Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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Comparison of Abdominal and Lumbar Multifidus Muscle Activity During Unilateral Hip Extension in Prone Position on the Floor and on a Round Foam Roll

  • Kim, Su-Jung (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Park, Kyu-Nam (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Ha, Sung-Min (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Kwon, Oh-Yun (Dept. of Physical Therapy, College of Health Science, Yonsei University/Dept. of Ergonomic Therapy, The Graduate School of Health and Environment, Yonsei University) ;
  • Kim, Hyun-Sook (Dept. of Physical Therapy, Yeojoo Institute of Technology)
  • Received : 2012.03.11
  • Accepted : 2012.03.20
  • Published : 2012.05.21
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Abstract

The purpose of this study was to compare the muscle activity of the abdominal and lumbar multifidus during unilateral prone hip extension on the floor and on a round foam roll. Fifteen healthy participants were recruited. They were instructed to perform a unilateral hip extension on the floor and on a round foam roll in the prone position. Surface electromyography (EMG) signals were recorded from bilateral lumbar multifidus (LM), external oblique (EO), and internal oblique (IO) muscles. A paired t-test was used to compare muscle activity, with the level of significance set at ${\alpha}$=.05. The results showed that bilateral LM, EO, IO EMG activity during right-hip extension on a round foam roll was greater than that on the floor, and EMG activity of bilateral LM, right EO, and left IO during left-hip extension on a round foam roll was greater than that on the floor (p<.05). These findings suggest that the unilateral hip-extension exercise on a round foam roll can be used to activate the lumbar multifidus and abdominal oblique muscles and causes a different increasing pattern between the two lifting sides.

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References

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