Nevels, R.M.R. (Rick) (2019) Effects of Plyometric Training on Functional Performance and Biomechanics of the Lower Extremities in Male Amateur Soccer Players. thesis, Sport Sciences.
Full text available on request.Abstract
In a sport like soccer, which repeatedly require players to perform striding, turning, sprinting, cutting and jumping actions, a high demand is placed on the lower extremities. Plyometric training could strengthen the lower extremities to enhance performance. Therefore, the aim of the present study is to assess the effects of a plyometric training program on functional performance and biomechanics of the lower extremities in male amateur soccer players. 24 healthy male amateur soccer players from two local clubs were included in this cluster randomized controlled trial (CRCT). The clubs were randomly assigned to either the bounding exercise program (BEP)-group or control (CON)-group. Functional performance and biomechanics (kinematics and kinetics) were assessed during an 45° unanticipated sidestep cutting task (entry time, exit time, total time in seconds) and a drop vertical jump (DVJ) height (cm). Kinematics and kinetics were collected at the time of peak vertical ground reaction force (vGRF) using Customized MATLAB 6.1 software. In total 15 players completed the study (9 BEP-group and 6 CON-group). Functional performance and biomechanics were analyzed separately using a 2 x 2 repeated measures ANOVA. A significant time-by-group interaction was found (F (1,13) = 6,907 p= 0,021) for entry time (BEP Pre: 0,91 ± 0,07 Post: 0,86 ± 0,05 and CON Pre: 0,91 ± 0,07 Post: 0,93 ± 0,07), but not for exit time and total time. Furthermore, jump height did not improve. Finally, a significant time-by-group interaction was found (F (1,13) = 5,487 (p= 0,036) for hip flexion angle during the DVJ (BEP Pre: 43,68 ± 11,47 Post: 39,49 ± 9,69 and CON Pre: 42,20 ± 13,84 Post: 45,54 ±8,70). The bounding exercise program improved initial sprint speeds (entry time) in amateur soccer players. Jump height did not seem to be affected. Hip flexion angle during the drop vertical jump decreased indicating altered landing biomechanics.
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Brink, dr. M.S. and Benjaminse, dr. A. and Hoef, drs. S. van de |
| Faculty: | Medical Sciences |
| Date Deposited: | 23 May 2022 10:29 |
| Last Modified: | 23 May 2022 10:30 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3424 |
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