No abstract

The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, Increasing worldwide concern over the effects of moderate altitude exposure on aircrew performance in unpressurized aircraft recently prompted efforts to formulate international standards for the use of supplementary oxygen. The purpose of this study was to assess the impact of low to moderate levels of hypoxic hypoxia on the performance of aircrew personnel. Fifty subjects were exposed in a randomized controlled fashion to 45-min exposures at each altitude (sea level, 8000, 10,000, 12,000 and 14,000 ft) simulated by the ROBD. During the latter part of the exposure the subjects completed the CogScreen®-HE to measure their cognitive performance. Saturation of Peripheral Oxygen (SpO2) analysis showed that although the subjects did become hypoxic (p<001), there was not statistically significant change in reaction time (p=.781), accuracy (p=.152), or throughout (p=.967) with increasing altitude. The results indicate that healthy individuals aged 19 to 45 years do not experience significant cognitive deficit, as measured by the CogScreen®-HE, when exposed to moderate levels of hypoxia for exposure times of 45 min at various altitudes.hypoxia, cognitive deficit, ROBD, CogScreen®-HE UNCLAS UNCLAS UNCLAS SAR 27

No abstract

Overall, the findings identified factors contributing to fatigue and performance degradation currently experienced by those sampled in this study. Specifically, inconsistent shiftwork, less than optimal levels of rest, and poor sleep quality in the field were identified. Compared to past research, the extent to which fatigue is perceived to be a widespread problem is significantly lower than reported 15 yr prior.Kelley AM, Feltman KA, Curry IP. A survey of fatigue in army aviators. Aerosp Med Hum Perform. 2018; 89(5):464-468.

The research basis for scientific validity and reliability regarding current peer fatigue scoring systems is exiguous. This novel approach may be of merit, particularly among military aircrew in a deployed-type setting with sustained high workload, operational stress, and limited time for supernumerary tasks. An anonymous subjective peer-to-peer fatigue scoring system is worthy of further scientific investigation, particularly warranting studies of reliability and validity.