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.

Progressive muscle relaxation is a technique of sequential contraction and relaxation of the muscles of the body from head to toe. It is easy for patients to learn and can be an important adjunctive ...

Micro-organisms in the gut support healthy digestion by helping nerve cells within the intestine to regulate the contraction and relaxation of the muscle wall of the colon, according to new research ...

As skeletal muscle comprises 30–40% of body mass, the altered basal metabolic rate in patients with thyroid hormone excess or deficiency is largely due to changes in skeletal muscle energy turnover ...

When labor begins, the uterus must coordinate rhythmic, well-timed contractions to deliver the baby safely. While hormones such as progesterone and oxytocin are key contributors to that process, ...

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 ...