The Claim
In heavy resistance-trained male youth rugby players, higher-volume hypertrophy training is associated with modest reductions in drop jump performance (−4.1 ± 7.2%; ES = 0.7) compared to maximal strength training, although the use of two different force plates introduces measurement limitations that reduce confidence in the observed effect.
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.
For young male rugby players who lift weights, doing more reps to build muscle might slightly hurt their jumping ability compared to training for pure strength — but the measurement wasn't perfect, so we're not totally sure.
See the scientific wording
In heavy resistance-trained male youth rugby players, higher-volume hypertrophy training is associated with modest reductions in drop jump performance (−4.1 ± 7.2%; ES = 0.7) compared to maximal strength training, though technical limitations in measurement (use of two different force plates) reduce confidence in this finding.
What the research says
1 studyThe study found that when young rugby players switched from heavy strength training to higher-volume muscle-building workouts, their jump performance dropped slightly, just like the claim says, though the measurement wasn't perfect.
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.