KINE 409 Lecture Notes - Lecture 8: Vastus Lateralis Muscle, Vertical Jump, Anatomical Terms Of Motion

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5 Feb 2017
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More true power test than a sprint on a level terrain. Time can be measured electronically as the time in air from an electronic contact mat attached to a special timer. Although vj has been called an explosive strength test. It is not a true strength measure b/c. Maximal muscle force is not elicited despite the maximal jump effort. Correlation b/t strength & vj have been variable. Vj correlated moderately high (r = 0. 74; 0. 81) Moderate (r = 0. 4 to 0. 6) correlations b/t strength & jumping. Ability to use these phosphagen stores at a rapid rate. Although the % ft fibers in vastus lateralis is significantly related (r = 0. 48) to jump ht. Correlation may not be high enough to have physiological relevance. Type of vj influences the ultimate vertical distance jumped. Added force from elastic recoil of tissue. Enhanced muscle fiber recruitment due to stretch reflex. You cannot dismiss the contribution of the arms.

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