Related Experiment Videos
Perceived exertion during submaximal G exposures before and after physical training
U I Balldin1, P Kuronen, H Rusko
1Division of Aviation Medicine, National Defence Research Establishment, Sweden.
Aviation, Space, and Environmental Medicine
|March 1, 1994
Summary
Physical training significantly improved pilots' G tolerance and reduced perceived exertion during simulated combat. Lower RPE and higher SaO2 during submaximal G exposure indicate enhanced endurance, potentially reducing the need for exhaustive testing.
Area of Science:
- Aerospace Medicine
- Human Physiology
- Exercise Science
Background:
- G-force exposure poses significant risks to pilot endurance and performance.
- Assessing G tolerance typically involves exhaustive testing, which carries inherent risks and discomfort.
- Objective physiological markers for monitoring training adaptations in G tolerance are needed.
Purpose of the Study:
- To evaluate the impact of a 12-month combined strength and endurance training program on G tolerance in pilots.
- To determine if submaximal measures of perceived exertion (RPE) and oxygen saturation (SaO2) can serve as indicators of improved G tolerance.
- To explore the relationship between changes in RPE, SaO2, and G tolerance.
Main Methods:
- 17 pilots underwent a 12-month combined strength and endurance training program.
- Ratings of Perceived Exertion (RPE) were recorded during submaximal G-force exposure tests.
- G tolerance (time to exhaustion) and arterial oxygen saturation (SaO2) were measured before and after the training period.
Main Results:
- G tolerance increased by a mean of 40% (p < 0.001) after training.
- Mean RPE at 5 minutes of submaximal G exposure decreased by 1.2 units (p < 0.02).
- Mean SaO2 increased from 84% to 90% (p < 0.01), while heart rate responses remained unchanged. A significant correlation was found between improved G tolerance and decreased RPE (p = 0.05).
Conclusions:
- Submaximal RPE and SaO2 levels during G exposure can indicate changes in pilot endurance G tolerance.
- This approach may offer a safer and less uncomfortable alternative to exhaustive G tolerance testing.
- Combined physical training effectively enhances G tolerance in aviators.