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ilovejustinbieber20
Muscular strength and endurance are key components to physical fitness. ...Muscular strength is defined as the ability of a muscle group to develop maximal contractile force against a resistance in a single contraction. Muscular endurance is the ability of a muscle group to exert submaximal force for extended periods.
bobbyhall1999
Muscular strength is defined as the ability of a muscle group to develop maximal contractile force against a resistance in a single contraction