Muscle tone
Continuous and passive partial contraction of the muscles / From Wikipedia, the free encyclopedia
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For the use of the term "tone" in weight training and bodybuilding, see Toning exercises.
In physiology, medicine, and anatomy, muscle tone (residual muscle tension or tonus) is the continuous and passive partial contraction of the muscles, or the muscle's resistance to passive stretch during resting state.[1] It helps to maintain posture and declines during REM sleep.[2] Muscle tone is regulated by the activity of the motor neurons and can be affected by various factors, including age, disease, and nerve damage.
This article relies largely or entirely on a single source. (June 2013) |