The Effects of Plyometric Training on Knee Flexion Angles During Jump Landing in Post-Pubescent Adolescent Females
Additional Funding Sources
This project is supported by a 2017-2018 STEM Undergraduate Research Grant from the Higher Education Research Council.
Abstract
PURPOSE: The purpose of this study was to determine if a six-week plyometric training intervention would significantly decrease knee flexion angles while completing jump-landing tasks from a plyometric box.
METHODS:Twenty post-pubescent adolescent females participated in pre- and post-testing, as well as the six week (3 days/week) plyometric training intervention. Intervention training included plyometric drills such as depth jumps, lateral hops, single-leg hops, and power skips. Pre- and post-plyometric intervention testing consisted of a five-minute warm-up on a cycle ergometer, followed by three jump-landing tasks from a 63 cm in height plyometric box. Knee flexion measurements were analyzed using reflective joint markers located on the right fibular lateral malleolus, tibial lateral condyle and approximately 1.5 inches above the greater trochanter. Kinovea™ software was utilized for identifying knee flexion angles for both pre- and post-testing. Changes in knee flexion angles were analyzed using a paired T-test with a significant value set at p<.05.
RESULTS:A statically significant (p = .03487) decrease in knee flexion angles was found following the six-week plyometric training intervention. Mean values were calculated for both pre-(M = 87.158 degrees; SD = 14.454) and post (M = 80.0 degrees; SD = 12.8582) intervention training knee flexion angles.
CONCLUSION:Results from data analysis suggest that a six-week plyometric training intervention causes a significant decrease in knee flexion angles in post-pubescent adolescent females. Drop landing techniques are improved due to plyometric training.
The Effects of Plyometric Training on Knee Flexion Angles During Jump Landing in Post-Pubescent Adolescent Females
PURPOSE: The purpose of this study was to determine if a six-week plyometric training intervention would significantly decrease knee flexion angles while completing jump-landing tasks from a plyometric box.
METHODS:Twenty post-pubescent adolescent females participated in pre- and post-testing, as well as the six week (3 days/week) plyometric training intervention. Intervention training included plyometric drills such as depth jumps, lateral hops, single-leg hops, and power skips. Pre- and post-plyometric intervention testing consisted of a five-minute warm-up on a cycle ergometer, followed by three jump-landing tasks from a 63 cm in height plyometric box. Knee flexion measurements were analyzed using reflective joint markers located on the right fibular lateral malleolus, tibial lateral condyle and approximately 1.5 inches above the greater trochanter. Kinovea™ software was utilized for identifying knee flexion angles for both pre- and post-testing. Changes in knee flexion angles were analyzed using a paired T-test with a significant value set at p<.05.
RESULTS:A statically significant (p = .03487) decrease in knee flexion angles was found following the six-week plyometric training intervention. Mean values were calculated for both pre-(M = 87.158 degrees; SD = 14.454) and post (M = 80.0 degrees; SD = 12.8582) intervention training knee flexion angles.
CONCLUSION:Results from data analysis suggest that a six-week plyometric training intervention causes a significant decrease in knee flexion angles in post-pubescent adolescent females. Drop landing techniques are improved due to plyometric training.
Comments
Th64