Physical Therapy Rehabilitation Science

korean Academy of Physical Therapy Rehabilitation Science (물리치료재활과학회)
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Effect of the Abdominal Bracing Maneuver on Muscle Activity of the Trunk and Legs during Walking in Healthy Adults

  • Park, Daechan (Department of Physical Therapy, Korea University Hospital) ;
  • Lee, Miyoung (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) ;
  • Chung, Yijung (Department of Physical Therapy, College of Health and Welfare, Sahmyook University)
  • Received : 2022.03.14
  • Accepted : 2022.05.04
  • Published : 2022.06.30
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Abstract

Objective: This study aimed to investigate the effect of the application of abdominal brace techniques on muscle activity of the trunk and lower extremities when walking. Design: Cross-sectional study Methods: This study was conducted on 26 healthy adults in their 20s, and the subjects performed two conditions in random order: walking with the abdominal bracing technique and walking in an abdominal relaxation state (normal gait). Muscle activity was measured on the dominant side of all subjects using surface electromyography, and the attachment sites were the erector spinae, external oblique, internal oblique, vastus lateralis, and vastus medialis oblique muscles. Each condition was measured three times to calculate and analyze the average value. Results: When walking using the abdominal brace technique, the muscle activity of the erector spinae, external oblique, internal oblique, and vastus lateralis increased significantly (p<0.05), and the muscle activity of the vastus medialis increased as well but was not significant. Conclusions: The results of this study indicate that it is possible to be used as an effective guide to increasing the muscle activity and stability of the trunk and lower extremities through the application of the abdominal bracing technique during walking.

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