eccentric contractions are more forceful

Eccentric contractions are a type of muscle contraction where the muscle lengthens under tension, typically occurring when the muscle is acting to control or decelerate a movement. This form of contraction is opposed to concentric contractions, where the muscle shortens, and isometric contractions, where the muscle length remains the same. Eccentric contractions are common in activities involving lowering weights, such as the downward motion of a bicep curl or the deceleration phase of running downhill.