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THE EFFECTS OF THREE DIFFERENT REAR KNEE ANGLES ON KINEMATICS IN THE SPRINT START
- Source :
- Biology of Sport, Vol 31, Iss 3, Pp 209-215 (2014)
- Publication Year :
- 2014
- Publisher :
- Termedia Publishing House, 2014.
-
Abstract
- The purpose of this study was to investigate the rear knee angle range in the set position that allows sprinters to reach greater propulsion on the rear block during the sprint start. Eleven university-track team sprinters performed the sprint start using three rear knee angle conditions: 90°, 115° and 135°. A motion capture system consisting of 8 digital cameras (250 Hz) was used to record kinematic parameters at the starting block phase and the acceleration phase. The following variables were considered: horizontal velocity of the centre of mass (COM), COM height, block time, pushing time on the rear block, percentage of pushing time on the rear block, force impulse, push-off angle and length of the first two strides. The main results show that first, horizontal block velocity is significantly greater at 90° vs 115° and 135° rear knee angle (p
Details
- Language :
- English
- ISSN :
- 0860021X and 20831862
- Volume :
- 31
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Biology of Sport
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6a92a0f168a4e2b91d1588f251b1fbf
- Document Type :
- article
- Full Text :
- https://doi.org/10.5604/20831862.1111848