week for four-weeks of training was performed with baseline testing procedures repeated in the week following the intervention. Perceptions of soreness were recorded following the warm-up in each training session. RESULTS. Both the NHE (effect size=0.39, P<0.05) and sprint training (effect size=0.29, P<0.05) groups displayed significant gains in eccentric hamstring strength. The NHE group reported trivial improvements in sprint performance, whilst the sprint training group experienced a moderate improvement, specifically in maximum speed (ES=0.83 Moderate). Sprint training also produced greater perceptions of soreness than the NHE following a four-week training intervention, specifically before the start of the last session (P<0.05). CONCLUSIONS. These findings indicate that sprint training had a beneficial effect for both eccentric hamstring strength and sprint performance, whilst also producing greater soreness than the NHE following the final training session. It was concluded that a four-week block of maximum speed training may have both an injury prevention and performance enhancement benefit.
Acceleration, change of direction speed and agility profile of adult community level Australian football players
- Authors: Talpey, Scott , Young, Warren , Twomey, Dara , Doyle, Tim , Elliott, Bruce , Lloyd, David , Finch, Caroline
- Date: 2014
- Type: Text , Journal article
- Relation: Journal of Australian Strength & Conditioning Vol. 22, no. 5 (2014), p. 176-178
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- Description: The article presents research on the necessary data on change of direction (CODS), agility standards and sprint for Australian football (AF) coaches. Results of the study include the significance of specific information to AF players, the use of this information in highlighting the weaknesses and strengths among the players, and the implementation of certain training for CODS improvement.
Rating of perceived exertion is a stable and appropriate measure of workload in judo
- Authors: Bromley, Sally , Drew, Michael , McIntosh, Andrew , Talpey, Scott
- Date: 2018
- Type: Text , Journal article
- Relation: Journal of Science and Medicine in Sport Vol. 21, no. 10 (2018), p. 1008-1012
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- Description: Objectives: Heart rate (HR), blood lactate concentration [La] and/or rating of perceived exertion (RPE) have been utilised to monitor judo training load in technical and randori (competition training) sessions, but are yet to be investigated in mixed sessions containing both elements. Therefore the purpose of this study was to: (1) determine the stability of these variables, and (2) to assess the efficacy of RPE as a load variable for mixed judo sessions. Design: Cross-sectional study. Methods: Twenty-nine athletes attended two mixed training sessions at an international training camp. Bout and session characteristics, including RPE, physical and mental effort, heart rate (HR) and post-session [La] were recorded. A two-way random-effects intra-class correlation assessed variable stability. Multilevel mixed-effects ordered logistic regression investigated relationships between RPE and other variables for bouts and sessions. Results: Average and minimum HR across sessions correlated highly (ICC = 0.95 and 0.94, respectively). Good correlations existed between [La], session-RPE and mental effort, and fair correlation of max HR and physical effort. No relationships existed between [La]/HR and session-RPE. A unit increase in bout-RPE resulted in a 2.09 unit increase in physical, or a 1.36 unit increase in mental, effort holding all other bout variables constant. Gender and competitive level did not influence statistical models. Conclusions: Results provide further evidence that RPE can be used across a range of competitive levels and genders to monitor workload of mixed sessions and individual randori in judo. Physical effort may play a larger role than mental effort when athletes reflect on exertion during training. © 2018
Effect of instructions on selected jump squat variables
- Authors: Talpey, Scott , Young, Warren , Beseler, Bradley
- Date: 2016
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 30, no. 9 (2016), p. 2508-2513
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- Description: Talpey, SW, Young, WB, and Beseler, B. Effect of instructions on selected jump squat variables. J Strength Cond Res 30(9): 2508-2513, 2016-The purpose of this study was to compare 2 instructions on the performance of selected variables in a jump squat (JS) exercise. The second purpose was to determine the relationships between JS variables and sprint performance. Eighteen male subjects with resistance training experience performed 2 sets of 4 JS with no extra load with the instructions to concentrate on (a) jumping for maximum height and (b) extending the legs as fast as possible to maximize explosive force. Sprint performance was assessed at 0- to 10-m and 10- to 20-m distances. From the JS jump height, peak power, relative peak power, peak force, peak velocity, and countermovement distance were measured from a force platform and position transducer system. The JS variables under the 2 instructions were compared with paired t-tests, and the relationships between these variables and sprint performance were determined with Pearson's correlations. The jump height instruction produced greater mean jump height and peak velocity (p < 0.05), but the fast leg extension instruction produced greater (p < 0.05) peak force (3.7%). There was a trivial difference between the instructions for peak power output (p > 0.05). Jump height was the variable that correlated most strongly with 10-m time and 10- to 20-m time under both instructions. The height instruction produced a stronger correlation with 10-m time (r = -0.455), but the fast leg extension JS produced a greater correlation with 10-20 time (r = -0.545). The results indicate that instructions have a meaningful influence on JS variables and therefore need to be taken into consideration when assessing or training athletes.
