Try out PMC Labs and tell us what you think. Learn More. This review article focuses on the changes that occur in muscle with age, specifically the involuntary loss of muscle mass, strength and function, termed sarcopenia. Particular emphasis is given to the metabolic alterations that characterize sarcopenia, and to the potentially treatable causes of this condition, including age-related endocrine and nutritional changes, and inactivity. Recent data reported include those regarding the potential role of insulin resistance in the development of sarcopenia, the potential role of androgens and growth hormone in the treatment of this condition, the usefulness of exercise including both resistance and aerobic training to improve muscle growth and function, and, finally, the possible use of nutritional manipulations to improve muscle mass. Sarcopenia is likely a multifactorial condition that impairs physical function and predisposes to disability.
Error: This is required. Error: Not a valid value. Along with swelling and varicose veins, leg cramps are a normal but sometimes uncomfortable part of pregnancy. Knowing what to do when you get a cramp and how to prevent cramps from happening can make your pregnancy a bit more comfortable. This article is about leg cramps only. To find out more about pelvic cramps, check out our article on pelvic pain in pregnancy , or speak with your doctor or midwife. Cramps are a sudden, sharp pain, usually in your calf muscles or feet. They usually happen at night and are more common late in your pregnancy.
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Learn more. Muscular dystrophy is a group of inherited diseases characterized by weakness and wasting away of muscle tissue, with or without the breakdown of nerve tissue. There are 9 types of muscular dystrophy, with each type involving an eventual loss of strength, increasing disability, and possible deformity.