The purpose of the present study was to clarify the effect of hypoxic exercise on the change in glucose concentrations using the Continuous Glucose Monitoring (CGM). Five healthy males volunteered to participated in this study. Glucose concentrations were monitored using CGM for 2 days on two occasions (exercise in normoxia and hypoxia). Day 1 is non-exercise control day. On day 2, subjects performed cycle exercise at 50% of their peak oxygen uptake for 1 hour at 09:30 while breathing normoxic [inspired oxygen fraction (FIO₂) = 0.21] or hypoxic (FIO₂ = 0.12-0.13) gas mixture. Glucose concentrations following exercise in normoxia and hypoxia on day 2 were lower than those at the same time on day 1 (non-exercise day). There was no significant difference in glucose concentrations between normoxic and hypoxic trials. These results indicate that hypoxia does not have a significant impact on glucose concentrations after single-bout of aerobic exercise in healthy individuals.

DESCENTE SPORTS SCIENCE Vol.35/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE