Concurrent training interference effect on muscle hypertrophy and strength: a meta-analysis
Wilson JM, et al.
High-confidence evidence from multiple solid studies
Summary
A meta-analysis evaluating the interference effect of concurrent training (resistance + aerobic training in the same session or same day) on muscle hypertrophy, strength, and explosive power. Concurrent training in the same session or same day produced significantly lower gains in hypertrophy, strength, and explosive power compared to resistance training alone, with lower limb hypertrophy particularly affected.
Key findings
- 1
Same-day concurrent training tends to reduce hypertrophy by 31% and explosive power by 23% compared to resistance training alone
- 2
Interference is greater in lower limbs (quadriceps, hamstrings) and smaller in upper limbs
- 3
Aerobic modality matters: running produces greater interference than cycling
- 4
Same-day ordering of resistance before aerobic training may minimize interference
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