A concentric contraction is a type of muscle activation that causes tension on your muscle as it shortens. As your muscle shortens, it generates enough force to move an object. This is the most ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

POV: YOU’RE COMPLETING your final set of heavy bench presses, and the last rep of your set doesn’t quite make it all the way back to the rack. Two things likely happen: first, hopefully your spotter ...