Kinesiology 4430F/G Lecture Notes - Lecture 7: Motor Unit, Myofibril, Unit
15 Jun 2016
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Pennation angle change in the muscle and the fascicle length change in the muscle. As time to fatigue increased, the muscle had a greater pennation angle transiently. Water concentration increases and muscle gets swollen. As the pennation angle increases how does this affect force: losing force when increasing angle. Motor unit level: muscle wisdom: reduce firing rates appropriate for slowed muscle. Compensation to reduce energy need or requirement from the whole system: submaximal contractions: rotate mus during activity. Might not change the order, but you can use this 10%, put them to rest, then grab a different 10% Share the load among synergists and modify agonist input (inhibit) Train the system to adapt to better handle the exercise ( get in better shape train your body to be used to the demand and become more efficient with it) Acute situation: seconds to minutes to adapt (potentiation, fatigue, drugs: quickly reversible.
