Kinesiology 2241A/B Study Guide - Midterm Guide: Vertebral Column, Coccyx, Anthropometry
10 Dec 2012
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Document Summary
Kinetics= forces that cause movement: examples buoyancy, centripetal, friction, pressure, gravity etc. Kinematics = describing that movement: described in m/sec, degrees/sec, acceleration is a change in velocity or a change in direction, displacement is described in metres or degrees, momentum is m = mv. An efficient movement is one where there is minimal energy expenditure, which is useful in endurance sports. The performer is able to perform faster, with less energy expended. An effective movement is not concerned with efficiency- the only concern is making the most appropriate movements to achieve the mechanical purpose (mp), and obtain your overall. In other words, you just move appropriately for the situation to get what/where you want. Vertebral column (vc: 7 cervical, 12 thoracic, 5 lumbar, 4 coccyx, sacrum. Functions of the skeleton: protect vital organs, support soft tissues, manufacture rbcs, reservoir for minerals, attachments for muscles, levers and pulleys to create muscle torques. Physical stress on bones: compression, tension, torsion, shear.
