KIN 3309 Lecture Notes - Lecture 1: Ground Reaction Force, Statics, Blood Cell
17 Jan 2017
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Mechanics - (cid:862)study of the forces a(cid:374)d e(cid:374)ergy o(cid:374) particles a(cid:374)d (cid:373)echa(cid:374)ical syste(cid:373)s(cid:863) Biomechanics applies principles of mechanics to the study of human movement: kinematics special and temporal characteristics of motion. **forces causing motion are not considered*: kinetics deals with the cause of motion (force) Functions of the skeleton: leverage, support, protection, storage, blood cell formation. Functions of muscles: produce movement, maintain posture and position, stabilize joints, support/protect, alter and control pressure, maintain temperature, control entrance/exits of the body. Linear vs. angular: force/torque, displacement/angle, velocity/angle of velocity, acceleration/angular acceleration, mass/moment of inertia. Forces: points of application origin and insertion of muscles, lines of action action along those points, n = kg x m/s^2. Ground reaction force (grf: force exerted by ground on a body. Joint reaction force: force experienced by a joint. Inertial force: force opposite in direction to an accelerating force. Muscle force: force when muscle fibers generate tension.
