Effect of dietary nitrate supplementation on exercise performance in challenging environmental conditions

This thesis examined the effectiveness of dietary nitrate supplementation, in the form of beetroot juice, on cycling exercise performance In either hot or hypoxic environmental conditions. While results show that there may be some marginal, albeit potentially practically meaningful, performance benefits for cycling time-trial performance in the heat and performance decrement during repeat-sprint performance in hypoxia, no improvements were recorded for thermoregulatory parameters in the heat or high-Intensity power output in hypoxia. It appears that there are many factors that may preclude certain individuals from receiving a significant benefit from dietary nitrate supplementation, and these factors require further investigation.