Compare an over-the-counter dietary supplement (NutraStem Active®) and placebo over a 30-day intervention on aerobic exercise performance and fatigue.~The hypothesis is that supplementation with NutraStem Active® improve aerobic performance and reduce subjective measures of fatigue.~The basic protocol includes baseline assessment of fitness and participation in a vigorous session of exercise immediately before and 30 days after consumption of the experimental supplement or placebo.~The exercise task is intended to be fatiguing and demanding but is not expected to create failure.~The supplement makes claims related to boosting exercise performance and reducing fatigue.~The study design will determine if these outcomes are in fact present in a group of healthy, young, and active adults.~The primary dependent measures are perceived exertion during exercise and levels of fatigue measured on multiple non-exercise days.
Compare an over-the-counter dietary supplement (NutraStem Active®) and placebo over a 30-day intervention on aerobic exercise performance and fatigue.~The hypothesis is that supplementation with NutraStem Active® improve aerobic performance and reduce subjective measures of fatigue.