Lower body exercise selection across the force-velocity continuum to enhance sprinting performance
- Authors: Young, Warren , Talpey, Scott , Feros, Simon , O'Grady, Mathew , Radford, Christopher
- Date: 2015
- Type: Text , Journal article
- Relation: Journal of Australian Strength and Conditioning Vol. 23, no. (2015), p. 39-42
- Full Text: false
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- Description: BLUF Training for the speed component of sprinting with resistance training requires the use of high velocity horizontally-directed exercises such as speed-bounding and sled sprinting. ABSTRACT The purpose of this article was to evaluate selected resistance training exercises in relation to the force-velocity continuum, with the application to sprinting performance in team sport athletes. The analysis of exercises was done by focussing on the peak velocities reached and comparing this to velocities in sprinting. Many popular resistance training exercises such as jump squats and modifications of the Olympic lifts are used to enhance the explosive muscle qualities required for sprinting. A common characteristic of these exercises is that force application and corresponding body/bar movement is directed vertically upward against gravity. This means that despite using light loads or no extra load, the resulting movements are relatively slow (less than 5 s-1). For example, adding any load to jump squats generally decreases power output compared to jumps with only bodyweight. Therefore, vertically-directed exercises should be considered as being strength-dominated. However, sprinting involves relatively short muscular contractions and considerably faster movement, even over short distances of less than 20 m. To prescribe exercises that are closer to the speed end of the force-velocity continuum, horizontally directed exercises are preferable. Examples include sled sprints and plyometric exercises such as speed-bounding. In a periodised program designed to enhance sprinting performance, vertical exercises such as jump squats and power cleans should be considered as strength-dominated, whereas horizontal exercises should be prescribed when speed qualities need to be emphasised such as in a pre-competition phase.
- Description: BLUF Training for the speed component of sprinting with resistance training requires the use of high velocity horizontally-directed exercises such as speed-bounding and sled sprinting. ABSTRACT The purpose of this article was to evaluate selected resistance training exercises in relation to the force-velocity continuum, with the application to sprinting performance in team sport athletes. The analysis of exercises was done by focussing on the peak velocities reached and comparing this to velocities in sprinting. Many popular resistance training exercises such as jump squats and modifications of the Olympic lifts are used to enhance the explosive muscle qualities required for sprinting. A common characteristic of these exercises is that force application and corresponding body/bar movement is directed vertically upward against gravity. This means that despite using light loads or no extra load, the resulting movements are relatively slow (less than 5 m
The effect of swimming volume and intensity on changes in supraspinatus tendon thickness
- Authors: Porter, Kirsten , Talpey, Scott , Pascoe, Deborah , Blanch, Peter , Walker, Helen , Shield, Anthony
- Date: 2021
- Type: Text , Journal article
- Relation: Physical Therapy in Sport Vol. 47, no. (2021), p. 173-177
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- Description: Objectives: To compare the change in supraspinatus tendon thickness (STT) following a high volume (HV) and high intensity (HI) swimming practice in shoulders of elite swimmers. Design: Cohort Study. Setting: Non-clinical, state swim team training facility. Participants: A convenience sample of eight non-injured state and national level swimmers from a regional swim team were recruited for this study. Main outcome measures: Ultrasound measures of STT were collected in response to the two swimming practice sessions. Measures were taken prior to each swim practice; immediately after practice; 6-hours post practice and 24-hours post practice. Results: A significant increase in STT resulted from both the HI and HV (p < 0.05) practice immediately post practice. For the HI practice, the STT remained significantly thicker than pre-practice measures at the 6-hour post practice test (p < 0.05) however no longer significant 24-hours post practice. The difference in the change in STT between the HI and HV practice was significantly different immediately post practice and 6-hours post practice (p < 0.05) however no longer significant 24-hour post practice. Conclusion: Ultrasound measures of STT following different swimming volumes and intensities may provide information on shoulder tendon loads. © 2020 Elsevier Ltd
Development of muscle mass : How much is optimum for performance?
