| Autor: |
Polito MD; Physical Education Department, State University of Londrina, Londrina, PR Brazil., Papst RR; Physical Education Department, State University of Londrina, Londrina, PR Brazil., Farinatti P; Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, Brazil.; Graduate Program in Physical Activity Sciences, Salgado de Oliveira University, Rio de Janeiro, Brazil. |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of sports sciences [J Sports Sci] 2021 Oct; Vol. 39 (19), pp. 2189-2198. Date of Electronic Publication: 2021 May 12. |
| DOI: |
10.1080/02640414.2021.1924978 |
| Abstrakt: |
This meta-analysis investigated the role of resistance training (RT) moderators on strength and muscle mass gains in untrained young (YG) and older (OG) adults. Electronic databases were searched for randomised controlled trials simultaneously assessing muscle strength and mass. Effect sizes (ES) reflecting improvements in strength and muscle mass were found for all moderators in YG and OG (ES 0.25- to 1.72; p < 0.05), excepting muscle mass in YG after RT was performed with <3 sets/exercise. Strength gains ( p < 0.001) were greater in non-periodised vs . periodised RT in YG (ES 1.72 vs . 1.05) and OG (1.40 vs . 0.74). ES in OG was greater ( p < 0.04) when RT included non-failure vs . failure repetitions (1.35 vs . 0.96), 3 vs . >3 sets/exercise (1.30 vs . 0.90), ≥3 vs . <3 days/week (1.70 vs . 0.78), and ≥12 vs . <12 weeks (1.48 vs . 0.92). Amoderating effect of RT factors on muscle mass was not detected in YG, while greater ES was found in OG for RT with ≥3 vs . <3 days/week (0.50 vs. 0.25). Concluding, different combinations of RT factors improved strength and muscle mass in YG and OG. In OG, this was favoured by greater frequency and duration, although hampered by excessive volume. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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