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HYPERTROPHIC EFFECTS OF CONCENTRIC VS. ECCENTRIC MUSCLE ACTIONS – 2017


Brad J Schoenfeld et al
– Controversy exists as to whether different dynamic muscle actions produce divergent hypertrophic responses
PURPOSE
– Conduct a systematic review and meta-analysis of randomized controlled trials comparing the hypertrophic effects of concentric versus eccentric training in healthy adults following regimented resistance training (RT)
RESULTS
1. Eccentric actions resulted in a greater effect size (ES) compared to concentric actions, but results did not reach statistical significance
2. The mean % change in muscle growth across studies favored eccentric compared to concentric actions (10.0% vs 6.8, respectively)

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