am doing an experiment where I am test muscle fatigue in both your dominant and no dominant arm. So going to do 5 sets of fifty squeezes using a ball and record the amount of time it takes to get to fifty squeezes as fast as I can without rest between sets. My hypothesis is that the non dominant arm will get more fatigued faster than my dominant arm. My question would be I am confused as to what the independent and dependent variable would be.

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.