Accession Number : AD0701941

Title :   EVALUATION OF CEREBRAL AND SYMMETRIC VASCULAR DYNAMICS IN RESPONSE TO STRESS.

Descriptive Note : Annual summary rept.,

Corporate Author : BOWMAN GRAY SCHOOL OF MEDICINE WINSTON-SALEM N C

Personal Author(s) : Miller,Henry S. , Jr

Report Date : MAY 1969

Pagination or Media Count : 8

Abstract : The project was instituted to investigate the vascular dynamics under stress conditions. Transducer techniques were developed for obtaining direct and indirect measurements of the physiological variables under investigation and mathematical techniques for the computer analysis of this data. A 6 Channel recorder was modified for 6 Channel electrocardiogram recording at rest and during active exercise. Atrial pacing, treadmill exercise and drug injections have been used as methods of stressing the cardiovascular system. The electrocardiogram, apexcardiogram, carotid pulse waves, phonocardiography and blood pressure have been done before and after exercise. In patients with known coronary artery disease, intra-arterial pressures, electrocardiogram, and clinical evidence of cerebral and coronary insufficiency are recorded during the stress by rapid atrial pacing. Two groups of 20 subjects have undergone 20 weeks of exercise for physical conditioning, exercising 1 hour four days a week at 60-70% of maximum pre and post training. Treadmill stress and electrocardiogram, 0 sub 2 consumption and numerous chemistries were recorded. Physical conditioning increased tolerance, maximum oxygen consumption and recovery rate based on the return of pulse rate to normal. (Author)

Descriptors :   (*CARDIOVASCULAR SYSTEM, *STRESS(PHYSIOLOGY)), (*CEREBROVASCULAR SYSTEM, STRESS(PHYSIOLOGY)), RESPONSE(BIOLOGY), ELECTROCARDIOGRAPHY, PHYSIOLOGY, BLOOD PRESSURE, TOLERANCES(PHYSIOLOGY), PULSE RATE, OXYGEN CONSUMPTION, EXERCISE(PHYSIOLOGY), FATIGUE(PHYSIOLOGY), CARDIOVASCULAR DISEASES, RECORDING SYSTEMS

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE