Ignite Creation Date:
2024-10-26 @ 3:41 PM
Last Modification Date:
2024-10-26 @ 3:41 PM
Study NCT ID:
NCT06619899
Status:
ACTIVE_NOT_RECRUITING
Last Update Posted:
None
First Post:
2024-09-17
Brief Title:
Post-activation Potentiation and Sprinting Performance
Sponsor:
None
Organization:
None
Study Overview
Official Title:
Investigation of Post-activation Potentiation Phenomenon Οn Sprinting Performance Following Power Pre-conditioning Exercise
Status:
ACTIVE_NOT_RECRUITING
Status Verified Date:
2024-09
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
No
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
PAP-SP
Brief Summary:
Scientific data regarding the post-activation potentiation PAP phenomenon on sprinting performance is scarce especially regarding the effect of performing pre-conditioning power exercises on subsequent sprinting performance Additionally there is no data regarding the rate of fatigue onset when power pre-conditioning exercise before sprints are performed repeatedly at the same training session This research will provide important information to coaches and athletes for the design of an optimum training program for the maximization of the athletes performance and the avoidance of injuries
Detailed Description:
Sprinting ability is an imperative quality for many sports especially for sprint and power athletes Regular sprint training improves acceleration maximal speed and power Thus sprint training consists one of the basic elements of the athletes training program
One method used by coaches to improve performance is the implementation of a pre-conditioning exercise aiming to post-activation potentiation PAP Post-activation potentiation phenomenon refers to the increase in performance following a maximal or near maximal muscle contraction eg a pre-conditioning exercise However the effectiveness of such an approach is under debate such that improvement but also no improvement or even deterioration of the performance following pre-conditioning exercises has been reported The improvement of performance following a pre-conditioning exercise seems to depend on the relationship between muscle twitch potentiation and fatigue following the pre-conditioning exercise When muscle twitch potentiation is greater than muscle fatigue then the PAP mechanism will be activated and performance will be improved Contrary under similar muscle twitch potentiation and fatigue performance will not change and when muscle twitch potentiation is lower than fatigue muscle performance will decrease PAP phenomenon has been studied mainly regarding its effectiveness to improve jumping performance while its effectiveness on improving sprinting performance has not been adequately studied However information regarding the effectiveness of the implementation of pre-conditioning exercises aiming to improve sprinting performance is important for the design of an optimum training program for the maximization of the athletes performance and the avoidance of injuries
The aim of this study is to investigate a the effectiveness of the implementation of a pre-conditioning exercise to activate the PAP mechanism and improve performance of a following sprint and b to investigate whether PAP is maintained in repeated efforts during the same training session
The study will be implemented in a randomized cross over repeated measures design at three cycles
According to a preliminary power analysis a probability error of 005 and a statistical power of 80 a sample size of 8 - 10 participants was considered appropriate in order to detect statistically meaningful differences between groups Considering a possible drop-out 15 participants will be recruited Procedures will be in accordance with the 1964 Declaration of Helsinki as revised in 2013
Before the experimental procedures all participants will sign an informed consent form after they will be informed about all the benefits and risks of the study and they will also fill in a medical history questionnaire Participants will then perform baseline measurements at the Laboratory of Biochemistry Physiology and Nutrition of Exercise SmArT Lab Department of Physical Education and Sport Science University of Thessaly anthropometric characteristics body height body mass body mass index via a stadiometer-scale Stadiometer 208 Seca Birmingham UK body composition percent of body fat lean body mass fat mass bone density via dual emission X-ray absorptiometry DXA GE-Healthcare Lunar DPX NT Belgium isokinetic strength isometric concentric and eccentric torque of the knee extensors and knee flexors of both limbs on an isokinetic dynamometer Cybex HUMAC NORM 360 Ronkonkoma NY The individual optimum rest period between the pre-conditioning exercise and the subsequent 30-m sprint will be estimated in order each participant to perfrom each 30-m sprint under an optimal condition The rest periods of 3 6 and 9 minutes will be tested for each participant and the rest period that leads to the best sprinting performance will be applied during the experimental training protocols
