The Claim
In resistance-trained women, acute caffeine ingestion at 4 mg/kg does not enhance performance, and its ergogenic effects are diminished or absent compared to untrained individuals or men.
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.
In women who regularly train with weights, consuming 4 mg of caffeine per kilogram of body weight does not improve physical performance, unlike in men or people who do not train regularly.
See the scientific wording
In resistance-trained women, the absence of performance enhancement from acute caffeine ingestion at 4 mg/kg suggests that the ergogenic effects of caffeine may be diminished or absent in this population compared to untrained or male individuals.
In women who regularly lift weights, the brain and spinal cord become less responsive to caffeine, so it doesn't increase muscle activation during exercise like it does in people who don't train or in men.
What the research says
1 studyFor women who regularly lift weights, drinking a standard amount of caffeine didn’t help them do more reps than when they didn’t take it. This suggests caffeine might not boost their strength like it sometimes does for men or people who don’t lift.
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.