An individual picks up a cup and drinks from it. this is an example of a. a concentric contraction because muscles cause the elbow joint and arm to move b. an eccentric contraction because the release of the muscle in the back of the arm causes the elbow to bend c. an isometric contraction because the cup was stationary until the hand picked it up d. a midcentric contraction because the movement took place around the core of the body

Answer;

A. a concentric contraction because muscles cause the elbow joint and arm to move

Explanation;

Isotonic contractions generate force by changing the length of the muscle and can be concentric contractions or eccentric contractions.

A concentric contraction causes muscles to shorten, thereby generating force. Eccentric contractions cause muscles to elongate in response to a greater opposing force.

An example of a concentric contraction in the raising of a weight during a bicep curl. In concentric contractions, the force generated by the muscle is always less than the muscle's maximum