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Exercise Physiology
During exercise, the body utilizes different amounts of proteins, carbohydrates and fats for its energy needs. Swimming is a sport that can be considered to consume considerable amounts of this. Generally, various other conditions such as the age, sex, level of training as well as that body weight of swimmers determine their consumption. Typically, Wilmore, Costill and Kenney (2007) indicate that an active swimmer consumes between 1.4-1.8g/kg of body weight each day. With regard to carbohydrates, the same swimmer utilizes 9-10 g/kg of body weight each day. With respect to fats, it is indicated that the swimmer derives 20-25% of energy from these. Thus in a typical scenario, this translates to a consumption of 44-56 grams of the same in each day.
Energy consumption of a marathon runner is depended on the intensity of activity of the same. Usually, intense exercises require more energy than the slow ones. Also, the period of time employed in training determines the amount of fuel that is utilized. Basically, Gene and William (2007) indicate that marathon running requires a total of 60kcal/km. Of this, the percentage of protein consumed is 15-20, the fat consumed is 30 percent of this and the percentage of carbohydrates consumed assumes a fifty percent of this total. In his review, Wilmore et al (2007) asserts that the duration of the event also influences energy consumption. Short term events tend to utilize more carbohydrates while long term events utilize more fats.
References
Gene, A. & William, B. (2007). Exercise Physiology Manual. USA: McGraw Hill.
Wilmore, J., Costill, D. & Kenney, W. (2007). Physiology of Sport & Exercise. 4th Edition. USA: Human Kinetics
