positiveloop
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Office of Dietary Supplements - Dietary Supplements for Exercise and Athletic Performance
Overview for health professionals of dietary supplements for exercise and athletic performance. Research safety, health effects, and use here.
ods.od.nih.gov
"randomly assigned 54 healthy Norwegian men and women aged 20–30 years, most of whom were recreational exercisers, to receive 1,000 mg vitamin C and 235 mg (about 520 IU) vitamin E as DL-alpha-tocopherol or a placebo daily for 11 weeks while engaging in an endurance training program consisting mostly of running. Compared with placebo, the supplements had no effect on maximal oxygen consumption (VO2max, a measure of aerobic fitness and endurance capacity) or running performance. However, they significantly lowered levels of biochemical markers related to mitochondrial creation and exercise-induced cell signaling, thereby diminishing the desirable training-induced adaptations within skeletal muscle [20]."
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