PHYSIOLOGY OF EXERCISE

摘要

Exercise requires the coordinated function of multiple body systems to maintain oxygen supply, body temperature, acid-base balance and muscular contractions. Energy supply for muscular contraction relies primarily on oxidation of carbohydrate and fatsources.The relative contribution of substrate sources is influenced by exogenous factors, including exercise intensity and duration, fitness, muscle composition, and nutritional status. Many of these factors can be readily manipulated to benefit athletic performance.