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 mechanism of skeletal muscle contraction is a process that relies on calcium signaling. However, the physiological role ...

When you take a muscle through the full range of motion, it goes through three phases of muscle contraction: eccentric, isometric, and concentric. Placing more attention on one phase can yield ...

The origin is the end of a muscle which is attached to a fixed bone. The insertion is the other end of the muscle that is attached to the bone which moves. Muscular contractions are defined as the ...

Current medical imaging technology misses important data regarding muscle contraction, including the ways in which a muscle's shape changes when it contracts, how the muscle bulges, and how its ...

However, there could be many more because dystonia is one of the most widely underdiagnosed movement disorders. It is often ...

An athlete captured bizarre footage of his calf muscle moving by itself – in a scene reminiscent of a scarab attack in the film The Mummy. The involuntary contraction was caused by a severe cramp, ...

Medically reviewed by William Truswell, MD Esophageal spasms cause painful chest contractions and affect swallowing and digestion.Medications and peppermint oil can help relieve esophageal spasm ...