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The Relationship between Grip Strength and Ground Reaction Force by Change of Position when Lifting Tasks

들기 작업할 때 자세의 변화에 따른 악력과 지면 반발력의 상관관계

  • Jung, Sang-Yong (Department of Occupational Ergonomics and Rehabilitation Health, Graduate School of Public Health, The Catholic University of Korea) ;
  • Gang, Jin-Woo (Catholic Industrial Medical Center, The Catholic University of Korea) ;
  • Koo, Jung-Wan (Department of Occupational Ergonomics and Rehabilitation Health, Graduate School of Public Health, The Catholic University of Korea)
  • 정상용 (가톨릭대학교 보건대학원 인간공학 및 재활보건학과) ;
  • 강진우 (가톨릭대학교 성모병원 산업의학센터) ;
  • 구정완 (가톨릭대학교 보건대학원 인간공학 및 재활보건학과)
  • Published : 2009.08.31

Abstract

The purpose of this study, during the lifting task was researching the difference and a relationship between the ground reaction force and the grip strength by change of position. After grip strength has measured in symmetry position and asymmetry position at 45cm and 75cm of height of hand, ground reaction force was measured by same attitude lifting wooden box. We analyzed the difference of grip strength and ground reaction force in each position change. The results of grip strength, the grip strength of both hand were significant difference that in study subject symmetry and asymmetry position (p<0.01). The results of symmetry lifting task, the study subjects was significant difference of the ground reaction force difference by height (p<0.05). Asymmetry lifting task was significant difference of ground reaction force difference by direction of rotation was changed (p<0.01). The result of it will rotate with non-dominant hand side of lifting tasks from height 75cm where it easily maintains a balance possibility and decreasing the load of the hand. Therefore, from the workshop in the work people, it will be between the height 75cm and non-dominant hand side of trunk rotatory direction in the lifting tasks. Future study is necessary researched about the change of grip strength when the height of the hand is higher, and the difference of the ground reaction force when the change of weight.

Keywords

References

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