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首页> 美国政府科技报告 >F-22 Pilot Heart Rate Response to +Gz and Relationship to Pilot Fitness Using U.S. Air Force Fitness Test Scores.
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F-22 Pilot Heart Rate Response to +Gz and Relationship to Pilot Fitness Using U.S. Air Force Fitness Test Scores.

机译：使用美国空军健身测试分数，F-22飞行员心率对+ Gz的反应和与飞行员健身的关系。

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Previous works show heart rate (HR) increases in response to +Gz exposure due to baroreceptor reflex, the physical work of the anti-G straining maneuver, and the physiologic stress of G exposure. Individual fitness predicts resting HR and corresponding increase in HR in response to exercise. The purpose of this study was to look at U.S. Air Force (USAF) F-22 training sortie data to determine whether pilot fitness as characterized by the USAF fitness test components will affect the magnitude of the expected increase in HR over baseline HR in response to +Gz. Fitness parameters from the USAF physical fitness testing program for the pilots flying the sorties during the study timeframe were matched with sortie data and put into a de-identified dataset. These variables were examined using a linear regression model to characterize the relative contribution these variables had on increase in HR over baseline HR obtained at the beginning of the sortie. The dependent variable was Delta HR which is equal to Max Gz HR - Baseline HR. Continuous independent variables were Max Gz, sortie relative time, aero time, pushup count, crunch count, age, and height. Thirty-five percent of variation in Delta HR is explained by model (R2 = 0.352642). The magnitude of +Gz had the greatest impact on HR increase over baseline. Relative time within the sortie of the +Gz exposure also significantly impacted the increase in HR over baseline. Age, height, and pushup count contributed to the increase in HR over baseline. Aerobic time and crunch count were not found to significantly affect HR response. This study provides further insight into the expected HR increase in response to +Gz. It supports the previously known concept that the magnitude of +Gz and pilot height are significant contributors to the increase in HR. Analysis of the USAF physical training program fitness data indicates F-22 pilots as a group are very fit individuals.

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