Study on the correlation between pre-pregnancy day nap and sleep duration in the third trimester of pregnancy on fatigue

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Chinese Journal of Reproductive Health ›› 2022, Vol. 33 ›› Issue (2) : 135-140.

SHAN Ligang, LI Cunbao, MA Duo, ZHANG Lijuan, GAO Aimin

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Abstract

Objective To explore the effects of prepregnancy day nap and sleep duration in the third trimester on the fatigue of healthy pregnant women. Methods 490 pregnant women in the third trimester during January to December 2020 were collected from the Second Affiliated Hospital of Medical College of Xiamen University. Demographic information and general clinical data were collected. The effective sleep duration of prepregnancy day nap and night sleep in the third trimester were recorded. Three cases with missing sleep duration were excluded and 487 samples were included in the final analysis. Two groups were divided as nap group who had nap before pregnancy (n=332) and no nap group (n=141), nocturnal sleep ≤ 7 h (n=165) and nocturnal sleep > 7 h (n=308) were further divided according to the recommendations of the National Sleep Foundation of the United States (7 h as the boundary point). Information on general characteristics by group was investigated. Fatigue Scale-14 (FS-14) was used to quantify the fatigue degree of women in the third trimester of pregnancy. The scores were sorted into three categories:total score, physical fatigue score and mental fatigue score. The interaction of nap and night sleep duration effect, the difference of different main effects and the correlation between night sleep duration and FS-14 score were analyzed. Results There was significant difference in FS-14 total score, FS-14 physical fatigue score, however, no significant difference in FS-14 mental fatigue score. The total score of FS-14, physical fatigue score and mental fatigue score of pregnant women without nap and sleep at night ≤ 7 h were the highest, and the mean value of the three scores of pregnant women without nap and sleep at night > 7 h was the lowest. The total fatigue score and physical fatigue score were lower when the sleep duration was more than 7 h, whether or not taking a nap before pregnancy. Conclusion Prepregnancy nap and the current length of night sleep will affect the fatigue of pregnant women, especially affect physical fatigue; Taking a nap before pregnancy, night sleep >7 h is helpful to alleviate the fatigue of pregnant women.

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pre-pregnancy nap / sleep duration / the third trimester / fatigue

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SHAN Ligang, LI Cunbao, MA Duo, ZHANG Lijuan, GAO Aimin. Study on the correlation between pre-pregnancy day nap and sleep duration in the third trimester of pregnancy on fatigue[J]. Chinese Journal of Reproductive Health, 2022, 33(2): 135-140

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