Surface Electromyography Finding of Vastus Lateralis and Vastus Medialis during the Taijiquan Exercise
- VernacularTitle:太极拳特定动作下股内侧肌和股外侧肌表面肌电特征的研究
- Author:
Jingming OUYANG
;
Chuhuai WANG
;
Yuling WANG
;
Zhou ZHANG
;
Ping MIU
;
Yujuan WANG
;
Qiuhua YU
- Publication Type:Journal Article
- From:
Chinese Journal of Rehabilitation Theory and Practice
2009;15(11):1068-1070
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the characteristic of vastus lateralis (VL) and vastus medialis (VMO) during the Taijiquan exercise with surface electromyography (EMG). Methods 15 healthy adults were collected their median frequency (MF), mean power frequency (MPF), zero crossing rate (ZCR), averaged EMG (AEMG) of bilateral VL and VMO when they maintained 5 Taijiquan typical posture. Results The differences were not significant in all those indexes between VL and VMO during the postures of Baihe Liangchi and Jinji Duli, and were significant during the postures of Louxi Aobu, Shizi Tui, Pubu (P<0.05), the VL's indexes were less. Compared with the maximum voluntary contraction, Taijiquan was the lower loaded, and more slow muscle fibers could be recruited. Conclusion Taijiquan is a lower loaded exercise, and more slow muscle fibers can be recruited, especially in the VMO in some actions.
