The physiologic and metabolic adjustments of the body to a single endurance exercise session are analyzed in terms of the respiratory system, the cardiovascular system, and oxygen delivery to the muscles. Patients with cardiorespiratory and neuromuscular diseases are compared to normal individuals. (Author/MT)

This study is based upon a doctoral dissertation completed at the University of Southern California, 1965.

A study of effects of squatting exercise on heart rate and blood lactate levels in trained and untrained males indicated that trained subjects performed more work and had higher heart rates and lactate levels at exhaustion untrained subjects, though heart rate and lactate levels were lower for trained subjects at a given bar mass or submaximal…

The efficacy of blood doping (infusion of blood into an athlete's circulatory system) has not been established and merits further research. (JD)

The decrease in intraocular pressure during exercise and the first few minutes of recovery is related to a decrease in blood pH and an increase in blood lactate concentration, not to the intensity of the exercise. (MB)

Nine 18- to 29-year-old females were studied while jogging and skipping at treadmill speeds of 4.0, 4.8, and 5.4 miles per hour. Comparison of metabolic demand, musculoskeletal stress, and perceived exertion indicated skipping imposed significantly greater metabolic demands and caused higher heart rates than jogging. Skipping was also rated more…

This study investigated the question of hemoconcentration-hemodilution and subsequent vascular fluid shifts evidenced by marathon runners. Blood samples were taken from runners before and after the New York City Marathon of 1978 and the Fiesta Bowl Marathon of the same year. Participants were of both sexes. Tables accompanying this report present…

Demonstration activities that can be developed by teachers and presented at health fairs to increase student awareness of cardiovascular disease risk factors include: (1) blood pressure measurement; (2) exercise and heart action; and (3) healthy snacks. (CJ)

Cardiovascular endurance is defined as the ability of the heart, lungs, and circulatory system to provide the cells of the body with the necessary substances to perform work for extended periods of time. People beginning such a program need to have an understanding of warming-up, intensity, duration, and frequency of an exercise program. (JN)

The author describes a six-week, strenuous physical activity program for eight- to ten-year-old girls and its effect on blood lipid levels. The contribution competitive athletic programs can make upon children's health status is discussed. (MJB)

To evaluate the effects of drinking glucose and fructose before prolonged exercise, six female runners were given glucose, fructose, saccharin, or plain water to drink before running to exhaustion. Metabolic processes were monitored. The best performance came from those drinking water alone. Fructose seemed preferable to glucose, however.…

A ten-week jogging program for middle-aged people can reduce heart rate during the performance of tasks other than running; it appears that tissue adaptations for uptake and use of oxygen may influence the cardiovascular response to exercise. (JD)

This book is both a personal and technical account of the experience of running by a heart specialist who began a running program at the age of 45. In its seventeen chapters, there is information presented on the spiritual, psychological, and physiological results of running; treatment of athletic injuries resulting from running; effects of diet…

Describes a computer program allowing students to study such circulatory variables as venus return, cardiac output, mean circulatory filling pressure, resistance to venous return, and equilibrium point. Documentation for this Applesoft program (or diskette) is available from author. (JM)