An evaluation of 30-km cycling time trial (TT30) pacing strategy through time-to-exhaustion at average TT30 pace
- Authors: Ham, Daniel , Knez, Wade
- Date: 2009
- Type: Text , Journal article
- Relation: Journal of strength and conditioning research / National Strength & Conditioning Association Vol. 23, no. 3 (2009), p. 1016-1021
- Full Text:
- Reviewed:
- Description: A paucity of research is available on the optimal pacing strategy for cycling events longer than 4 km. Anecdotal evidence suggests that an even pacing strategy is most suitable; however, controlled studies have only determined that a slow start is more suitable than a fast start pacing strategy. Currently, it is unclear which strategy is more effective for endurance cycling time trials. This study sought to identify differences in 30-km cycling time trial (TT30) performance related to pacing strategies by comparing individually chosen pacing strategy with time-to-exhaustion (TE) at the average power output achieved during TT30. Eight moderately trained male cyclists (Vo2max = 50.9 +/- 5.2 mlxkgxmin) performed 2 TT30 tests and 2 TE tests at the average power output of TT30 on a Velotron cycle ergometer at the same time of day, separated by at least 48 hours. During TT30, participants generally chose to use a 'fast start' pacing strategy, cycling at a speed relative to the TT average (TTAvg) of 103.1 +/- 2.2% during the first 5 km. There was no significant difference in performance time between the TE test and TT30. Starting pace (TT0-5) was significantly correlated with finishing pace (TT25-30) (r = -0.91; p < 0.01) and TE (r = 0.85; p < 0.01). Subjects cycling at a relative starting speed (RS0-5) >105% had a significantly longer TE than subjects cycling at <105%, whereas TT30 performance time was not different between the two groups. The present investigation provided indirect evidence that a fast start pacing strategy decreases finishing speed and overall performance in TT30, and increased TT performance can be achieved by selecting a starting pace no more than 5% above TTAvg.
- Authors: Ham, Daniel , Knez, Wade
- Date: 2009
- Type: Text , Journal article
- Relation: Journal of strength and conditioning research / National Strength & Conditioning Association Vol. 23, no. 3 (2009), p. 1016-1021
- Full Text:
- Reviewed:
- Description: A paucity of research is available on the optimal pacing strategy for cycling events longer than 4 km. Anecdotal evidence suggests that an even pacing strategy is most suitable; however, controlled studies have only determined that a slow start is more suitable than a fast start pacing strategy. Currently, it is unclear which strategy is more effective for endurance cycling time trials. This study sought to identify differences in 30-km cycling time trial (TT30) performance related to pacing strategies by comparing individually chosen pacing strategy with time-to-exhaustion (TE) at the average power output achieved during TT30. Eight moderately trained male cyclists (Vo2max = 50.9 +/- 5.2 mlxkgxmin) performed 2 TT30 tests and 2 TE tests at the average power output of TT30 on a Velotron cycle ergometer at the same time of day, separated by at least 48 hours. During TT30, participants generally chose to use a 'fast start' pacing strategy, cycling at a speed relative to the TT average (TTAvg) of 103.1 +/- 2.2% during the first 5 km. There was no significant difference in performance time between the TE test and TT30. Starting pace (TT0-5) was significantly correlated with finishing pace (TT25-30) (r = -0.91; p < 0.01) and TE (r = 0.85; p < 0.01). Subjects cycling at a relative starting speed (RS0-5) >105% had a significantly longer TE than subjects cycling at <105%, whereas TT30 performance time was not different between the two groups. The present investigation provided indirect evidence that a fast start pacing strategy decreases finishing speed and overall performance in TT30, and increased TT performance can be achieved by selecting a starting pace no more than 5% above TTAvg.
A comparison of the effects of fatigue on subjective and objective assessment of situation awareness in cycling
- Authors: Knez, Wade , Ham, Daniel
- Date: 2006
- Type: Text , Journal article
- Relation: Journal of Sports Science and Medicine Vol. 5, no. 1 (2006), p. 89-96
- Full Text:
- Reviewed:
- Description: Maximal effort on a 30 km Time Trial (TT30) was examined to assess whether it would elicit changes in objective and subjective tests of the participants' perception of the environment and their ability to anticipate future occurrences (situation awareness; SA) and to determine the effect of post-exercise recovery on SA. Nine experienced (5.22 ± 2.77 years) road cyclists had their objective and subjective levels of SA assessed prior to and at the completion of two TT30. The participants' results were compared to measurements of maximal oxygen uptake (VO2max), peak power output (PPO), age and years of competitive cycle racing experience. Fatigue resulting from maximal effort on a TT30 produced significant changes in both the objective and subjective test of SA. Effect sizes of 0.93 and 0.99 indicated that the first and second TT30 were likely or almost certain to have a beneficial effect on the objective assessment of SA. However, the effect sizes of 0.97 and 0.95 relating to the subjective assessment of cognitive performance on the first and second TT30 showed that it was very likely the participants' had an increased difficulty in maintaining SA. A recovery period of up to three minutes post TT30 had no effect on SA. Changes in SA had no relationship with measurements of VO2max, peak power output (PPO), age and years of competitive cycle racing experience. The findings suggest that within a laboratory environment, participants consistently underestimate their ability to make accurate assessments of their cycling environment compared to objective measures of their SA. ©Journal of Sports Science and Medicine (2006).
