Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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Deltoid Middle Fiber of the Isometric Contraction According to Elastic Band and Dumbbell on Various Shoulder Abduction Angle

탄력밴드와 아령에 의한 저항이 다양한 어깨관절 외전 각도에서 중간 어깨 세모근의 등척성 수축에 미치는 영향

  • Park, Min-Chull (Dept. of Physical Therapy, College of Health Sciences, Catholic University of Pusan) ;
  • Lee, Sang-Yeol (Dept. of Physical Therapy, College of Science, Kyungsung University)
  • 박민철 (부산가톨릭대학교 보건과학대학 물리치료학과) ;
  • 이상열 (경성대학교 이과대학 물리치료학과)
  • Received : 2016.04.12
  • Accepted : 2016.04.18
  • Published : 2016.05.31
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Abstract

PURPOSE: The purpose of this study was to compare isometric contraction of deltoid middle fiber between elastic band and light dumbbell on various shoulder abduction angle. And this study intends to examine the compare with isometric contraction on deltoid middle fiber in various abduction angle of shoulder joint. METHODS: The participants of this study were Korean healthy adult in their 20s (n=60). The 8 channel surface electromyography was used to measure activity of the deltoid middle fiber at isomeric contraction on various abduction angle: $0^{\circ}$, $30^{\circ}$, $60^{\circ}$, $90^{\circ}$, $120^{\circ}$ of shoulder joint using elastic band: red color Theraband and dumbbell: 2kg. The data used in the analysis of the present study was the root mean square. RESULTS: The deltoid middle fiber activation was not significantly different between elastic band and dumbbell at each abduction angle. The deltoid middle fiber activation significantly increased as more to increased shoulder abduction angle in elastic band and dumbbell. CONCLUSION: The elastic band and dumbbell was to provide the similarly load to the deltoid middle fiber isometric contraction on all of the shoulder abduction angle. The deltoid middle fiber activation increased as more to increased shoulder abduction angle in elastic band and dumbbell. These results may be an important reference in development of exercise on shoulder joint.

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References

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