Part 1 Physiology of exercise: physiology of exercise in the United States - its past, its future; control of the internal environment; bioenergetics; exercise metabolism; hormonal responses to exercise; measurement of work, power, and energy expenditure; the nervous system - structure and control of movement; skeletal muscle - structure and function; circulatory adaptations to exercise; respiration during exercise; acid-base balance during exercise; temperature regulation; the physiology of training - effect on V02 max, performance, homeostasis, and strength. Part 2 Physiology of health and fitness: patterns in health and disease - epidemiology and physiology; work tests to evaluate cardiorespiratory fitness; training for health and fitness; exercise for special populations; body composition and nutrition for health. Part 3 Physiology of performance: factors affecting performance; work tests to evaluate performance; training for performance; training for special populations; nutrition, body composition, and performance; exercise and the environment; ergogenic aids. Appendices: calculation of oxygen uptake and carbon dioxide production; estimated energy expenditure during selected activities; physical activity prescription; recommended dietary allowances; REAs - estimated safe and adequate daily dietary intakes of selected vitamins and minerals; RDSs - median heights and weights and recommended energy intake; percent fat estimate for men - sum of triceps, chest, and subscapula skinfolds; percent fat estimate for women - sum of triceps, abdomen, and suprailium skinfolds.