- Description: C1
- Authors: Knez, Wade , Ham, Daniel
- Date: 2006
- Type: Text , Journal article
- Relation: Journal of Sports Science and Medicine Vol. 5, no. 1 (2006), p. 89-96
- Full Text:
- Reviewed:
- Description: Maximal effort on a 30 km Time Trial (TT30) was examined to assess whether it would elicit changes in objective and subjective tests of the participants' perception of the environment and their ability to anticipate future occurrences (situation awareness; SA) and to determine the effect of post-exercise recovery on SA. Nine experienced (5.22 ± 2.77 years) road cyclists had their objective and subjective levels of SA assessed prior to and at the completion of two TT30. The participants' results were compared to measurements of maximal oxygen uptake (VO2max), peak power output (PPO), age and years of competitive cycle racing experience. Fatigue resulting from maximal effort on a TT30 produced significant changes in both the objective and subjective test of SA. Effect sizes of 0.93 and 0.99 indicated that the first and second TT30 were likely or almost certain to have a beneficial effect on the objective assessment of SA. However, the effect sizes of 0.97 and 0.95 relating to the subjective assessment of cognitive performance on the first and second TT30 showed that it was very likely the participants' had an increased difficulty in maintaining SA. A recovery period of up to three minutes post TT30 had no effect on SA. Changes in SA had no relationship with measurements of VO2max, peak power output (PPO), age and years of competitive cycle racing experience. The findings suggest that within a laboratory environment, participants consistently underestimate their ability to make accurate assessments of their cycling environment compared to objective measures of their SA. ©Journal of Sports Science and Medicine (2006).
- Description: C1
Monitoring core body temperature in infantry soldiers and airfield defence guards
- Ham, Daniel, Lee, C., Payne, Warren, Harvey, Jack
- Authors: Ham, Daniel , Lee, C. , Payne, Warren , Harvey, Jack
- Date: 2005
- Type: Text , Conference paper
- Relation: Journal of Science and Medicine in Sport Vol. 8, no. 4 Supplement (2005), p. 58
- Full Text: false
- Reviewed:
- Description: During strenuous and/or extended exercise in hot environments, considerable body heat can be produced. If the heat produced is above the body's thermoregulatory capacities, or if these capacities are impeded, a rise in core body temperature (Tc) will occur. Infantry soldiers and Airfield Defence Guards within the Australian Defence Force (ADF) are often based in areas which expose them to high levels of thermal stress. Furthermore, they must perform physically demanding training and operations, often in full camouflage, and on occasions with a range of equipment including body armour, which further increases the risk of developing a heat illness during training tasks. The ADF is addressing this issue as part of the Defence Physical Employment Standards (DPES) project, which aims at developing new employment standards using tests that reflect job requirements, and in which soldiers and airmen will be required to complete a number of strenuous and/or extended physical tasks. Two high risk tasks involve marching for either 10 or 20 km at an average velocity of 6km/hr, wearing full camouflage and carrying a 45kg pack. A third high risk task, which simulates movement in urban terrain, is shorter in duration but higher in intensity, and involves wearing ballistic vest, helmet, and webbing. In order to enhance safety by decreasing the risk of heat injury associated with completing these three tasks, Tc is being monitored using telemetric pills. A subject who reaches a Tc of 39.5oC will be withdrawn from the task. Preliminary testing in reasonably mild environmental conditions (15-20oC WBGTO), resulted in steady increases in Tc throughout each task, though no subject's core temperature reached 39.5 in any of the tasks.
- Description: 2003005936
Physical performance tests and standards: Infantry and ADG: Report 12
- Payne, Warren, Harvey, Jack, Brotherhood, John, Knez, Wade, Ham, Daniel
- Authors: Payne, Warren , Harvey, Jack , Brotherhood, John , Knez, Wade , Ham, Daniel
- Date: 2007
- Type: Text , Report
- Relation: Defence Physical Employment Standards Project: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG).
