Posted: June 30th, 2015

Does sprint speed increase via maximal jumping prior to sprint performance?

Does sprint speed increase via maximal jumping prior to sprint performance?

Order Description

Scientific article – The preparation of an Article for publication: Prepare an article for publication in an academic journal utilising the Journal of Sport Science’s published refereed guidelines, with a supporting critical reflective report detailing the development process and challenges arising.
My chosen topic-Amongst research into maximizing performance continually being studied, my research study will be to discover whether maximal jumping prior to sprinting enhances overall performance. Till, K. A., & Cooke, C (2009) states that the initial bout of heavy lifting summits the nervous system for activity, making it operate at its peak. The study will explore the rate of force production, jump height and speed comparing the values in order to understand whether post activation effect created by maximal body weight jumps will enhance performance. Research also shows that the correlation between the rate of force production during an explosive movement and performance. It can then be theorized that maximal jumping prior would produce an increase performance on jump height and sprint speed. The hypothesis is that jumping will cause a post activation potentiation (PAP) response within the muscle. This will positively effect their sprint times, as the muscles will remain more activated after their jumps allowing faster sprint speeds. This study will help us to understand the pap response and if it is possible to elicit a pap response through maximal jumping, this will also be a protocol that can be put into place for athletes during the warm up before training/competition.
Participants
The sample will consist of undergraduate students who represent Middlesex university athletics team 15 participants who are either 100/200 metres sprinter. Aged 18-25
Materials/ Tools
Speed gates to measure sprint time, isokinetic force plate to measure rate of force production, measuring tape to measure the standing long jump.
Procedure
Participants will first complete a standardized warm up will be completed to ensure that the subjects will be mentally and physically ready for the test. Subjects will first complete two maximal countermovement jumps on force plate with 2 minutes break in between, this will then be followed by 15 minutes recovery time then two trials of 30 meters sprint which will be recorded with speed gates in order to validate the results. First trial will be completed then subjects will be given 15 minutes recovery time then complete trial two. This will give my study baseline measurements. Sprinting is maximal exercise and places stress on the body therefore it is essential sufficient time is given for subjects to recover.
Test day 2 will require my subjects to perform five maximal standing long jumps with 45 seconds in between; this is because post activation potentiation can only be activated by heavy exertions. Subjects will then perform two maximal countermovement jumps with two-minute rest, this will be done using a force plate in order to measure rate of force production (RFD). Followed by two trials of 30 metres sprint, completed in a self-selected time between 6-12 minutes after jumping. These two tests will have to be performed with the strict time constraints to allow recovery the energy systems and to stop lactic acid or muscular fatigue becoming a factor in the readings taken in the two conditions ensuring the exact same rest time as in the baseline measurements to ensure reliability and validity of my study.
The sample will involve 15 undergraduates who compete for the Middlesex university athletics team. Before the participants begin the study I will ensure that each participant will complete and sign both consent forms and physical activity readiness questionnaire (PAR-Q) which will determine the safety as well as the potential danger of exercising for the participants according to their health history questions. Participants will give their anthropometry measurements (age, weight, height (cm), foot length (cm), shank length (cm), thigh length (cm). The participants will complete tests baseline and intervention test in order to identify and compare rate of improvement if any.

The tests, which will be used, are: vertical countermovement jump, standing long jump, 30 meters sprint and isokinetic analysis using a force plate. The main aim of this study will be to explore whether the rate of production, jump height and speed is affected when post activation potentiation is activated. This will be repeated measure in order to identify whether performance will be enhanced when pap effect is activated. Before any exercise is completed a standardized warm up will be completed to ensure that the subjects will be mentally and physically ready for the test. Subjects will first complete two maximal countermovement jumps on force plate with 2 minutes break in between, this will then be followed by 15 minutes recovery time then two trials of 30 meters sprint which will be recorded with speed gates in order to validate the results. First trial will be completed then subjects will be given 15 minutes recovery time then complete trial two. This will give my study baseline measurements. Sprinting is maximal exercise and places stress on the body therefore it is essential sufficient time is given for subjects to recover.

Test day 2 will require my subjects to perform five maximal standing long jumps with 45 seconds in between; this is because post activation potentiation can only be activated by heavy exertions. Subjects will then perform two maximal countermovement jumps with two-minute rest, this will be done using a force plate in order to measure rate of force production (RFD). Followed by two trials of 30 metres sprint, completed in a self-selected time between 6-12 minutes after jumping. These two tests will have to be performed with the strict time constraints to allow recovery the energy systems and to stop lactic acid or muscular fatigue becoming a factor in the readings taken in the two conditions ensuring the exact same rest time as in the baseline measurements to ensure reliability and validity of my study.

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