Participants will then perform 6 x 30-m sprints under three different conditions in a random order a control trial sprint training without pre-conditioning exercise b sprint training with pre-conditioning exercise 2 x 4 squat jumps with 0 of 1RM at squat and c sprint training with pre-conditioning exercise 2 x 4 squat jumps with 20 of 1RM at squat The randomization of the trials will be made via a random integer set generator Randomorg available online
Prior to and following each 30-m sprint assessment of muscle soreness in the knee flexors and knee extensors countermovement jump height and blood lactate concentration will be performed during each training session The exact above procedures will be repeated by the participants during the remaining two experimental trials Between trials a wash-out period of 7 days will be applied
One method used by coaches to improve performance is the implementation of a pre-conditioning exercise aiming to post-activation potentiation PAP Post-activation potentiation phenomenon refers to the increase in performance following a maximal or near maximal muscle contraction eg a pre-conditioning exercise However the effectiveness of such an approach is under debate such that improvement but also no improvement or even deterioration of the performance following pre-conditioning exercises has been reported The improvement of performance following a pre-conditioning exercise seems to depend on the relationship between muscle twitch potentiation and fatigue following the pre-conditioning exercise When muscle twitch potentiation is greater than muscle fatigue then the PAP mechanism will be activated and performance will be improved Contrary under similar muscle twitch potentiation and fatigue performance will not change and when muscle twitch potentiation is lower than fatigue muscle performance will decrease PAP phenomenon has been studied mainly regarding its effectiveness to improve jumping performance while its effectiveness on improving sprinting performance has not been adequately studied However information regarding the effectiveness of the implementation of pre-conditioning exercises aiming to improve sprinting performance is important for the design of an optimum training program for the maximization of the athletes performance and the avoidance of injuries
The aim of this study is to investigate a the effectiveness of the implementation of a pre-conditioning exercise to activate the PAP mechanism and improve performance of a following sprint and b to investigate whether PAP is maintained in repeated efforts during the same training session
The study will be implemented in a randomized cross over repeated measures design at three cycles
According to a preliminary power analysis a probability error of 005 and a statistical power of 80 a sample size of 8 - 10 participants was considered appropriate in order to detect statistically meaningful differences between groups Considering a possible drop-out 15 participants will be recruited Procedures will be in accordance with the 1964 Declaration of Helsinki as revised in 2013
Before the experimental procedures all participants will sign an informed consent form after they will be informed about all the benefits and risks of the study and they will also fill in a medical history questionnaire Participants will then perform baseline measurements at the Laboratory of Biochemistry Physiology and Nutrition of Exercise SmArT Lab Department of Physical Education and Sport Science University of Thessaly anthropometric characteristics body height body mass body mass index via a stadiometer-scale Stadiometer 208 Seca Birmingham UK body composition percent of body fat lean body mass fat mass bone density via dual emission X-ray absorptiometry DXA GE-Healthcare Lunar DPX NT Belgium isokinetic strength isometric concentric and eccentric torque of the knee extensors and knee flexors of both limbs on an isokinetic dynamometer Cybex HUMAC NORM 360 Ronkonkoma NY The individual optimum rest period between the pre-conditioning exercise and the subsequent 30-m sprint will be estimated in order each participant to perfrom each 30-m sprint under an optimal condition The rest periods of 3 6 and 9 minutes will be tested for each participant and the rest period that leads to the best sprinting performance will be applied during the experimental training protocols
Participants will then perform 6 x 30-m sprints under three different conditions in a random order a control trial sprint training without pre-conditioning exercise b sprint training with pre-conditioning exercise 2 x 4 squat jumps with 0 of 1RM at squat and c sprint training with pre-conditioning exercise 2 x 4 squat jumps with 20 of 1RM at squat The randomization of the trials will be made via a random integer set generator Randomorg available online
Prior to and following each 30-m sprint assessment of muscle soreness in the knee flexors and knee extensors countermovement jump height and blood lactate concentration will be performed during each training session The exact above procedures will be repeated by the participants during the remaining two experimental trials Between trials a wash-out period of 7 days will be applied
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None