A Stress Test to Evaluate the Physical Capacity of Performing L-1 Anti-G Straining Maneuvers
Abstract
To evaluate the physical capacity of performing L-1 anti-G straining maneuvers (AGSM), 9 subjects participated in stress test protocols which were designed to use repetitive AGSM exercise on the ground. Physiological responses of oxygen uptake (VO2), minute pulmonary ventilation (VE), respiratory exchange ratio (RER) and heart rate (HR) were determined for steady state exercises at AGSM duty cycles of 20%, 25%, 33%, and 50%. The individual's physical capacity for performing AGSM can be objectively evaluated by the strength (peak output) and endurance (time to 40% fatigue) aspects of this continuous stress test. The higher peak VO achieved, the greater was considered the aerobic energy output for AGSM performance. This is dependent upon the muscle mass available, the condition of the muscles, as well as cardiopulmonary fitness of the individual. The longer endurance time for the ground test, the longer tolerance duration will most likely be obtained during actual centrifuge G-force testing. Therefore, the described AGSM stress test on the ground may be a convenient, inexpensive and useful tool objectively evaluate the physical capacity of individuals for performing AGSM. Such a test may be used for pilot candidate screening prior to centrifuge and aircraft G-tolerance testing. Future studies need to correlate results of this ground test with centrifuge G-force tolerance. Keywords: Acceleration tolerance; Tolerance physiology; Physiology; Stress physiology.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1988
- Accession Number
- ADA202301
Entities
People
- Wen-yaw Chiou
Organizations
- Wright State University