The Claim
After 10 weekly sessions of eccentric exercise in healthy young men, the repeated bout effect results in a complete absence of residual elevation in creatine kinase, C-reactive protein, and delayed onset muscle soreness compared to baseline levels and to levels observed after concentric exercise.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If you do the same tough muscle workout (like lowering weights slowly) once a week for 10 weeks, your muscles stop getting sore and stop showing signs of damage—even compared to easier workouts—because your body gets used to it.
See the scientific wording
The repeated bout effect—progressive reduction in muscle damage biomarkers after repeated eccentric exercise—is fully established after 10 weekly sessions in healthy young men, with no residual elevation in creatine kinase, C-reactive protein, or delayed onset muscle soreness compared to baseline or concentric exercise.
What the research says
1 studyStudy: Eccentric exercise per se does not affect muscle damage biomarkers: early and late phase adaptations
The study measured biomarkers weekly and found complete normalization by week 10, indicating a clear adaptation timeline. This provides a specific duration for the repeated bout effect in this population.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.