Key result
Acute hypobaric hypoxia is linked to increased sympathetic tone, HR, and lower O2 saturation.
Why the study?
Information on the psychophysiological responses of pilots under hypoxic conditions was lacking, which is essential to optimize hypobaric chamber training processes for aircrew members.
Does an incremental hypoxia training protocol affect psychophysiological stress responses in military aircrew?
Population
44 aircrew members (34 males and 10 females)
Comparison
Incremental hypoxia training protocol (0 meters vs 5,000 meters vs 7500 meters)
Authors
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May warrant monitoring during aircrew hypoxia training; leaves open whether incremental protocols attenuate these responses.
Observational (n=44)
Does an incremental hypoxia training protocol affect psychophysiological stress responses in military aircrew?
Acute hypoxic hypobaric exposure in military aircrew leads to decreased parasympathetic tone, oxygen saturation, and spirometry values, while increasing perceived stress and effort, without impairing handgrip strength or cortical arousal.
Bustamante-Sánchez et al. (2021) reported an observational. Incremental hypoxia training protocol was evaluated on Psychophysiological responses (cortical arousal, handgrip strength, sympathetic tone, perceived stress, perceived effort, heart rate, forced expiratory volume, blood oxygen saturation). Acute hypoxic hypobaric exposure increased sympathetic tone, perceived stress, and heart rate, and decreased blood oxygen saturation and forced expiratory volume in military aircrew.
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