The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Assessment of Isokinetic Muscle Strength in the Knee Extensor Through the Ankle Joint Angles

발목관절 각도에 따른 무릎 폄근의 등속성 근력 평가

  • Park, Sang-Young (Department of Rehabilitation Science, Graduate School, Daegu University) ;
  • Kim, Chung?Sun (Department of Physical Therapy, College of Rehabilitation Science, Daegu University) ;
  • Kim, Joong?Hwi (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu) ;
  • Lee, In?Hee (Department of Medical Informatics, School of Medicine, Keimyeung University) ;
  • Jang, Jong?Sung (Department of Physical Therapy, Yeungnam College of Science & Technology) ;
  • Seo, Tae?Soo (Department of Physical Therpy, Daegu Health College)
  • 박상영 (대구대학교 대학원 재활과학과) ;
  • 김중선 (대구대학교 재활과학대학 물리치료학과) ;
  • 김중휘 (대구가톨릭대학교 의료과학대학 물리치료학과) ;
  • 이인희 (계명대학교 의과대학 의료정보학교실) ;
  • 장종성 (영남이공대학 물리치료과) ;
  • 서태수 (대구보건대학 물리치료과)
  • Received : 2010.07.17
  • Accepted : 2011.01.10
  • Published : 2011.02.25
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Abstract

Purpose:This study was designed to investigate difference in isokinetic muscle strength in the knee extensor muscle and characteristic differences in muscle strength between males and females through the ankle joint angles. Methods: Seventy-four subjects participated in this study. There were two groups: 36 males and 38 females. The mean age of the men was 24.58 years and women was 23.74 years. Subjects were seated on a CON-TREX LP (leg press) lean to back of chair, and there bodies were fixed by straps with the hip joint at an angle of $130^{\circ}$. After randomly fixing the ankle joint at $0^{\circ}$, $20^{\circ}$, and $40^{\circ}$ of plantar flexion (PF) in range of full extension of knee joint. We studied force max average, force max average/kg, power average, and total work through the angle of the ankle joint when the knee joint was extended from $90^{\circ}$ to $180^{\circ}$. Results: In the male group, all maximum measured value showed at the ankle joint $0^{\circ}$, all minimum measured value showed at $40^{\circ}$ PF (p<0.01). In the female group, all maximum measured value showed at the ankle joint $20^{\circ}$ PF, especially the power average increased significantly. All minimum measured value showed $40^{\circ}$ PF (p<0.01). Conclusion: There are differences between males and females in isokinetic muscle strength of the knee extensor through ankle joint angles in healthy adults. Males and Females have different characteristics of muscle strength through the ankle joint angles.

Keywords

References

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