Key result
ECG-based modeling links more special training sessions to exponentially lower flight stress intensity.
Why the study?
Evaluation of transient stress levels in pilots during special flight operations using ECG signals was needed to establish a stress assessment model.
Can ECG signals and heart rate variability be used to evaluate transient stress levels in pilots during flight operations?
Observational (n=11)
Can ECG signals and heart rate variability be used to evaluate transient stress levels in pilots during flight operations?
Effect estimate: R-square 0.9977
ECG signals and heart rate variability metrics can be utilized to model and evaluate transient stress levels in pilots during flight training.
May support ECG-based pilot stress monitoring; leaves open validation in operational settings.
The research is based on the evaluation of electrocardiogram (ECG) signals during the training period, and on the evaluation of the levels of human transient stress. The heart rate and related indexes of heart rate variability are calculated by collecting ECG signals of pilots during special flight operations, then the heart rate related indexes and the time domain indexes of heart rate variability are analyzed for the individual ECG signals which produce transient stress. Meanwhile, the area change of heart rate curve under stress is also analyzed, and the multi-scale algorithm is used to analyze the change of the area of the heart rate curve. The functional relationship between stress intensity and training times is constructed, the division method of flight training and stress stages is put forward, too. Finally, a pilot stress evaluation model is established based on ECG signal.
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Shao et al. (2018) conducted an observational in Flight stress (n=11). Special flight training operations was evaluated on Stress intensity function based on heart rate curve area (R-square 0.9977). A pilot stress evaluation model based on ECG signals revealed that flight stress intensity decreases exponentially with the number of special training sessions (R-square 0.9977).
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