Journal of The Korean Society of Integrative Medicine (대한통합의학회지)

Korean Society of Integrative Medicine (대한통합의학회)
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Effect of Ribcage Stabilization Using a Belt on EMG Activity of the Abdominal Muscles During Double Leg Lowering in the Supine Position

벨트를 이용한 가슴우리 고정이 누운자세에서 다리내리기 동안 복부 근육들의 근활성도에 미치는 영향

  • 원종혁 (중부대학교 물리치료학과)
  • Received : 2017.04.12
  • Accepted : 2017.05.11
  • Published : 2017.06.30
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Abstract

Purpose : The purpose of this study was to determine the effect of ribcage stabilization using a belt in the supine position during double leg lowering (DLL) by investigating the electromyographic (EMG) activities of the abdominal muscles. Methods : Twenty-two subjects with lumbar extension syndrome were recruited. EMG activity was recorded from rectus abdominalis (RA) and internal oblique abdominalis (IO), external oblique abdominalis (EO) muscles while subjects performed three double leg lowering exercises: double leg lowering (DLL), double leg lowering with abdominal draw-in maneuver (DLL-ADIM), and double leg lowering with ribcage stabilization using a belt (DLL-belt). RA, IO, and EO EMG activity were analyzed via one-way repeated-measures analysis of variance (ANOVA). Bonferroni correction was performed where significant differences were identified (p<.017, .05/3). Results : RA, IO, and EO EMG activity differed significantly among the three exercises (p<.05). The use of post hoc pair-wise comparison with Bonferroni correction showed that RA muscle activity significantly differed among the three exercises (p<.017), and IO muscle activity in the DLL exercise was significantly decreased compared to the DLL-ADIM and DLL-belt exercises (p<.017). There was no significant difference between IO muscle activity for DLL-ADIM and DLL-belt exercises (p>.017). EO muscle activity in the DLL-belt exercise was significantly increased compared to both DLL and DLL-ADIM exercises (p<.017), but there was no significant difference between EO muscle activity for DLL and DLL-ADIM exercises (p>.017). Conclusion : DLL-belt is a more effective exercise for activating the abdominal muscles than DLL-ADIM exercise. Therefore, we recommend DLL-belt exercises for strengthening the abdominal muscles.

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References

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