- Authors: Young, Warren , Talpey, Scott , Bartlett, Rogan , Lewis, Mitchell , Mundy, Stephanie , Smyth, Andrew , Welsh, Tim
- Date: 2019
- Type: Text , Journal article
- Relation: Strength and Conditioning Journal Vol. 41, no. 3 (2019), p. 47-50
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- Description: Training for muscle hypertrophy can be expected to induce some increase in total body mass, and this can have positive or negative consequences for athletic performance. Positive effects may be increased strength, increased resistance to being pushed aside, and greater momentum when running, whereas possible negative effects may be reduced capacity to accelerate, decelerate, change direction, and jump. These possible effects of gaining muscle and total body mass suggest that strength and conditioning coaches should give thoughtful consideration to the amount of hypertrophy training prescribed throughout an athletes's development and should be determined by the specific needs of the athlete.
- Description: TRAINING FOR MUSCLE HYPERTROPHY CAN BE EXPECTED TO INDUCE SOME INCREASE IN TOTAL BODY MASS, AND THIS CAN HAVE POSITIVE OR NEGATIVE CONSEQUENCES FOR ATHLETIC PERFORMANCE. POSITIVE EFFECTS MAY BE INCREASED STRENGTH, INCREASED RESISTANCE TO BEING PUSHED ASIDE, AND GREATER MOMENTUM WHEN RUNNING, WHEREAS POSSIBLE NEGATIVE EFFECTS MAY BE REDUCED CAPACITY TO ACCELERATE, DECELERATE, CHANGE DIRECTION, AND JUMP. THESE POSSIBLE EFFECTS OF GAINING MUSCLE AND TOTAL BODY MASS SUGGEST THAT STRENGTH AND CONDITIONING COACHES SHOULD GIVE THOUGHTFUL CONSIDERATION TO THE AMOUNT OF HYPERTROPHY TRAINING PRESCRIBED THROUGHOUT AN ATHLETE'S DEVELOPMENT AND SHOULD BE DETERMINED BY THE SPECIFIC NEEDS OF THE ATHLETE.
Sprinting and hamstring strain injury : beliefs and practices of professional physical performance coaches in Australian football
- Authors: Freeman, Brock , Talpey, Scott , James, Lachlan , Young, Warren
- Date: 2021
- Type: Text , Journal article
- Relation: Physical Therapy in Sport Vol. 48, no. (2021), p. 12-19
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- Description: Objectives: The purpose of this study was to establish beliefs and practices of physical performance coaches regarding sprinting and Hamstring Strain Injury (HSI) in Australian Rules football. Designs: Delphi-validated questionnaire. Setting: Online. Participants: Eighteen high-performance managers of the Australian Football League. Main outcome measures: Descriptive statistics were collected to establish experience; central themes were established for the analyses of the beliefs and practices. Results: Nine (50%) physical performance coaches responded to an invitation to complete the questionnaire. Participants held an undergraduate degree and had 9.2 ± 4.3 years of experience. Accelerations (n = 9), maximum speed sprints (n = 9) and running with hip flexion (n = 7) were the most common activities associated with HSI. Coaches believed sprinting, eccentric strength training and proper periodisation were effective strategies to reduce HSI risk. There's a disparity between beliefs and practices when using GPS to monitor sprinting, however, all coaches reported regular exposure to sprint training across both pre and in-season. Overstriding (n = 9) and pelvic instability (n = 6) were identified as key flaws in running mechanics. Conclusions: This information can be used to improve training strategies, whilst these findings indicate further investigations into sprint training and running mechanics for HSI risk reduction. © 2020 Elsevier Ltd