pISSN 2288-6982
eISSN 2288-7105




Phys. Ther. Korea 2017; 24(1): 9-18

Published online February 28, 2017

© Korean Research Society of Physical Therapy

근전도 바이오피드백을 이용한 숏 풋 운동이 정적으로 선 자세 동안 발의 안쪽 세로활 유지에 미치는 영향

차상민1, 강민혁1, 문동철2, 오재섭3

1인제대학교 대학원 물리치료학과,
2김해대학교 물리치료과,
3인제대학교 의생명공학대학 물리치료학과

Effect of the Short foot Exercise Using an Electromyography Biofeedback on Medial Longitudinal Arch During Static Standing Position

Sang-min Cha1, Min-hyeok Kang1, Dong-chul Moon2, Jae-seop Oh3

1Dept. of Physical Therapy, The Graduate School, Inje University,
2Dept. of Physical Therapy, Gimhae College,
3Dept. of Physical Therapy, College of Biomedical Science and Engineering, Inje University

Correspondence to: Corresponding author: Jae-seop Oh

Received: December 1, 2016; Revised: December 1, 2016; Accepted: January 2, 2017



Short foot exercise (SFex) is often prescribed and performed in the sport and rehabilitation fields to strengthen intrinsic foot muscles. However, SFex is difficult to perform because of lack of feedback methods.


The aim of this study was to compare the effects of SFex with and without electromyography (EMG) biofeedback on the medial longitudinal arch (MLA) of healthy individuals who maintained a static standing position.


All participants (14 males and 12 females) were randomly divided into two groups (biofeedback and non-biofeedback groups). The EMG activity of the abductor hallucis (AbdH) and tibialis anterior (TA) and the MLA angle on the dominant leg side were measured with the participant in the standing position in the pre- and post-intervention conditions. The intervention session consisted of 15 minutes of SFex with (biofeedback group) or without (non-biofeedback group) EMG biofeedback. The groups were compared using two-way repeated measures analysis of variance.


The post-intervention activities of the AbdH muscle (p<.05) and the AbdH/TA ratio (p<.05) were significantly greater in the biofeedback group than in the non-biofeedback group. The activity of the TA (p<.05) and the MLA angle (p<.05) in the biofeedback group were significantly lower in the post-intervention condition than in the pre-intervention condition.


The present findings demonstrate that the combination of SFex and EMG biofeedback can effectively facilitate the muscle activity of the AbdH and strengthen the medial longitudinal arch.

Keywords: Electromyography biofeedback, Medial longitudinal arch, Short foot exercise