Abstract
Muscle strength plays an important role in determining risk for falls, which result in fractures and other injuries. While bone loss has long been recognized as an inevitable consequence of aging, sarcopenia—the gradual loss of skeletal muscle mass and strength that occurs with advancing age—has recently received increased attention. A review of the literature was undertaken to identify nutritional factors that contribute to loss of muscle mass. The role of protein, acid–base balance, vitamin D/calcium, and other minor nutrients like B vitamins was reviewed. Muscle wasting is a multifactorial process involving intrinsic and extrinsic alterations. A loss of fast twitch fibers, glycation of proteins, and insulin resistance may play an important role in the loss of muscle strength and development of sarcopenia. Protein intake plays an integral part in muscle health and an intake of 1.0–1.2 g/kg of body weight per day is probably optimal for older adults. There is a moderate inverse relationship between vitamin D status and muscle strength. Chronic ingestion of acid-producing diets appears to have a negative impact on muscle performance, and decreases in vitamin B12 and folic acid intake may also impair muscle function through their action on homocysteine. An adequate nutritional intake and an optimal dietary acid–base balance are important elements of any strategy to preserve muscle mass and strength during aging.
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The Nutrition Working Group of the IOF Committee of Scientific Advisors was supported by the International Osteoporosis Foundation. The help received from Maria Beloyartseva and Parjeet Kaur in the referencing is gratefully acknowledged.
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Authors A. Mithal and J.-P. Bonjour contributed equally to the manuscript
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Mithal, A., Bonjour, JP., Boonen, S. et al. Impact of nutrition on muscle mass, strength, and performance in older adults. Osteoporos Int 24, 1555–1566 (2013). https://doi.org/10.1007/s00198-012-2236-y
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DOI: https://doi.org/10.1007/s00198-012-2236-y