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Activation of the Triceps Surae During Heel Raising Depend on the Knee Joint Flexion Angles

  • Journal of the Korean Society of Physical Medicine
  • Abbr : J Korean Soc Phys Med
  • 2013, 8(4), pp.497-503
  • Publisher : The Korean Society of Physical Medicine
  • Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy

권유정 1 Song, Min-Young 2

1부산슬링 운동 센터
2동의과학대학교

Candidate

ABSTRACT

Purpose : The purpose of this study was to investigate the change of triceps surae activation during heel raise test in standing among knee flexion angles(0°, 30°, 45°,60°). Methods : Twenty healthy individuals performed unilateral plantarflexion in standing with 0°, 30°, 45°, 60° knee flexion. Activity of medial gastrocnemius(MG), lateral gastrocnemius(LG), soleus(Sol) was recorded with surface electromyography(EMG). Result : The muscle activations induced the four different positions were compared and results showed that was significant difference MG and LG while the angle increase from 0° to 30°, 45°, 60° but Sol did not show significant differences in every angle. Conclusion : This study suggest that 30° knee flexion is required to induce a significant mechanical disadvantage of gastrocnemius.

Citation status

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