The Claim
Periodized resistance training produces significantly greater improvements in vertical jump height compared to nonperiodized resistance training in collegiate women tennis players after a 9-month intervention.
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.
Collegiate women tennis players who followed a periodized resistance training program for 9 months improved their vertical jump height more than those who followed a nonperiodized program.
See the scientific wording
Periodized resistance training results in significantly greater improvements in vertical jump height (50% vs. 37%) than nonperiodized training in collegiate women tennis players after 9 months, suggesting that varied training intensity enhances lower-body power development more effectively than constant-load protocols.
Changing the weight and effort of lifts over time forces muscles to recruit their strongest fibers more often, which trains the nerves to fire faster and together, while also triggering hormones that build muscle. This makes the legs stronger and more explosive, allowing for higher jumps.
What the research says
1 studyStudy: Physiological changes with periodized resistance training in women tennis players.
Women tennis players who changed how hard they lifted over time jumped much higher than those who lifted the same weight every day — proving that mixing up your workout makes you stronger and more explosive.
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.