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  • Title: Effects of nutrition supplementation and physical exercise on muscle mass, muscle strength and fat mass among sarcopenic elderly: a randomized controlled trial.
    Author: Li Z, Cui M, Yu K, Zhang XW, Li CW, Nie XD, Wang F.
    Journal: Appl Physiol Nutr Metab; 2021 May; 46(5):494-500. PubMed ID: 33216623.
    Abstract:
    This study aimed to determine the impact of nutrition supplementation (whey protein, fish oil, vitamin D) and physical exercise (resistance and aerobic exercise) on muscle mass, muscle strength and fat mass among sarcopenic elderly. Participants (N = 241) with sarcopenia (aged ≥ 60 y) enrolled from 2 centers were randomized into groups undergoing nutrition supplementation (Nutr), physical exercise (Ex), nutrition combined with exercise (Nutr+Ex), or routine consultation for 12 weeks. Muscle-related indicators, grip strength as well as fat-related indicators were compared pre- and post-intervention. The per-protocol analysis showed that all indicators were significantly different between groups (P < 0.001). Further pairwise comparisons showed that compared with controls, appendicular muscle mass and grip strength were significantly higher in Nutr (P < 0.001, 95% CI: 0.578, 1.475; P < 0.001, 95% CI: 3.614∼9.118), Ex (P = 0.010, 95% CI: 0.157, 1.153; P < 0.001, 95% CI: 2.904, 8.732), and Nutr+Ex (P < 0.001, 95% CI: 0.564, 1.471; P < 0.001, 95% CI: 3.441, 8.907) groups, while fat mass was significantly lower in the Nutr (P < 0.001, 95% CI: -4.676, -2.358) and Nutr+Ex (P < 0.001, 95% CI: -4.717,-1.790) groups. When compared with Ex, fat mass decreased significantly in the Nutr (P = 0.001, 95% CI: -4.856,-1.359) and Nutr+Ex (P = 0.005, 95% CI: -4.810, -0.878) groups. The findings indicate that nutrition supplementation and physical exercise could improve muscle mass, strength and fat mass among sarcopenic elderly. Nutrition supplementation might be better at decreasing fat mass in this population. ClinicalTrials.gov registration no.: NCT02873676. Novelty: Nutrition supplementation improved muscle mass, strength and fat mass among sarcopenic elderly. Aerobic and resistance exercise improved muscle mass and strength in sarcopenic elderly. Combined nutrition supplementation and physical exercise improved muscle mass, strength and fat mass among sarcopenic elderly.
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