The Claim

Caffeine administration at 3 mg/kg has no effect on oral temperature in adolescent male volleyball players, and its cognitive effects are mediated by neuropharmacological mechanisms independent of thermoregulatory changes.

Source: Differential Time-of-Day Effects of Caffeine Capsule and Mouth Rinse on Cognitive Performance in Adolescent Male Volleyball Athletes: A Randomized Crossover Investigation

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
64score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

Giving adolescent male volleyball players 3 mg of caffeine per kilogram of body weight does not change their oral temperature, and any cognitive effects from caffeine occur through direct brain mechanisms, not through changes in body heat.

See the scientific wording

Caffeine administration at 3 mg/kg does not alter oral temperature in adolescent male volleyball players, indicating that its cognitive effects are mediated by neuropharmacological mechanisms rather than thermoregulatory changes.

Why this might work

Caffeine enters the brain and blocks signals that make you feel tired, which lets brain chemicals that boost alertness and focus become more active, making you react faster and think more clearly without changing your body temperature.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Differential Time-of-Day Effects of Caffeine Capsule and Mouth Rinse on Cognitive Performance in Adolescent Male Volleyball Athletes: A Randomized Crossover Investigation

    Caffeine helped young athletes think faster and react better without making them hotter, which means it works by changing brain chemistry, not by warming up their bodies.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.