Kinesiology 2230A/B Lecture Notes - Lecture 27: Muscle Contraction, Myocyte, High Force
19 Oct 2018
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With increasing velocity, the force the can be generated decreases. The faster the muscle is shortening, less time to make cross bridges force velocity: As velocity decreases, amount of force increases. Continue into eccentric contraction, continue to generate more force as velocity lengthening increases. Lengthening contraction, tearing cross bridges apart in eccentric. Smaller platters able to block larger doing eccentric and larger doing concentric. If an eccentric contraction is followed by a concentric contraction there will be grater force generated during the concentric- jumping. Period of lengthening before concentric contraction in jumping. Can generate greater forces eccentrically- high force sustained in initial moments of concentric contractions (when muscle begins to shorten, maintains eccentric force being generated in first few moments of concentric contraction) length tension: When muscle fibre length is at max, will have fewest number of cross bridges being formed. As the muscle shortens, actin begins to overlap more and more with the myosin.
