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.

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Myopathy is a general term for diseases that affect your muscles. The muscle fibers don’t work properly, which leads to muscle weakness and other symptoms. Some myopathy is inherited and present at ...

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Neuromuscular disorders affect nerves that control voluntary muscles, including those in your arms, legs, and face. Nerve damage can lead to muscle weakness and loss of control. Examples of ...

Objective To determine how distinct combinations of resistance training prescription (RTx) variables (load, sets and frequency) affect muscle strength and hypertrophy. Data sources MEDLINE, Embase, ...

Hamstring injuries (HSIs) are the most common athletic injury in running and pivoting sports, but despite large amounts of research, injury rates have not declined in the last 2 decades. HSI often ...