Lieberman H R, Mays M Z, Shukitt-Hale B, Chinn K S, Tharion W J
Military Performance and Neuroscience Division, U.S. Army Research Institute of Environmental Medicine (USARIEM), Natick, MA 01760-5007, USA.
Aviat Space Environ Med. 1996 Sep;67(9):841-8.
We wanted to determine whether sleep is disrupted when soldiers sleep in a new chemical protective mask, the M40. Sleep quantity and quality, extent of protection provided by the mask during sleep, and next day performance were assessed.
After several days of training, 9 male soldiers slept with and without the M40 mask on four occasions.
Soldiers were able to tolerate the mask for most or all of the night. However, sleep, as assessed by wrist-worn activity monitors, was significantly disturbed. Minutes (mean +/- SEM) of waking significantly increased, from 25 +/- 2.1 to 86 +/- 8.5 per night (p < 0.001), and number of awakenings rose from 8 +/- 0.6 to 20 +/- 0.9 (p < 0.0001). Soldiers reported that it took longer and was more difficult to fall asleep when wearing the mask. Errors on a choice reaction time task increased significantly and subjects reported greater fatigue and sleepiness the day after sleeping in the mask. Protection provided by the masks varied substantially among subjects and declined over the course of the study. Some soldiers were protected throughout the night but others were only protected intermittently.
We conclude that sleeping in the chemical protective mask should only be done when necessary, given the adverse effects on sleep and daytime function, as well as the variability of protection, of the mask.
我们想要确定士兵佩戴新型化学防护面具M40睡眠时睡眠是否会受到干扰。对睡眠数量和质量、睡眠期间面具提供的防护程度以及次日表现进行了评估。
经过几天的训练，9名男性士兵在四种情况下分别戴着和不戴M40面具睡觉。
士兵们能够在大部分或整个夜间耐受该面具。然而，通过佩戴在手腕上的活动监测器评估，睡眠受到了显著干扰。夜间清醒的分钟数（平均值±标准误）显著增加，从每晚25±2.1分钟增至86±8.5分钟（p<0.001），觉醒次数从8±0.6次增至20±0.9次（p<0.0001）。士兵们报告称，佩戴面具时入睡所需时间更长且更困难。选择反应时间任务中的错误显著增加，且受试者报告在戴面具睡觉后的第二天疲劳和困倦感更强。不同受试者之间面具提供的防护差异很大，且在研究过程中防护效果有所下降。一些士兵整夜都受到防护，但另一些士兵只是间歇性地受到防护。
我们得出结论，鉴于该面具对睡眠和日间功能有不利影响以及防护效果存在差异，只有在必要时才应戴着化学防护面具睡觉。
