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.

In a serendipitous discovery, UC San Diego researchers using cryo-EM technology captured the first visualizations of the 3-D structure of the muscle acetylcholine receptor in fetal and adult muscles.

Actomyosin is a protein complex composed of actin and myosin. It is found in muscle fibers where it plays a role in muscle contraction. Actin is one of the most abundant proteins in eukaryotes. It ...

1 School of Exercise Science, Australian Catholic University, Melbourne, Victoria, Australia 2 School of Exercise and Nutrition Sciences and Institute of Health and Biomedical Innovation, Queensland ...

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Anglo-European College of Chiropractic, Bournemouth, United Kingdom. OBJECTIVE--To determine the relation between the vibromyographic (VMG) frequency characteristics and fibre composition in postural ...