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Rights: The University of Waikato Published 21 June 2007 Size: 320 KB

There are three major factors that affect how well your muscles perform – strength, power and endurance.

Strength describes the maximum force a muscle can exert. The power of muscles refers to how quickly the muscles can do this work and transfer the energy. Muscle endurance refers to how well the muscles can exert and hold maximum force over and over and over again.