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.

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a new study. The flow of water within a muscle fiber may dictate how quickly muscle can contract, ...

Increasing muscle temperature through warm-ups enhances contractile function and power, but maximum force remains unchanged, ...

Strength training involves different types of muscle contractions with unique benefits, according to a personal trainer. Eccentric exercise involves lengthening, helping increase muscle size by ...

A research group has uncovered important details about how platelet-activating factor (PAF)—a powerful molecule involved in inflammation and allergic reactions—triggers contractions in the smooth ...

Brian Glancy, a senior investigator in the Muscle Energetics Laboratory, researches how mitochondrial and contractile networks are optimized within muscle cells to maintain energy balance.