<span>An example of concentric contraction is doing a biceps curl. The curl exercise is targeting the biceps muscles on the front of the upper arm and only several muscles assist during the movement. Moreover, concentric muscle contraction is a type of muscle activation that increases the tension on a muscle as it shortens and this activation begins the process of muscle strengthening and hypertrophy. </span>
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I think fiber............
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Sorry I don't understand the question nicely.
<u>The forces are balanced so no motion occurs.</u>
There'll be no change in the state of an object if the forces are balanced.
