EHS 230 Lecture Notes - Lecture 10: Myocyte, Pinnation, Neural Coding
13 Mar 2017
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Document Summary
Strength- able to apply force and do work. Work- result of force on object + distance object travels. Velocity- change in item"s position over period of time. Power- rate of work and time it takes to do work. Powerlifting- high force and low speed of movement applied. Rate coding- rate motor units are going at. Neural adaptations responsible for muscle increase in 1st weeks of lifting. Force muscle produces depends on cross sectional area. Tall athletes have more muscle volume but short athletes can develop volume. Pennation angle- angle in between muscle fiber and line b/w origin and insertion. Pinnate muscle- soft looking construction of fibers. Muscle length- resting muscle can generate more force because actin and. Increases muscle force production and contraction at high speed. Not good for eccentric, isometric or contraction at small speed myosin are at good position to contract. Stretched muscle has passive force production capability because it is.
