Effects of Leucine-Enriched Whey Protein Supplementation on Physical Function in Post-Hospitalized Older Adults Participating in 12-Weeks of Resistance Training Program: A Randomized Controlled Trial

被引:35
作者
Amasene, Maria [1 ]
Besga, Ariadna [2 ]
Echeverria, Inaki [3 ]
Urquiza, Miriam [3 ]
Ruiz, Jonatan R. [4 ]
Rodriguez-Larrad, Ana [3 ]
Aldamiz, Mikel [2 ]
Anaut, Pilar [2 ]
Irazusta, Jon [3 ]
Labayen, Idoia [5 ]
机构
[1] Univ Basque Country, Dept Pharm & Food Sci, UPV EHU, Vitoria 01006, Spain
[2] Univ Basque Country, Araba Univ Hosp, CIBERSAM, Dept Med,Bioaraba Res Inst,UPV EHU,OSI Araba, Vitoria 01004, Spain
[3] Univ Basque Country, Dept Physiol, UPV EHU, Leioa 48940, Spain
[4] Univ Granada, PROFITH PROmoting FITness & Hlth Phys Act Res Grp, Sport & Hlth Univ Res Inst iMUDS, Dept Phys Educ & Sport,Fac Sport Sci, E-18071 Granada, Spain
[5] Univ Publ Navarra, Inst Innovat & Sustainable Dev Food Chain IS F, ELIKOS Grp, Pamplona 31006, Spain
关键词
elderly; aging; muscle mass; strength; resistance training; leucine; whey protein; protein supplementation; MUSCLE MASS; DOUBLE-BLIND; BODY-COMPOSITION; DIETARY-PROTEIN; EXERCISE; VALIDATION; SARCOPENIA; RECOMMENDATIONS; PERFORMANCE; IMPAIRMENT;
D O I
10.3390/nu11102337
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Age-related strength and muscle mass loss is further increased after acute periods of inactivity. To avoid this, resistance training has been proposed as an effective countermeasure, but the additional effect of a protein supplement is not so clear. The aim of this study was to examine the effect of a whey protein supplement enriched with leucine after resistance training on muscle mass and strength gains in a post-hospitalized elderly population. A total of 28 participants were included and allocated to either protein supplementation or placebo supplementation following resistance training for 12 weeks (2 days/week). Physical function (lower and upper body strength, aerobic capacity and the Short Physical Performance Battery (SPPB) test), mini nutritional assessment (MNA) and body composition (Dual X-ray Absorptiometry) were assessed at baseline and after 12 weeks of resistance training. Both groups showed improvements in physical function after the intervention (p < 0.01), but there were no further effects for the protein group (p > 0.05). Muscle mass did not improve after resistance training in either group (p > 0.05). In conclusion, 12 weeks of resistance training are enough to improve physical function in a post-hospitalized elderly population with no further benefits for the protein-supplemented group.
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页数:15
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