★Article of Associate professor Fujii, Professor Nishiyasu and Dr. Katagiri was published in the Medicine & Science in Sports & ExerciseArticle of Associate professor Fujii, Professor Nishiyasu and Dr. Katagiri was published in the Medicine & Science in Sports & Exercise
Pre-exercise caffeine consumption can enhance endurance performance. However, this ergogenic effect may not be seen in hot conditions, possibly due to increased physiological strain associated with very high concentrations of caffeine in the blood, including hyperthermia, exacerbated hyperventilation, and cerebral hypoperfusion.
In the present study, we demonstrated that in-exercise caffeine intake, which delays elevations in blood caffeine concentrations, improves performance during the late stages of prolonged exercise in the heat. Additionally, this approach dose not exacerbate hyperventilation, cerebral hypoperfusion, and hyperthermia during exercise in the heat at corresponding time points compared to a no-caffeine condition. However, due to enhanced exercise performance achieved with caffeine, cardiorespiratory and temperature strain could be elevated at the end of exercise.
https://www.tsukuba.ac.jp/journal/medicine-health/20250625141500.html
Medicine & Science in Sports & Exercise
