Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Effect of Scapulothoracic Joint Movement and Resistance Training Intensity on Shoulder Complex Muscle Activation during Bench Press Exercise

벤치 프레스 운동 시 하중에 따른 어깨가슴관절의 움직임이 어깨복합체 근 활성도에 미치는 영향

  • Kim, Yoon-Hwan (Department of Sports Industry, Graduate School of Sports Industry Kookmin University) ;
  • Lee, Ki-Kwang (Department of Physical Education, Kookmin University) ;
  • Lee, Man-Ki (Department of Sports and Leisure Studies, Inje University)
  • 김윤환 (국민대학교 스포츠산업대학원 스포츠산업학과) ;
  • 이기광 (국민대학교 체육대학 경기지도학과) ;
  • 이만기 (인제대학교 자연과학대학 사회체육학과)
  • Received : 2013.05.20
  • Accepted : 2013.06.11
  • Published : 2013.06.30
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Abstract

The purpose of this study was to investigate the scapulothoracic joint movement between different weight bearing contributing to effective bench press exercise. Ten male subjects participated in this study. All subjects were tested on the flat bench press machine which modified weight (50% and 70% of 1RM) and subjects were performed two different conditions(none protraction condition and protraction condition). Weight bar height and vertical velocity, EMG activation was measured using 3D motion capture system and wireless EMG analysis system. As the results, none protraction condition showed that it is more concentrate better pectoralis major muscle activation than protraction condition and middle pectoralis major, anterior deltoid and triceps brachii was significant higher integrated EMG in 70% of 1RM condition. In conclusion, limited scapulothoracic joint movement was more effective activated pectoralis major muscle all the weight through, while we could not find that it was not affected integrated EMG on eight muslces related to shoulder complex between scapulothracic joint movement conditions.

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References

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