Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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The Influence of Abdominal Drawing-In Maneuver on Lumbar Lordosis and Trunk and Lower Extremity Muscle Activity During Bridging Exercise

교각운동 시 복부 드로잉-인 방법이 요부 전만과 체간 및 하지의 근 활성도에 미치는 영향

  • 김은옥 (한서대학교 대학원 물리치료학과) ;
  • 김택훈 (한서대학교 물리치료학과) ;
  • 노정석 (한서대학교 물리치료학과) ;
  • 신헌석 (한서대학교 물리치료학과) ;
  • 최홍식 (한서대학교 물리치료학과) ;
  • 오동식 (한서대학교 물리치료학과)
  • Received : 2008.10.31
  • Accepted : 2009.01.08
  • Published : 2009.02.19
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Abstract

An abdominal drawing-in maneuver (ADIM) with a pressure biofeedback unit can be used to prevent excessive lumbar lordosis during bridging exercise. Therefore, in this research, the effects of an ADIM on lumbar lordosis and lower extremity muscle activity during bridging exercise were investigated in thirty healthy adults. Surface electromyography (EMG) and VICON system were used to collect kinematic data and muscle activity, respectively. A paired t-test was used to determine a statistical significance. The results showed as follows: (1) When performing bridging exercise with an ADIM, the height of the anterior superior iliac spine and greater trochanter decreased significantly (p<.05). (2) When performing bridging exercise with an ADIM, the trunk extension angle and pelvic angle increased significantly (p<.05). (3) When performing bridging exercise with an ADIM, the EMG signal amplitude increased significantly in the rectus abdominis, internal oblique abdominis, external oblique abdominis, medial hamstring, and lateral hamstring (p<.05). (4) When performing bridging exercise with an ADIM, the EMG signal amplitude decreased significantly in the erector spinae (p<.05). From the result of this research, an ADIM trained with pressure biofeedback unit during bridging exercise is effective to prevent excessive contraction of erector spinae, to limit excessive motion of pelvis from sagittal plane and to increase muscle activity of abdominal muscles and hamstring muscle.

Keywords

References

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