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ISSN : 2092-8475(Print)
ISSN : 2714-0148(Online)
Journal of International Academy of Physical Therapy Research Vol.10 No.3 pp.1818-1822
DOI : https://doi.org/10.20540/JIAPTR.2019.10.3.1818

Change in Pelvic Motion Caused by Visual Biofeedback Influences Trunk and Hip Muscle Activities During Side-Lying Hip Abduction in Asymptomatic Individuals

Ilyoung Yua,Minhyeok Kangb
aDepartment of Rehabilitation Center, Gupo Sungshim Hospital, Busan, Republic of Korea
bDepartment of Physical Therapy, International University of Korea, Jinju, Republic of Korea
E-mail: kmhyuk01@gmail.com
Address for correspondence
Minhyeok Kang, PT, Ph.D Department of Physical Therapy, International University of Korea, 965 Dongburo Munsaneup, Jinju, Korea Tel: 82-55-751-8292

Abstract

Background: Ipsilateral pelvic elevation has been reported as a common compensatory movement during side-lying hip abduction. It has been reported that pelvic elevation inhibits sufficient contraction of gluteus medius. However, few studies have identified the effects of controlled pelvic elevation on the trunk and hip muscles.
Objective: To examine the effects of controlled pelvic elevation using visual biofeedback on the muscle activity of the trunk and hip muscles.
Design: Crossover study.
Methods: Twelve healthy males performed side-lying hip abduction exercises with and without visual biofeedback for pelvic elevation. Electromyography (EMG) activities of the gluteus medius, quadratus lumborum, and multifidus were analyzed using a wireless EMG system while the ipsilateral pelvic elevation angle was measured using a motion sensor during side-lying hip abduction exercises.
Results: EMG activities of the gluteus medius (p = .002), quadratus lumborum (p = .022), and multifidus (p = .020) were significantly increased and ipsilateral pelvic elevation was significantly decreased (p = .001) during side-lying hip abduction with visual biofeedback compared to without visual biofeedback.
Conclusions: The results of this study suggest that the application of biofeedback for pelvic motion could improve the trunk and hip muscle activation pattern and decrease compensatory pelvic motion during side-lying hip abduction exercise.

초록

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