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Effects of Lower Rib Expansion Limitation on Maximal Respiratory Pressure and Abdominal Muscle Activity During Maximal Breathing in Healthy Subjects

  • Lee, Gyu-wan (Department of Physical Therapy, Gangnam Severance Hospital) ;
  • Yoon, Tae-Lim (Department of Physical Therapy, College of Health and Medical Science, Cheongju University) ;
  • Lee, Young-jung (Department of Physical Therapy, Bundang Jesaeng Hospital) ;
  • Kim, Ki-song (Department of Physical Therapy, College of Natural Science, Hoseo University) ;
  • Yi, Chung-hwi (Department of Physical Therapy, College of Health Science, Yonsei University)
  • 투고 : 2020.12.09
  • 심사 : 2020.12.31
  • 발행 : 2020.12.31

초록

Purpose: The aim of this study was to determine the effects of lower rib cage lateral expansion limitation on the maximal inspiratory and expiratory pressures and on abdominal muscle activity during maximal respiratory breathing in healthy subjects. Methods: Fifteen healthy male subjects voluntarily participated in this cross-sectional study. During maximal breathing, maximal inspiratory and expiratory pressures were measured, and abdominal muscle activity was determined with using surface electromyography. Also, the measurement was repeated with using a non-elastic belt to the lower rib cage for limiting of lateral expansion. A Wilcoxon signed-rank test was performed for obtaining the statistical difference with a significance level of 0.05. Results: The findings of this study are as follows: 1) There were no significant differences in maximal inspiratory and expiratory pressure with and without lower rib cage lateral expansion (p>0.05), 2) There was no significant difference in abdominal muscle activity during the maximal inspiratory phase (p>0.05). However, right external oblique muscle activity decreased significantly during maximum exhalation with lower rib expansion limitation (p<0.05). Conclusion: The results of the current study indicate that a non-elastic belt was effective in decreasing right external oblique muscle activity during forced expiratory breathing in healthy subjects.

키워드

참고문헌

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