Find out about the structure of your muscles and how they contract and relax.

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

By studying sarcomeres, the basic unit controlling changes in muscle length, scientists proposed the sliding filament theory to explain the molecular mechanisms behind muscle contraction.

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 ...

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.

Those who performed eccentric contractions showed the most substantial gains in strength — improvements ranged between 10 and 13 percent across all measured types of muscle contraction.

Researchers at UT Southwestern Medical Center have uncovered the detailed shape of a key protein involved in muscle contraction. The report, published today in Neuron, may lead to improved ...

Numerous motor and structural proteins compose a highly ordered structure known as the sarcomere, the basic unit of muscle contraction in heart and skeletal muscles. Sarcomeric myosin heavy chain ...