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.

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 ...

Toolbox: Skeletal muscle cramps are highly prevalent in endurance sports and often affect cyclists during racing events when the intensity of physical exertion is very high and the duration is long.

Whereas actomyosin has a well-established role in the generation of muscle contractile forces, how microtubules contribute to muscle contraction is poorly understood. Robison et al. now reveal that ...

Staircase potentiation in skeletal muscle depends on an intensification of the twitch “active state” early in the contraction cycle. A working hypothesis of this is proposed.