Kinesiology 3341A/B Lecture Notes - Lecture 1: Dislocated Shoulder, Momentum, Greater Trochanter
13 Dec 2019
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Moment: a tendency for something to rotate cause something to rotate (ie. muscles exert moments on joints, and as a result we move) Torque: a tendency for something to twist/torsion (ie. skiing and your leg twists when you hit a jump wrong) Impulse: force over a period of time impulse changes momentum (ie. linear impulse changes linear momentum) The crane has parts of it that are under compression and tension rope is under tension and the base holding the rope is under compression. Muscles don"t push, they can only concentrically and eccentrically contract. The glute med (running from greater trochanter up) can be compared to the rope of the crane (under tension) In a high beam, the top and bottom of the t is to prevent bending and the webbing is designed to bear bending (just like our bones!) Bad recovery/healing examples: shoulder dislocation, tissues that are avascular (no blood supply- ie. meniscus, intervertebral discs, cauli ower ears)