- Authors: Payne, Warren , Harvey, Jack , Brotherhood, John , Knez, Wade , Ham, Daniel
- Date: 2007
- Type: Text , Report
- Relation: Defence Physical Employment Standards Project: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG).
Reliability of potential physical employment tests: Infantry and ADG: Report 10
- Harvey, Jack, Payne, Warren, Knez, Wade, Ham, Daniel
- Authors: Harvey, Jack , Payne, Warren , Knez, Wade , Ham, Daniel
- Date: 2006
- Type: Text , Report
- Relation: Defence Physical Employment Standards Project. Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG).
- Authors: Harvey, Jack , Payne, Warren , Knez, Wade , Ham, Daniel
- Date: 2006
- Type: Text , Report
- Relation: Defence Physical Employment Standards Project. Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG).
- Payne, Warren, Knez, Wade, Harvey, Jack, Sinclair, Wade, Elias, G., Ham, Daniel
- Authors: Payne, Warren , Knez, Wade , Harvey, Jack , Sinclair, Wade , Elias, G. , Ham, Daniel
- Date: 2005
- Type: Text , Conference paper
- Relation: Journal of Science and Medicine in Sport Vol. 8, no. 4 Supplement (2005), p. 190
- Full Text: false
- Reviewed:
- Description: The Australian Defence Force (ADF) has resolved to establish a series of physical employment standards for Infantry soldiers and Airfield Defence Guards. A key stage in establishing these standards is to analyse the physical requirements of the two jobs. The purpose of this study was to analyse the physical requirements of the key physical tasks required within the two jobs. The jobs were divided into over 100 component tasks. Some tasks were common to the two jobs while others were specific to the respective jobs. ADF subject matter experts identified 36 tasks that were considered to be the most physically demanding. These tasks were observed to determine the movement patterns (actions) and muscle groups involved, the duration, velocity and estimated of exercise intensity. An estimate was also made of the involvement of each of seven activity types (endurance, strength-endurance etc) in each task and the exercise volume contained within each task. The tasks were ranked based upon the volume of work involved within each classification of activity type and movement action. Based upon these analyses, a series of tasks were chosen as those which best reflected the range of physical requirements of an Infantry soldier and an Airfield Defence Guard. These tasks were: marching while carrying support weapons, carrying ammunition boxes, assaulting, wall climbing, sandbagging, jumping from a height, pursuiting, rope climbing, patrolling in an urban environment, population protection, patrolling in marching order, building forced entry and stair climbing, casualty evacuation, loading stores and digging.
- Description: 2003005933
Trade tasks movement analysis: Infantry and ADG: Report 4
- Payne, Warren, Knez, Wade, Harvey, Jack, Sinclair, Wade, Elias, George, Ham, Daniel
- Authors: Payne, Warren , Knez, Wade , Harvey, Jack , Sinclair, Wade , Elias, George , Ham, Daniel
- Date: 2005
- Type: Text , Report
- Relation: Defence Physical employment standards project: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG)
- Authors: Payne, Warren , Knez, Wade , Harvey, Jack , Sinclair, Wade , Elias, George , Ham, Daniel
- Date: 2005
- Type: Text , Report
- Relation: Defence Physical employment standards project: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG)
Heat injury risk of simulated march and urban patrol infantry tasks
- Payne, Warren, Ham, Daniel, Harvey, Jack, Lee, Craig, Sinclair, Wade, McNaughton, Lars, Rudzki, Stephan
- Authors: Payne, Warren , Ham, Daniel , Harvey, Jack , Lee, Craig , Sinclair, Wade , McNaughton, Lars , Rudzki, Stephan
- Date: 2006
- Type: Text , Journal article
- Relation: Medicine & Science in Sports & Exercise Vol. 38, no. 5 (2006), p. S270-S271
- Full Text: false
- Reviewed:
- Description: 2003005927
Selected of criterion trade tasks: Infantry and ADG: Report 8
- Payne, Warren, Harvey, Jack, Knez, Wade, Brotherhood, John, Culvenor, John, Selig, Steve, Ham, Daniel
- Authors: Payne, Warren , Harvey, Jack , Knez, Wade , Brotherhood, John , Culvenor, John , Selig, Steve , Ham, Daniel
- Date: 2005
- Type: Text , Report
- Relation: Defence Physical Employment Standards Projects: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG)1.
