期刊
NUTRIENTS
卷 9, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/nu9121358
关键词
protein intake; protein distribution; aging; muscle strength; muscle power
资金
- German Ministry for Education and Research (BMBF) [01EA1409C]
- Deutsche Forschungsgemeinschaft
- Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU) within the funding programme Open Access Publishing
To maintain muscle mass in older age, several aspects regarding the amount and distribution of protein intake have been suggested. Our objective was to investigate single and combined associations of daily protein intake, evenness of protein distribution across the three main meals, number of meals providing 0.4 g protein/kg body weight (BW), and number of meals providing 2.5 g leucine, with muscle mass, strength, and power in successful agers. In this cross-sectional study in 97 healthy community-dwelling adults without functional limitations aged 75-85 years, protein intake was assessed using 7-day food records. Muscle mass, leg muscle strength, leg muscle power, and handgrip strength were measured according to standardized protocols. Mean daily protein intake was 0.97 +/- 0.28 g/kg BW and the coefficient of variance between main meals was 0.53 +/- 0.19. Per day, 0.72 +/- 0.50 meals providing 0.4 g protein/kg BW and 1.11 +/- 0.76 meals providing 2.5 g leucine were consumed. No correlations between single or combined aspects of protein intake and skeletal muscle index, leg muscle power, leg muscle strength, or handgrip strength were observed (Spearman's r of -0.280 to 0.291). In this sample of healthy older adults without functional limitations, aspects of protein intake were not associated with muscle mass, strength, or power.
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