Journal
JOURNAL OF THE AMERICAN MEDICAL DIRECTORS ASSOCIATION
Volume 14, Issue 1, Pages 10-17Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jamda.2012.08.001
Keywords
Sarcopenia; oral supplement; muscle mass; fat-free-mass
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Background: Much interest has been focused on nutritional treatment of sarcopenia, loss of muscle mass and performance associated to aging; however, its benefits are unclear. Objective: To analyze the relevance of nutritional treatment of sarcopenia and assess the effects of supplementation on muscle mass and function within the aged population. Methods: We searched Medline and the Cochrane Library for controlled trials published between 1991 and 2012. We have assessed the quality, type of intervention, the cohort used, the way muscle mass was measured, and the outcomes of the various studies. Results: We have included 17 studies, with a total of 1287 patients, aged between 65 and 85 on average. An improvement in muscle mass was proven, whether measured with bioelectrical impedance analysis or dual energy x-ray absorptiometry, and an improvement in strength was also proven. Conclusion: Nutritional supplementation is effective in the treatment of sarcopenia in old age, and its positive effects increase when associated with physical exercise. The main limitation of this treatment is lack of long-term adherence. A healthy diet associated with a physically active lifestyle and possibly with aerobic exercise are the basis of healthy aging, which is the aim of all doctors treating aged people must seek. Copyright (C) 2013 - American Medical Directors Association, Inc.
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