| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
The purpose of this study was to clarify the following question; which parameters contribute to the stretch-shortening cycle effect focused on the tendon elongation, preactivation, active-lengthening induced force potentiation. To archive this purpose, we set following three steps. First, muscle contraction was evoked by electrical stimulation to discard the influence of neural activity. Second, we compared the stretch-shortening cycle effect between “muscle with tendon” and “muscle without tendon” while the other factors were constant. Finally, we compared the extent of stretch-shortening cycle effect between “active-lengthening” and “no active-lengthening” conditions. As a result, even without tendon, substantial stretch-shortening cycle effect occurred, indicating that the contribution of tendon elongation is small. Second, both preactivation and residual force enhancement contribute to stretch-shortening cycle effect.
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