Research
Cellular
Both eccentric and concentric actions are effective in increasing muscle hypertrophy.
Incorporating both types of muscle actions can enhance hypertrophy outcomes.
StrongSupportsmedium confidence
The findings indicate the importance of including eccentric and concentric actions in a hypertrophy-oriented RT program, as both have shown to be effective in increasing muscle hypertrophy.
Why this rating
Based on systematic review and meta-analysis of randomized controlled trials.
Source
Hypertrophic Effects of Concentric vs. Eccentric Muscle Actions: A Systematic Review and Meta-analysis
Brad J. Schöenfeld et al. · The Journal of Strength and Conditioning Research · 2017
DOI 10.1519/jsc.0000000000001983
Meta-analysisCited 128×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Eccentric muscle actions resulted in a greater effect size compared with concentric actions, but results did not reach statistical significance (ES difference = 0.25 ± 0.13; p = 0.076).Strong
- The mean percent change in muscle growth favored eccentric compared with concentric actions (10.0% vs. 6.8%).Strong
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