Vitamin Intake

Some aspects of intake of the individual vitamins in athletes have been discussed in the previous paragraphs. Here we will discuss some general influences on daily vitamin intake. Vitamins are present in a wide variety of fresh unprocessed foods such as vegetables, fruits, berries, tubers and grains. A normal well balanced diet composed of a variety of foods is therefore believed to supply all necessary vitamins in sufficient quantities. However, in some situations the intake may be lower than the current RDA. Such a situation may occur when low energetic diets or unbalanced diets are consumed. This first situation occurs frequently in athletes who compete in low weight categories and follow weight reducing diet-training programmes. Alternatively, athletes who have to maintain a low body weight for prolonged periods of time such as female dancers and gymnasts may be prone to low vitamin intakes (Table 1).

Figure 38 Vitamin E supplementation may improve oxygen uptake and performance at high altitude, but more studies are required >-j before a supplementation recommendation can be justified (photo ARPE) w
Figure 39 Mountain running leads to mechanical microdamage in muscle fibres. It is suggested that recovery from muscle cell damage is improved when antioxidant vitamins are supplemented.
Figure 40 French fries are popular all around the world. Unfortunately many young athletes consume snack foods regularly between £ meals. This may affect the supply of essential nutrients in a negative way 01
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