Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Skeletal Muscle Strength Characteristics in Elderly People and Its Relationship with Body Composition

노인 근력 특성 및 체성분과의 관계

  • Choi, Dong-Sung (Department of Physical Education, Graduate School of Yonsei University) ;
  • Jeon, Justin Y. (Department of Sports and Leisure Studies, College of Science in Education, Yonsei University) ;
  • Won, Young-Shin (Department of Sports and Leisure Studies, College of Science in Education, Yonsei University) ;
  • Lee, Hae-Dong (Department of Physical Education, College of Science in Education, Yonsei University)
  • 최동성 (연세대학교 대학원 체육학과) ;
  • 전용관 (연세대학교 교육과학대학 스포츠레저학과) ;
  • 원영신 (연세대학교 교육과학대학 스포츠레저학과) ;
  • 이해동 (연세대학교 교육과학대학 체육교육과)
  • Received : 2011.04.30
  • Accepted : 2011.09.14
  • Published : 2011.09.30
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Abstract

The purpose of this study was to investigate the relationship among isometric and isokinetic muscle strength, lean body mass(LBM) and bone mineral density(BMD) in the elderly. Eleven males(age, 70.27${\pm}$5.78yr; height, 167.36${\pm}$6.68 cm; weight, 68.34${\pm}$8.23 kg) and thirteen female(age, 69.77${\pm}$4.13yr; height, 152.80${\pm}$4.45 cm; weight, 56.86${\pm}$7.40 kg) participated in this study. In all subjects, LBM and BMD segments was measured by using Dual-energy x-ray absorptiometry(DEXA, Lunar DPS-DM, U.S.A.). Maximum isometric and isokinetic muscle strength of flexion and extension at the knee and elbow, ankle, trunk joints were measured by using an isokinetic dynamometer(CON-TREX(R) Multi Joint Testing Module, Switzerland). The results of this study showed that isometric and isokinetic muscle strength was significantly higher in extension than flexion. In the male and female, hamstring to quadriceps strength ratio(H:Q ratio) was increased as contraction velocity increased. BMD was correlated significantly with trunk extension in the male, but not in the female. LBM was correlated significantly in the male and female with knee extension strength. This study suggests that in the elderly muscle strength training program should put more weight on extensor muscles of the body.

Keywords

References

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