KINE 3030 Lecture Notes - Lecture 2: Ground Reaction Force, Free Body Diagram, Angular Velocity
17 Feb 2017
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One has to get longer and the other gets shorter. (cid:494)agonist muscle has to be on(cid:495) **moment arm joint angle muscle str (cid:523) ma x f (cid:524) (cid:884) forces little more then 9(cid:882) Stabilizer are muscles that pull joints together and usually keeps them more stable. Stretch shortening cycle; you need to have an eccentric then a concentric. The jump need to have cross bridge (force). Moment arm depends on your posture, length of actual muscle depends on your posture. Force length curve is optimal (certain posture have different strengths) Active insufficiency = muscle to short ( common in 2 joint muscles ex hand) Irritability comes from 2 thinks; # of motor units recruited & firing rate. # of sarcomeres in a line say how much stretchy motion you get. Fiber architecture; how to take all those sarcomes and line them up into the muscle really effects force output.
