한국전문물리치료학회지 (Physical Therapy Korea)

  • 제22권4호
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  • Pages.17-26
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  • 2015
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  • 1225-8962(pISSN)
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  • 2287-982X(eISSN)
한국전문물리치료학회 (Korean Research Society of Physical Therapy)
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Selective Muscle Activation With Visual Electromyographic Biofeedback During Scapular Posterior Tilt Exercise in Subjects With Round-Shoulder Posture

  • Son, Jae-ik (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Lim, One-bin (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Han, Hae-rim (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Cynn, Heon-seock (Dept. of Physical Therapy, College of Health Science, Yonsei University) ;
  • Yi, Chung-hwi (Dept. of Physical Therapy, College of Health Science, Yonsei University)
  • 투고 : 2015.10.08
  • 심사 : 2015.11.11
  • 발행 : 2015.11.19
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초록

The purpose of this study was to investigate the effects of visual electromyography (EMG) biofeedback on the EMG activity of the lower trapezius (LT), serratus anterior (SA), and upper trapezius (UT) muscles, the LT/UT and SA/UT EMG activity ratios, and the scapular upward rotation angle during scapular posterior tilting exercise (SPTE). Twenty-four subjects with round-shoulder posture participated in this study. The EMG activities of the LT, SA, and UT were collected during SPTE both without and with visual EMG biofeedback. The scapular upward rotation angle was measured at the baseline, after SPTE without visual EMG biofeedback, and after SPTE with visual EMG biofeedback. The LT, SA, and UT EMG activities, and the LT/UT and SA/UT EMG activity ratios were analyzed by paired t-test. The scapular upward rotation angle was statistically analyzed using one-way repeated analysis of variance. If a significant difference was found, a Bonferroni correction was performed (p=.05/3=.017). The EMG activities of LT and SA significantly increased, and the EMG activity of UT significantly decreased during SPTE with visual EMG biofeedback compared to SPTE without visual EMG biofeedback (p<.05). In addition, the LT/UT and SA/UT EMG activity ratios significantly increased during SPTE with visual EMG biofeedback compared to SPTE without visual EMG biofeedback (p<.05). Significant increases were found in the scapular upward rotation angle after SPTE without and with visual EMG biofeedback compared to baseline (p<.017), and no significant differences were observed in the scapular upward rotation angle between SPTE without and with visual EMG biofeedback. In conclusion, SPTE using visual EMG biofeedback may be an effective method for increasing LT and SA activities while reducing UT activity.

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참고문헌

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