In fact, vitamin deficiencies are rare in this country. But skipping meals, dieting and relying on processed and fast foods all contribute to poor nutrition. Athletes in particular tend to wonder if their vitamin needs are being met. In their quest to be competitive, many athletes have embraced the promises of improved performance made by vitamin and mineral supplements. Unfortunately, they are often misled by advertisements that promise things they can't deliver.
Minerals also play a role in exercise.
Iron found in red blood cells transports oxygen to exercising muscle cells. Calcium and magnesium are minerals necessary for muscle contraction. Phosphorous is required for formation of ATP, which provides energy in cell metabolism. There is no doubt that diet is a critical element in maintaining high levels of exercise performance. It would be difficult to gather up the strength to lift weights, run a marathon, or even walk, if the levels of vitamins in the tissues were to low.