Key result
Low-load resistance training with blood flow restriction was inferior to high-load resistance training for muscle strength gains (SMD -0.33; 95% CI -0.49 to -0.18; p<0.0001).
Why the study?
To examine the efficacy of low-load resistance training with blood flow restriction compared with high-load resistance training on muscle strength and hypertrophy, and explore factors affecting outcomes.
Does low-load resistance training with blood flow restriction improve muscle strength and hypertrophy compared to high-load resistance training in untrained males?
Meta-Analysis
Does low-load resistance training with blood flow restriction improve muscle strength and hypertrophy compared to high-load resistance training in untrained males?
Standardized Mean Difference: -0.33 (95% CI -0.49–-0.18)
p-value: p=< 0.0001
LL-BFR is inferior to HL-RT for muscle strength gains overall, but achieves comparable strength gains under optimized conditions and similar muscle mass gains, making it a viable alternative for those unable to perform HL-RT.
Authors
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Supports LL-BFR as alternative when HL-RT infeasible; extends meta-analytic evidence for comparable hypertrophy.
Chang et al. (2024) conducted a meta-analysis in Untrained males. Low-load resistance training with blood flow restriction (LL-BFR) vs. High-load resistance training (HL-RT) was evaluated on Muscle strength gains (SMD -0.33, 95% CI -0.49 to -0.18, p=< 0.0001). Low-load resistance training with blood flow restriction was inferior to high-load resistance training for muscle strength gains (SMD -0.33; 95% CI -0.49 to -0.18; p<0.0001).
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