Final answer:
The statement is false; in a concentric contraction, the muscle shortens, not lengthens, to produce movement.
Step-by-step explanation:
The statement 'In a concentric contraction, the muscle lengthens to produce movements' is False. In a concentric contraction, the muscle actually shortens as it generates force. When you think of a contraction, envision the biceps brachii muscle during a bicep curl: it shortens as you lift a weight. Conversely, an eccentric contraction involves the muscle lengthening while still generating force, such as when you carefully lower the hand weight back down.