Are the Sleep-Wake Cycle and Sleep Duration Ethnically Determined? A Comparison of Tibetan and Japanese Children's Sleep.

IF 2.1 Q3 CLINICAL NEUROLOGY Clocks & Sleep Pub Date : 2024-11-12 DOI:10.3390/clockssleep6040046

Ping Su, Masako Taniike, Yuko Ohno, Ikuko Mohri

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Abstract

Background: Several environmental factors affect sleep. We investigated the sleep and sleep-related habits of preschool children living in Tibet and conducted an international comparison with those in Japan.

Methods: We conducted a community-based cross-sectional study using the Chinese version of the Japanese Sleep Questionnaire for Preschoolers (JSQ-P-C) and compared the results with previous data on Japanese children.

Results: The sleep status of 3113 children aged 3-6 years old in Qinghai province was evaluated. The average wake time and bedtime of the Tibetan children were 7:20 ± 0:31 and 21:16 ± 0:43, respectively. Their mean nocturnal sleep duration was 10.0 ± 0.7 h. In comparing 3-year-old children, the time for which they viewed TV in Tibet was shorter (65.5 ± 44.6 min) than that in Japan (149.7 ± 76.6 min), and the mother's bedtime was earlier in Tibet (21:28 ± 2:14) than in Japan (23:20 ± 1:05). However, the bedtime and sleep duration of the Tibetan children (21:17 ± 0:37 and 10.0 ± 0.7 h) were fairly similar to those of the Japanese children (21:24 ± 1:57 and 9.8 ± 0.8 h).

Conclusions: The late bedtime and short nocturnal sleep duration of Tibetan toddlers were the same as those of Japanese toddlers despite considerable differences in their lifestyle and environment.

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睡眠-觉醒周期和睡眠时间是由种族决定的吗？藏族和日本儿童睡眠的比较。

背景：影响睡眠的环境因素很多。我们调查了生活在西藏的学龄前儿童的睡眠及与睡眠相关的习惯，并与日本的学龄前儿童进行了国际比较：方法：我们使用中文版日本学龄前儿童睡眠问卷（JSQ-P-C）进行了一项基于社区的横断面研究，并将研究结果与以往的日本儿童数据进行了比较：结果：对青海省 3113 名 3-6 岁儿童的睡眠状况进行了评估。藏族儿童的平均起床时间和就寝时间分别为 7:20 ± 0:31 和 21:16 ± 0:43。在 3 岁儿童中，西藏儿童看电视的时间（65.5 ± 44.6 分钟）比日本儿童（149.7 ± 76.6 分钟）短，西藏母亲的就寝时间（21:28 ± 2:14）比日本母亲的就寝时间（23:20 ± 1:05）早。然而，西藏儿童的就寝时间和睡眠时间（21:17 ± 0:37 和 10.0 ± 0.7 小时）与日本儿童（21:24 ± 1:57 和 9.8 ± 0.8 小时）相当接近：结论：尽管藏族幼儿的生活方式和环境与日本幼儿有很大差异，但他们的晚睡和夜间睡眠时间短的情况与日本幼儿相同。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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