The Claim
In heavy resistance-trained male youth rugby league players, transitioning from a maximal strength training mesocycle (70–100% 1RM) to a hypertrophy training mesocycle (35–70% 1RM) with increased volume is associated with greater muscle damage, as indicated by a 41.6% increase in delayed onset muscle soreness (DOMS) and a 26.7% increase in creatine kinase (CK) levels measured at 24 and 48 hours post-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.
When young male rugby players switch from heavy strength training to a higher-rep, lighter-weight muscle-building routine, they feel more sore and show more signs of muscle damage in their blood tests.
See the scientific wording
In heavy resistance-trained male youth rugby league players, transitioning from a maximal strength training mesocycle (70–100% 1RM) to a hypertrophy training mesocycle (35–70% 1RM) with increased volume is associated with greater muscle damage, as indicated by a 41.6% increase in delayed onset muscle soreness (DOMS) and a 26.7% increase in creatine kinase (CK) levels, measured at 24 and 48 hours post-exercise.
What the research says
1 studyThe study found that switching from heavy strength training to a higher-volume, lighter muscle-building routine caused more muscle soreness and damage in young rugby players, just like the claim says.
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.