Papers/PMID:38568259
Caffeine ingestion compromises thermoregulation and does not improve cycling time to exhaustion in the heat amongst males.
European journal of applied physiology2024The record
2 findings · 1 compound · 2 endpoints · 1 null
What it reported
How to read these marksWhat moved
1 finding
caffeine — increases core body temperature
ModerateEvidence strength: moderate. Human evidence with one recorded weakness, or capped at moderate by its design or by unread numbers.Finding“The caffeine condition, therefore, had a significantly (0.6%) higher mean Tcore across the TTE trials compared to placebo (38.09 ± 0.39 °C vs. 37.87 ± 0.38 °C, respectively; d = 0.58).”
Quoted verbatim from Caffeine ingestion compromises thermoregulation and does not improve cycling time to exhaustion in the heat amongst males.. - Study
- crossover
- Dose
- 5 mg/kg body mass caffeine in capsules, single dose 1 h before exercise
- Population
- 12 healthy, caffeine-habituated, heat-unacclimatised males cycling to exhaustion in the heat (35 °C, 40% RH) at the power output associated with the thermoneutral gas exchange threshold, 60 min after ingestion; placebo was maltodextrin
Caffeine ingestion compromises thermoregulation and does not improve cycling time to exhaustion in the heat amongst males.2024PMID:38568259Permalink
What did not
1 finding
caffeine — no detected effect on time to exhaustion
ModerateEvidence strength: moderate. Human evidence with one recorded weakness, or capped at moderate by its design or by unread numbers.FindingNull resultreplicated ×2“There was no effect of caffeine supplementation on TTE (t(11) = − 1.2, P = 0.251, d = 0.16; Fig. 1).”
Quoted verbatim from Caffeine ingestion compromises thermoregulation and does not improve cycling time to exhaustion in the heat amongst males.. - Study
- crossover
- Dose
- 5 mg/kg body mass caffeine in capsules, single dose 1 h before exercise
- Population
- 12 healthy, caffeine-habituated, heat-unacclimatised males cycling to exhaustion in the heat (35 °C, 40% RH) at the power output associated with the thermoneutral gas exchange threshold, 60 min after ingestion; placebo was maltodextrin
Caffeine ingestion compromises thermoregulation and does not improve cycling time to exhaustion in the heat amongst males.2024PMID:38568259Permalink