How is eccentric contraction described?

• A. Muscle shortens while maintaining tension
• B. No tension is present in the muscle
• C. Muscle lengthens as it maintains tension
• D. Muscle is inactive

Answer: (C)

Eccentric contraction is accurately described as a scenario where the muscle lengthens while maintaining tension. This type of muscle contraction occurs when the force applied to the muscle exceeds the force generated by the muscle itself, resulting in elongation despite the muscle being activated.

For instance, when lowering a weight during a bicep curl, the biceps perform an eccentric contraction. Although the muscle is working to control the descent of the weight, it is getting longer. This action is vital for muscle development, as it creates muscle tension and can lead to greater strength gains.

In contrast, the other answer options fail to represent the characteristics of eccentric contraction effectively. Muscle shortening while maintaining tension refers to concentric contractions, while the absence of tension or inactivity describes a state where the muscle is not engaged, and thus does not apply to any type of contraction.