The Claim
The repeated bout effect prevents significant increases in plasma creatine kinase and myoglobin concentrations by preserving sarcolemmal integrity during subsequent eccentric resistance exercise in sedentary young men.
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.
Doing a tough workout twice in a row actually protects your muscles from damage. After your first really hard session, your body adapts so that your next session won't cause muscle proteins to leak into your bloodstream like it did the first time.
See the scientific wording
Plasma creatine kinase and myoglobin concentrations do not increase significantly following a second bout of unaccustomed eccentric resistance exercise in a cohort of 15 sedentary young men, indicating that the initial massive leakage of muscle proteins into the bloodstream is effectively prevented by the repeated bout effect, which preserves sarcolemmal integrity during subsequent familiarized loading sessions.
What the research says
1 studyAfter doing a tough new workout, muscle proteins leak into the blood, but doing the same workout again two weeks later causes much less leakage and damage. This shows that repeating the exercise protects the muscles from future stress.
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.