Kinesiology 2230A/B Lecture 4: Muscle

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2230A/B
• Professor: Glen Belfry

Document Summary

Faster you are moving; the harder you hit the water. In 1st second you travel 9. 8 sec; in 2nd second it is squared (travel further) Whole body contractions when they hit the trampoline and explode up. Recover form the jump aerobically when in the air. Spins, flips and somersaults are performed at high velocities. Centrifugal force is trying to pull them apart thus require a lot of core strength and energy o. Force that draws a rotating body away from the center of rotation. Concentric as velocity decreases, amount of force generated increases. Eccentric continue to generate more and more force as velocity of lengthening increases. Formed cross bridge, in lengthening, tearing cross bridges apart. Thus muscles are stronger when lengthening (eccentrically) then shortening (concentrically) Defense (pushing) is generating shortening contractions (concentric) thus they are generating less force. Offence (being pushed) is generating lengthening contractions (eccentric) thus they are able to generate more force.