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.
Study Goal
The researchers aimed to determine whether a whey protein supplement enriched with leucine, combined with resistance training, improved muscle mass and strength in post-hospitalized elderly individuals.
Results Summary
Both the protein supplementation and placebo groups showed improvements in physical function after 12 weeks of resistance training, but the abstract does not specify whether leucine-enriched supplementation provided additional benefits over placebo.
Population
Post-hospitalized elderly individuals.
Effective Dosage
Not specified in the abstract.
Duration
12 weeks.
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
resistance training | decrease | age-related strength and muscle mass loss | - | - | has been proposed as an effective countermeasure | #1 |
a whey protein supplement enriched with leucine after resistance training | increase | muscle mass and strength gains | a post-hospitalized elderly population | - | the effect of | #2 |
resistance training | increase | physical function | 28 participants | - | improvements in | #3 |
protein supplementation following resistance training | increase | physical function | 28 participants | - | improvements in | #4 |
placebo supplementation following resistance training | increase | physical function | 28 participants | - | improvements in | #5 |
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 (