Abstract
Introduction: Previous research has shown improved exercise economy via reduced oxygen (O2) cost and increased performance during exercise with supplemental dietary nitrate intake. This supplementation has been shown to increase exercise time at VO2max power in cyclists as well as improved cycling time trial performance. Nitrate intake is believed to exert its effect on oxygen cost and performance by increasing nitric oxide bioavailability. This investigation examined the effect of varied nitrate concentration, contained in beetroot juice, on sub-maximal and maximal performance during cycling exercise.
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