After the age of 40, adults may lose up to 8% of muscle mass per decade. 1-4 The process then accelerates substantively after 70 years of age, where the rate of muscle loss almost doubles to up to 15% per decade.1,2,5
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3. Newman AB, Lee JS, Visser M, et al. Weight change and the conservation of lean mass in old age: the Health, Aging and Body Composition Study. The American Journal of Clinical Nutrition. October 1, 2005 2005;82(4):872-878.
4. Forbes GB. Longitudinal changes in adult fat-free mass: influence of body weight. The American Journal of Clinical Nutrition. December 1, 1999 1999;70(6):1025-1031.
5. Grimby G, Danneskiold-Samsøe B, Hvid K, Saltin B. Morphology and enzymatic capacity in arm and leg muscles in 78-81 year old men and women. Acta physiologica Scandinavica. 1982;115(1):125-134.
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