Isometric Contraction= muscle increases in tension, no movement at the joint, muscle is moving while contracting,no visable shortening or lengthening.
Example: holding a barbell with the elbows flexed at 90 degree. (biceps contract isometrically)
Concentric Contraction= muscle shortens under tension, movement is produced around a joint, force exerted is greater than the resitance, muscle shortens while contracting.
Example: upwards phrase of a bicep curl (Bicep Brachii contract concentrically)
Eccentric Contraction= muscle lengthens under tension, helps control movement at a joint, force exerted is less then the resistance, muscle lengthens while contracting.
Example: downwards phase of a bicep curl.
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