Effectiveness of Nutritional Supplementation on Muscle Mass in Treatment of Sarcopenia in Old Age: A Systematic Review |
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Authors: | Vincenzo Malafarina Francisco Uriz-Otano Raquel Iniesta Lucía Gil-Guerrero |
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Affiliation: | 1. Department of Geriatrics, Hospital San Juan de Dios, Pamplona, Spain;2. Department of Internal Medicine, Hospital San Juan de Dios, Pamplona, Spain;3. Servicio de soportes estadístico, Fundació per a la recerca Sant Joan de Deu, Barcelona, Spain |
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Abstract: | BackgroundMuch interest has been focused on nutritional treatment of sarcopenia, loss of muscle mass and performance associated to aging; however, its benefits are unclear.ObjectiveTo analyze the relevance of nutritional treatment of sarcopenia and assess the effects of supplementation on muscle mass and function within the aged population.MethodsWe 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.ResultsWe 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.ConclusionNutritional 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. |
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