- Authors: Payne, Warren , Harvey, Jack , Knez, Wade , Brotherhood, John , Culvenor, John , Selig, Steve , Ham, Daniel
- Date: 2005
- Type: Text , Report
- Relation: Defence Physical Employment Standards Projects: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards. In the initial phase, the study is focused on one Army corps - Infantry, and one Air Force mustering - Airfield Defence Guards (ADG)1.
Normative physical performance data: Infantry and ADG: Report 11
- Payne, Warren, Harvey, Jack, Knez, Wade, Selig, Steve, Sinclair, Wade, Ham, Daniel, Lee, Craig
- Authors: Payne, Warren , Harvey, Jack , Knez, Wade , Selig, Steve , Sinclair, Wade , Ham, Daniel , Lee, Craig
- Date: 2006
- Type: Text , Report
- Relation: Defence Physical Employment Standards Projects: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards.
- Authors: Payne, Warren , Harvey, Jack , Knez, Wade , Selig, Steve , Sinclair, Wade , Ham, Daniel , Lee, Craig
- Date: 2006
- Type: Text , Report
- Relation: Defence Physical Employment Standards Projects: Infantry and Airfield Defence Guards
- Full Text:
- Reviewed:
- Description: Military operational tasks are physically demanding and incur the risk of injury. In order to address the issues and costs associated with the high injury rates and focus on ways to reduce the risk of injury to Australian Defence Force (ADF) personnel, the ADF Chiefs of Service Committee (COSC) has endorsed a number of injury prevention strategies aimed at examining, analysing and evaluating injury-related risks and hazards within the ADF. In line with those strategies, COSC has affirmed that ADF employment policy is to be competency based and agreed that physical employment standards should be developed for combat arms trades. The purpose of the Defence Physical Employment Standards Project (DPESP) is to develop these performance-based competency standards. The ADF has employed the services of the University of Ballarat (UB) to undertake the DPESP. This involves reviewing combat arms trade tasks (CATTs), establishing a set of criterion CATTs, developing a battery of simulation and predictive tests based on the criterion CATTs to be used to assess the physical competency of ADF combat personnel, and making recommendations for associated physical employment standards.
A deterministic model of the vertical jump : Implications for training
- Ham, Daniel, Knez, Wade, Young, Warren
- Authors: Ham, Daniel , Knez, Wade , Young, Warren
- Date: 2007
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 21, no. 3 (2007), p. 967-972
- Full Text:
- Reviewed:
- Description: A deterministic model of the vertical jump: implications for training. J. Strength Cond. Res. 21(3):967-972. 2007. - Increasing vertical jump height is a critical component for performance enhancement in many sports. It takes on a number of different forms and conditions, including double and single legged jumps and stationary and run-up jumps. In an attempt to understand the factors that influence vertical jump performance, an extensive analysis was undertaken using the deterministic model. Once identified, practical training strategies enabling improvement in these factors were elucidated. Our analysis showed that a successful vertical jump performance was the result of a complex interplay of run-up speed, reactive strength, concentric action power of the take-off leg(s), hip flexors, shoulders, body position, body mass, and take-off time. Of special interest, our analysis showed that the concentric action power of the legs was the critical factor affecting stationary double leg vertical jumps, whereas reactive strength was the critical component for a single leg jump from a run-up. © 2007 National Strength & Conditioning Association.
- Description: C1
- Description: 2003005651
- Authors: Ham, Daniel , Knez, Wade , Young, Warren
- Date: 2007
- Type: Text , Journal article
- Relation: Journal of Strength and Conditioning Research Vol. 21, no. 3 (2007), p. 967-972
- Full Text:
- Reviewed:
- Description: A deterministic model of the vertical jump: implications for training. J. Strength Cond. Res. 21(3):967-972. 2007. - Increasing vertical jump height is a critical component for performance enhancement in many sports. It takes on a number of different forms and conditions, including double and single legged jumps and stationary and run-up jumps. In an attempt to understand the factors that influence vertical jump performance, an extensive analysis was undertaken using the deterministic model. Once identified, practical training strategies enabling improvement in these factors were elucidated. Our analysis showed that a successful vertical jump performance was the result of a complex interplay of run-up speed, reactive strength, concentric action power of the take-off leg(s), hip flexors, shoulders, body position, body mass, and take-off time. Of special interest, our analysis showed that the concentric action power of the legs was the critical factor affecting stationary double leg vertical jumps, whereas reactive strength was the critical component for a single leg jump from a run-up. © 2007 National Strength & Conditioning Association.
- Description: C1
- Description: 2003005651
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