Wednesday, September 25, 2013

Important General Terms 2

Today's terms are muscle actions. These terms include: isotonic, eccentric, concentric, isometric, and isokinetic.

Isotonic - force is produced, muscle tension is developed, and movement occurs through a given range of motion. It includes two phases: eccentric and concentric phases.

Eccentric - moving in the same direction as the resistance, decelerates or reduces force

Concentric - moving in opposite direction of the force, accelerates or produces forces

Isometric - no visible movement with or against resistance, dynamically stabilizes force

Isokinetic - the speed of movement is fixed, and resistance varies with the force exerted. Requires sophisticated training equipment often seen in rehabilitation of exercise physiology laboratories.

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