| Closed Kinetic Chain: exercises performed with the distal end fixed in space.
Open Kinetic Chain: exercises performed with the distal end of the limb terminating freely in space. Isotonic: muscle contraction which causes a joint to move through some ROM. Resistance remains constant while muscle length continuously changes.
Isokinetic: muscle contraction at a constant rate of speed. Isometric: muscle contraction that produces force without change in the associated joint angle Knee
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