Effectiveness of Protein Supplementation Combined with Resistance Training on Muscle Strength and Physical Performance in Elderly: A Systematic Review and Meta-Analysis.
Study Goal
The researchers aimed to evaluate the effectiveness of resistance training (RT) combined with protein supplementation (PS) compared to RT alone or with a placebo in improving muscle strength and physical performance in elderly individuals.
Results Summary
The meta-analysis found no statistical differences in upper-limb strength between RT combined with PS and RT alone or with a placebo. Secondary outcomes related to physical performance (SPPB, gait speed, 5CRT) were not fully detailed in the abstract.
Population
Healthy elderly individuals (>60 years)
Effective Dosage
Not specified
Duration
Not specified
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
resistance training (RT) and protein supplementation (PS) | increase | muscle strength and physical performance | healthy elderly (>60 years) | - | improvement | #1 |
resistance training (RT) and protein supplementation (PS) | no change | upper-limb strength | healthy elderly (>60 years) | SMD: 0.56, 95% CI: -0.09, 1.21 | no statistical differences | #2 |
The aim of this study was to evaluate the effectiveness of the combination of resistance training (RT) and protein supplementation (PS), compared to RT alone or combined with a placebo (plS), in the improvement of muscle strength and physical performance. The search strategy in PubMed, Cochrane Library, and Web of Sciences databases found a total of 294 studies. Once inclusion and exclusion criteria were applied, 16 studies were included for the qualitative analysis. A total of 657 healthy elderly (>60 years) participants were analysed. Finally, 15 articles were included in the quantitative analysis with one being excluded due to issues with data availability. Upper-limb, lower-limb, and handgrip strength were the primary outcomes of the meta-analysis. The secondary outcomes, related to physical performance, were Short Physical Performance Battery (SPPB), gait speed, and the five-chair-rise test (5CRT). The main results of the meta-analysis show no statistical differences for upper-limb (SMD: 0.56, 95% CI: -0.09, 1.21,