Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis
- PMID: 27433992
- DOI: 10.1080/02640414.2016.1210197
Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis
Abstract
The purpose of this paper was to systematically review the current literature and elucidate the effects of total weekly resistance training (RT) volume on changes in measures of muscle mass via meta-regression. The final analysis comprised 34 treatment groups from 15 studies. Outcomes for weekly sets as a continuous variable showed a significant effect of volume on changes in muscle size (P = 0.002). Each additional set was associated with an increase in effect size (ES) of 0.023 corresponding to an increase in the percentage gain by 0.37%. Outcomes for weekly sets categorised as lower or higher within each study showed a significant effect of volume on changes in muscle size (P = 0.03); the ES difference between higher and lower volumes was 0.241, which equated to a percentage gain difference of 3.9%. Outcomes for weekly sets as a three-level categorical variable (<5, 5-9 and 10+ per muscle) showed a trend for an effect of weekly sets (P = 0.074). The findings indicate a graded dose-response relationship whereby increases in RT volume produce greater gains in muscle hypertrophy.
Keywords: Exercise volume; cross sectional area; hypertrophy; muscle growth; skeletal muscle.
Comment in
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Reliability of meta-analyses to evaluate resistance training programmes.J Sports Sci. 2017 Oct;35(20):1982-1984. doi: 10.1080/02640414.2016.1243799. Epub 2016 Nov 4. J Sports Sci. 2017. PMID: 27809704 No abstract available.
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