Suzuki Chihiro, Suzuki Yoko, Abe Takashi, Kanbayashi Takashi, Fukusumi Shoji, Kokubo Toshio, Takahara Isamu, Yanagisawa Masashi
International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan.
Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Ibaraki, Japan.
PLoS One. 2025 Jan 7;20(1):e0316579. doi: 10.1371/journal.pone.0316579. eCollection 2025.
In remote areas, visiting a laboratory for sleep testing is inconvenient. We, therefore, developed a Mobile Sleep Lab in a bus powered by fuel cells with two sleep measurement chambers. As the environment in the bus could affect sleep, we examined whether sleep testing in the Mobile Sleep Lab was as feasible as in a conventional sleep laboratory (Human Sleep Lab). We tested 15 healthy adults for four nights using polysomnography (the first two nights at the Human Sleep Lab or Mobile Sleep Lab with a switch to the other facility for the next two nights). Sleep variables of the four measurements were used to assess the discrepancy of different places or different nights. No significant differences were found between the laboratories other than the percentage of total sleep time in stage N3. Next, we analyzed the intraclass correlation coefficient to evaluate the test-retest reliability. The intraclass correlation coefficient between these two measurements: the Human Sleep Lab and Mobile Sleep Lab showed similar reliability for the same sleep variables. The intraclass correlation coefficient revealed that several sleep indexes, such as total sleep time, sleep efficiency, wake after sleep onset, percentage of stage N1, and stage R latency, showed poor reliabilities (<0.5) based on Koo and Li's criteria. In contrast, the percentage of stage N3 showed moderate (0.5-0.75) or good (0.75-0.9) reliabilities. As almost all sleep variables showed no difference and same level of test-retest reliability between the Mobile Sleep Lab and Human Sleep Lab, the Mobile Sleep Lab might be suitable for conducting polysomnography as a conventional sleep laboratory. The reduction in N3 in the Mobile Sleep Lab should be scrutinized in the larger sample, including sleep disorders. Practical application of the Mobile Sleep Lab can transform sleep medicine in remote areas.
在偏远地区，前往实验室进行睡眠测试很不方便。因此，我们在一辆由燃料电池供电的巴士上开发了一个移动睡眠实验室，该实验室有两个睡眠测量室。由于巴士内的环境可能会影响睡眠，我们研究了在移动睡眠实验室进行睡眠测试是否与在传统睡眠实验室（人类睡眠实验室）一样可行。我们使用多导睡眠图对15名健康成年人进行了四晚的测试（前两晚在人类睡眠实验室或移动睡眠实验室，接下来两晚切换到另一个实验室）。四次测量的睡眠变量用于评估不同地点或不同夜晚之间的差异。除了N3期总睡眠时间百分比外，各实验室之间未发现显著差异。接下来，我们分析了组内相关系数以评估重测信度。这两种测量方法（人类睡眠实验室和移动睡眠实验室）之间的组内相关系数对于相同的睡眠变量显示出相似的信度。组内相关系数显示，根据Koo和Li的标准，一些睡眠指标，如总睡眠时间、睡眠效率、睡眠开始后的觉醒时间、N1期百分比以及快速眼动期潜伏期，显示出较差的信度（<0.5）。相比之下，N3期百分比显示出中等（0.5 - 0.75）或良好（0.75 - 0.9）的信度。由于几乎所有睡眠变量在移动睡眠实验室和人类睡眠实验室之间均无差异且重测信度水平相同，移动睡眠实验室可能适合作为传统睡眠实验室进行多导睡眠图检查。移动睡眠实验室中N3期的减少应在包括睡眠障碍患者在内的更大样本中进行仔细研究。移动睡眠实验室的实际应用可以改变偏远地区的睡眠医学。
