What is an easy way to identify a concentric contraction? A. A concentric contraction moves towards the earth
B. A concentric contraction moves all over
C. A concentric contraction moves towards the ceiling
D. A concentric contraction involves multiple movements.

i would say i could be A concentric contraction involves multiple movements.

As your muscle shortens, it generates enough force to move an object. This is the most popular type of muscle contraction. In weight training, a bicep curl is an easy-to-recognize concentric movement. When you lift a dumbbell toward your shoulder, you may notice your bicep muscle swell and bulge as it shortens.

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so what is your question?