The Claim
Caffeine ingestion is associated with a small to moderate increase in vertical jumping performance in females, with a pooled effect size of Hedges' g = 0.28, based on data from 15 studies involving 197 participants.
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.
Females who consume caffeine show a small to moderate increase in vertical jump height compared to those who do not, based on combined results from 15 studies.
See the scientific wording
Caffeine ingestion is associated with a small to moderate increase in vertical jumping performance in females, with a pooled effect size of Hedges' g = 0.28, based on data from 15 studies involving 197 participants, suggesting that caffeine may enhance explosive lower-body power in this population.
Caffeine blocks signals that slow down nerve-to-muscle communication, allowing nerves to fire more strongly and making leg muscles contract faster and harder during a jump.
What the research says
1 studyThis study found that women who drank caffeine were able to jump a little higher on average than when they didn’t, based on data from 15 different experiments. So yes, caffeine seems to give a small boost to explosive leg power in women.
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.