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 (Day_SA), 2) during the night with a sound alarm signal (Night_SA), 3) during the night with a vibrating alarm signal (Night_VA). Cardiovascular and psychological stress were recorded throughout the interventions.

During the alarm signal, HR reactivity was greater in Night_SA than in Day_SA (p < 0.01). Parasympathetic reactivation and self-confidence were significantly lower in Night_SA than in Day_SA (p < 0.05). HR reactivity was decreased in Night_VA in comparison to Night_SA (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.

本研究旨在 1) 评估在白天和夜间进行的救援干预过程中的心理生理反应，以及 2) 确定振动警报是否会影响夜间的这些心理生理反应。

16 名男性消防员在三种不同条件下完成了模拟干预：1) 白天发出声音警报信号 (Day _SA )，2) 夜间发出声音警报信号 (Night _SA )，3) 夜间发出振动信号警报信号（夜间_VA）。在整个干预过程中记录心血管和心理压力。

在警报信号期间，夜间_{SA 的}HR 反应性高于白天_SA ( p  < 0.01)。夜间_{SA 的}副交感神经再激活和自信心显着低于白天_SA ( p  < 0.05)。与夜间_SA相比，夜间_{VA 的}HR 反应性降低（p  < 0.05）。

总体而言，夜间救援干预对心理生理变量的影响大于白天，警报类型的影响较小。