Caffeine and Hypoxia During Exercise in Males and Females

Negligible amount of maltodextrin in flavoured drink solution containing 6 mg/kg body mass caffeine provided 45 minutes before exercise

Participants will be breathing from a hypoxic gas mixture (13% O2) for the duration of the exercise bout. This will simulate an altitude of approximately 3500 m.

Negligible amount of maltodextrin in flavoured drink solution provided 45 minutes before exercise.

Participants will be breathing from ambient air (\~21% O2) for the duration of the exercise bout. This will provide no hypoxic stimulus as the laboratory is located relatively near sea level (295 m)