MEDI2008 Lecture 3: PACS_3
24 Jul 2019
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The maximal force a muscle or muscle group can exert at a specific velocity of contraction. The decline in muscle tension or force capacity with repeated stimulation or during a given time period. As the velocity of a concentric muscle action increases, the maximum force able to be produced decreases. Eccentric muscle actions the muscle absorbs energy produced by the external load. Can produce more force that concentric and isometric muscle actions. Force is independent of the velocity of contraction. Answer: actin myosin cross bridge connections occur at a set rate. If the velocity of contraction is faster than that rate then less cross bridges form, therefore force is decreased. Rapid energy supply phospho-creatine (pcr) supplies effective glycolytic metabolism effective oxidative recovery system. Rapid, appropriate activation recruitment of high threshold motor units training requires maximal effort rapid firing of mns ballistic power training synergist coordination decreased co-activation of antagonists muscle environment.
