Okamura Kazunori, Kanai Shusaku, Hasegawa Masaki, Otsuka Akira, Oki Sadaaki
Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Mihara-shi, Hiroshima 723-0053, Japan.
Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, Mihara-shi, Hiroshima 723-0053, Japan.
J Back Musculoskelet Rehabil. 2019;32(5):685-691. doi: 10.3233/BMR-181155.
The short foot (SF) exercise is a strengthening exercise for the intrinsic foot muscles that is difficult to master.
To examine the effect of three different electromyographic (EMG) biofeedback methods on learning the SF exercise.
Thirty-six healthy subjects were randomly allocated to the control group (CTG), EMG-controlled electrical stimulation group (ESG), visual EMG biofeedback group (VSG), and combination EMG-controlled electrical stimulation with visual EMG biofeedback group (CBG). The CTG practiced the SF exercise for 5 minutes using the conventional method. The other groups each used the EMG biofeedback method and the conventional method. The EMG activity of the abductor hallucis (ABH), the medial longitudinal arch (MLA) angle, and the foot length during the SF exercise were measured before and after 5 minutes of practice.
The EMG activity of the ABH in the VSG and CBG was significantly higher than that before practice. There were no intergroup differences in MLA morphology.
These results suggest that visual EMG biofeedback is an effective method of increasing the EMG activity of the ABH during the SF exercise in a short practice time.
短足（SF）练习是一种针对足部固有肌肉的强化练习，难以掌握。
研究三种不同的肌电图（EMG）生物反馈方法对学习SF练习的效果。
36名健康受试者被随机分配至对照组（CTG）、肌电图控制电刺激组（ESG）、视觉肌电图生物反馈组（VSG）以及肌电图控制电刺激与视觉肌电图生物反馈联合组（CBG）。CTG采用传统方法进行5分钟的SF练习。其他组分别使用肌电图生物反馈方法和传统方法。在练习5分钟前后，测量SF练习过程中拇展肌（ABH）的肌电活动、内侧纵弓（MLA）角度和足长。
VSG和CBG中ABH的肌电活动显著高于练习前。MLA形态在组间无差异。
这些结果表明，视觉肌电图生物反馈是在短时间练习中增加SF练习期间ABH肌电活动的有效方法。
