The Claim
High-intensity resistance training (90% 1RM, 2 sets of 4 repetitions) increases horizontal countermovement jump distance by 11.3% in male academy soccer players, whereas moderate-intensity resistance training (80% 1RM, 3 sets of 8 repetitions) does not significantly alter horizontal countermovement jump distance.
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.
Male academy soccer players who perform high-intensity resistance training with heavy weights and few repetitions show a measurable 11.3% increase in horizontal jump distance, while those who perform moderate-intensity training with lighter weights and more repetitions show no significant change in jump distance.
See the scientific wording
High-intensity resistance training (90% 1RM, 2x4) improves horizontal countermovement jump distance by 11.3% in male academy soccer players, while moderate-intensity training (80% 1RM, 3x8) does not produce a significant change, suggesting intensity may be critical for transfer to horizontal power.
Lifting very heavy weights forces the nervous system to recruit more muscle fibers at the same time and fire them faster, which makes the muscles produce force more quickly and powerfully during jumps.
What the research says
1 studySoccer players who lifted heavy weights with few reps jumped 11.3% farther horizontally, while those who lifted lighter weights with more reps didn’t improve at all. This shows that lifting heavy matters more than doing more reps for jumping farther.
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.