Journal
APPLIED ERGONOMICS
Volume 95, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2021.103457
Keywords
Firefighting activity; Autonomic nervous system; Heart rate variability
Categories
Funding
- European Funding for Regional Development (FEDER)
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The study found that rescue interventions had a greater impact on psychophysiological variables at night compared to during the day, with the type of alarm having a minor effect.
This study aimed 1) to assess the psychophysiological responses throughout a rescue intervention performed during the day and at night and 2) to determine if a vibrating alarm influences these psychophysiological responses at night. Sixteen male firefighters completed a simulated intervention under three different conditions: 1) during the day with a sound alarm signal (DaySA), 2) during the night with a sound alarm signal (NightSA), 3) during the night with a vibrating alarm signal (NightVA). Cardiovascular and psychological stress were recorded throughout the interventions. During the alarm signal, HR reactivity was greater in NightSA than in DaySA (p < 0.01). Parasympathetic reactivation and self-confidence were significantly lower in NightSA than in DaySA (p < 0.05). HR reactivity was decreased in NightVA in comparison to NightSA (p < 0.05). Overall, the rescue intervention had a greater impact on the psychophysiological variables during the night than during the day, and the type of alarm had a minor effect.
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