A LONGITUDINAL INVESTIGATION ON DROP JUMP PERFORMANCE-FOCUSING ON BRAIN CONDITION DURING PRE-SET, STRETCH REFLEX AND JOINT KINETICS DURING TAKE-OFF

Authors

Takuya Yoshida, University of Tsukuba, TsukubaFollow
Kazutaka Takashi, University of Tsukuba, TsukubaFollow
Masamichi Okudaira, University of Tsukuba, Tsukuba
Seita Kuki, University of Tsukuba, Tsukuba
Amane Zushi, University of Tsukuba, TsukubaFollow
Fusako Kawahara, University of Tsukuba, TsukubaFollow
Kodayu Zushi, University of Tsukuba, TsukubaFollow
SATORU TANIGAWA, University of Tsukuba, TsukubaFollow

Category

Motor control

Document Type

Paper

Abstract

The purpose of this study was to investigate the change in drop jump (DJ) performance with a training process that focused on the state of the brain during the pre-set phase, the stretch reflex during the take-off phase, and the joint kinetics of lower extremities during take-off phase. Three male sprinters performed DJ from a drop height of 0.6 m. We measured variables for state of the brain during the pre-set phase, stretch reflex, and kinetics of lower extremities during take-off. The results revealed that the brain showed disinhibition during the pre-set phase, and stretch reflex facilitation, and an increase in force development of the ankle joint were observed during the take-off phase. Therefore, we propose that the mutual enhancement on component of performance in each phase may be effective in improving DJ performance during a training course.

Recommended Citation

Yoshida, Takuya; Takashi, Kazutaka; Okudaira, Masamichi; Kuki, Seita; Zushi, Amane; Kawahara, Fusako; Zushi, Kodayu; and TANIGAWA, SATORU (2018) "A LONGITUDINAL INVESTIGATION ON DROP JUMP PERFORMANCE-FOCUSING ON BRAIN CONDITION DURING PRE-SET, STRETCH REFLEX AND JOINT KINETICS DURING TAKE-OFF," ISBS Proceedings Archive: Vol. 36: Iss. 1, Article 146.
Available at: https://commons.nmu.edu/isbs/vol36/iss1/146