Sports nutrition importance

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Trained athletes, especially at the elite level, are more aware of the results of anaerobic and aerobic metabolism than nonathletes. Genetic endowment and training are important to the success of the athlete, but akeen understanding ofphysiology and metabolism is equally important. To plan nutrition for performance, a serious athlete must understand the nature of metabolism as it relates to his or her chosen sport. A working muscle has four different sources of energy available after a period of rest ... 

The most important nutritive requirements of athletes are (1) the extra calories to cover the energy cost of the physical activity (unless he or she is trying to lose some body fat by means of caloric restriction), and (2) water to replace that which is lost in sweat. Data on the eneigy expenditure for various sports are given in Table A-7 (next page). 

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