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Original Article

Effects of abdominal hollowing and abdominal bracing during side-lying hip abduction on the lateral rotation and muscle activity of the pelvis

원문정보

Dong-Woo Kim, Tae-Ho Kim

한국운동재활학회 JER Vol.14 No.2 2018.04 pp.226-230
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초록

영어

It is important that compensatory lateral movement of the pelvis does not occur during side-lying hip abduction (SHA). The purpose of the present study is to investigate the effects of abdominal hollowing and abdominal bracing during SHA on pelvic lateral rotation (PLR) and the electromyography activity of the gluteus medius, quadratus lumborum (QL), external oblique abdominis (EO) and internal oblique abdominis (IO). A total of 22 healthy male adults participated in the study. The sub-jects performed three conditions in side-lying in random order: SHA with abdominal hollowing (SHA-AH), SHA with abdominal bracing (SHA-AB), and SHA without any condition (SHA-WC). The angle of PLR in SHA-AB was significantly lower compared to SHA-AH and SHA-WC, and angle of PLR in SHA-AH was significantly lower than that in SHA-WC. The muscle activity of the QL was significantly greater for SHA-AB compared to SHA-AH and SHA-WC. The muscle activity of the EO was significantly greater for SHA-AB compared to SHA-AH and SHA-WC. And the muscle activity of the EO for SHA-AH was significantly greater than that for SHA-WC. The muscle activity of the IO was significantly greater for SHA-AH and SHA-AB compared to SHA-WC. Based on these results, we suggest that abdominal bracing increases the muscle activity of QL, EO, and IO, and decreases the angle of PLR compare to abdominal hollowing during SHA.

목차

Abstract
 INTRODUCTION
 MATERIALS AND METHODS
  Subjects
  Three-dimensional ultrasonic motion analysis system
  Surface EMG recording and data processing
  Experimental procedures
  Statistical analyses
 RESULTS
 DISCUSSION
 CONFLICT OF INTEREST
 REFERENCES

저자정보

  • Dong-Woo Kim Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Gyeongsan, Korea
  • Tae-Ho Kim Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Gyeongsan, Korea

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