Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore 229899, Singapore.
Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore.
Nutrients. 2022 Jun 4;14(11):2348. doi: 10.3390/nu14112348.
The extent to which lifestyle practices at night influence sleep quality in pregnant women remains unknown. This study aimed to examine whether nocturnal behaviours were associated with poor sleep during pregnancy. We performed a cross-sectional analysis of a prospective cohort of pregnant women at 18-24 gestation weeks recruited from KK Women's and Children's Hospital, Singapore, between 2019 and 2021. Nocturnal behaviours were assessed with questionnaires, and sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI) with a global score ≥5 indicative of poor sleep quality. Modified Poisson regression and linear regression were used to examine the association between nocturnal behaviour and sleep quality. Of 299 women, 117 (39.1%) experienced poor sleep. In the covariate-adjusted analysis, poor sleep was observed in women with nocturnal eating (risk ratio 1.51; 95% confidence interval [CI] 1.12, 2.04) and nocturnal artificial light exposure (1.63; 1.24, 2.13). Similarly, nocturnal eating (β 0.68; 95% CI 0.03, 1.32) and light exposure (1.99; 1.04, 2.94) were associated with higher PSQI score. Nocturnal physical activity and screen viewing before bedtime were not associated with sleep quality. In conclusion, reducing nocturnal eating and light exposure at night could potentially improve sleep in pregnancy.
目前尚不清楚夜间生活方式对孕妇睡眠质量的影响程度。本研究旨在探究夜间行为是否与孕妇睡眠质量差有关。我们对 2019 年至 2021 年间在新加坡 KK 妇女儿童医院招募的 18-24 孕周的孕妇前瞻性队列进行了横断面分析。通过问卷评估夜间行为，使用匹兹堡睡眠质量指数（PSQI）测量睡眠质量，总分≥5 表示睡眠质量差。采用校正后的泊松回归和线性回归分析夜间行为与睡眠质量之间的关系。在 299 名女性中，有 117 名（39.1%）存在睡眠质量差的情况。在调整了协变量的分析中，夜间进食（风险比 1.51；95%置信区间[CI]1.12-2.04）和夜间人工光照暴露（1.63；1.24-2.13）的女性睡眠质量较差。同样，夜间进食（β0.68；95%CI0.03-1.32）和光照暴露（1.99；1.04-2.94）与 PSQI 评分升高有关。夜间体力活动和睡前屏幕观看与睡眠质量无关。总之，减少夜间进食和光照可能有助于改善孕妇的睡眠。
