Master athletes are more than 35 years of age and continue to train as hard as 
their young counterparts despite the aging process. All life long, they are 
capable of accomplishing exceptional sporting performances. For these 
participants in endurance events, matching energy intake and expenditure is 
critical to maintain health and performance. The proportions of carbohydrate, 
fat, and protein must be optimized to provide enough calories to sustain the 
energy requirements of competition or training, and for recovery. In addition, 
endurance athletes must include adequate vitamins and minerals in their diets to 
maintain healthy immune function. Vitamins and minerals may be sufficient in the 
diets of endurance athletes, who have a high energy intake. This would make it 
unnecessary to use vitamin and mineral supplements. Furthermore, one major 
limitation for these athletes is the management of oxidative stress, which, when 
in excess, can be deleterious for the organism. For individuals exposed to 
oxidative stress, micronutritional supplementations rich in vitamins and 
minerals can be also an alternative strategy. Although these supplementations 
are increasingly used by master athletes, very few data are available on their 
effects on oxidative stress, muscle recovery, and physical performance. The 
potential benefits of supplement use in athletes are thus questionable. Some 
studies indicate no benefits, while others highlight potential negative side 
effects of vitamin supplementation. Additional studies are warranted in order to 
design adapted prescriptions in antioxidant vitamins and minerals.