Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep

Abstract The purpose of the present study is to examine the association between toddlers' sleep arrangements and their nighttime sleep duration and other sleep variables. For this investigation, we performed a study in which child activity and sleep levels were recorded using actigraphy. The pa...

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Main Authors: Machiko Nakagawa, Hidenobu Ohta, Rinshu Shimabukuro, Yoko Asaka, Takayo Nakazawa, Yoshihisa Oishi, Michio Hirata, Akiko Ando, Takashi Ikeda, Yuko Yoshimura, Yusuke Mitani, Yousuke Kaneshi, Keita Morioka, Rika Fukutomi, Kyoko Kobayashi, Miwa Ozawa, Masahiro Takeshima, Kazuo Mishima, Mitsuru Kikuchi, Kazutoshi Cho, Hitoshi Yoda, Isao Kusakawa
Format: Article
Language:English
Published: Nature Publishing Group 2021-02-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-81970-6
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spelling doaj-e0bbac608a4545d3a7043e8b0d3a83202021-02-07T12:35:30ZengNature Publishing GroupScientific Reports2045-23222021-02-011111910.1038/s41598-021-81970-6Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleepMachiko Nakagawa0Hidenobu Ohta1Rinshu Shimabukuro2Yoko Asaka3Takayo Nakazawa4Yoshihisa Oishi5Michio Hirata6Akiko Ando7Takashi Ikeda8Yuko Yoshimura9Yusuke Mitani10Yousuke Kaneshi11Keita Morioka12Rika Fukutomi13Kyoko Kobayashi14Miwa Ozawa15Masahiro Takeshima16Kazuo Mishima17Mitsuru Kikuchi18Kazutoshi Cho19Hitoshi Yoda20Isao Kusakawa21Department of Pediatrics, St. Luke’s International HospitalDepartment of Neuropsychiatry, Akita University Graduate School of MedicineDepartment of Pediatrics, St. Luke’s International HospitalFaculty of Health Sciences, Hokkaido UniversityMaternity and Perinatal Care Center, Hokkaido University HospitalDepartment of Pediatrics, Japanese Red Cross Medical CenterDepartment of Pediatrics, St. Luke’s International HospitalMaternity and Perinatal Care Center, Hokkaido University HospitalResearch Center for Child Mental Development, Kanazawa UniversityResearch Center for Child Mental Development, Kanazawa UniversityDepartment of Pediatrics, Kanazawa UniversityMaternity and Perinatal Care Center, Hokkaido University HospitalMaternity and Perinatal Care Center, Hokkaido University HospitalPediatric Nursing, Graduate School of Nursing Science, St. Luke’s International UniversityPediatric Nursing, Graduate School of Nursing Science, St. Luke’s International UniversityDepartment of Pediatrics, St. Luke’s International HospitalDepartment of Neuropsychiatry, Akita University Graduate School of MedicineDepartment of Neuropsychiatry, Akita University Graduate School of MedicineResearch Center for Child Mental Development, Kanazawa UniversityMaternity and Perinatal Care Center, Hokkaido University HospitalDepartment of Neonatology, Toho University Omori Medical CenterDepartment of Pediatrics, St. Luke’s International HospitalAbstract The purpose of the present study is to examine the association between toddlers' sleep arrangements and their nighttime sleep duration and other sleep variables. For this investigation, we performed a study in which child activity and sleep levels were recorded using actigraphy. The parents of 1.5-year-old toddlers (n = 106) were asked to attach an actigraphy unit to their child’s waist with an adjustable elastic belt and complete a sleep diary for 7 consecutive days. Questionnaires were used to assess the sleep arrangements of the toddlers. There was a significant negative correlation between nap duration and nighttime sleep duration, suggesting that longer nap sleep induces shorter nighttime sleep duration. Among the sleep arrangements, such as nighttime breastfeeding or co-sleeping, only nighttime breastfeeding predicted shorter nighttime sleep duration. Our findings indicate that shorter naps induce a longer nighttime sleep in 1.5-year-old toddlers while nighttime breastfeeding decreases their nighttime sleep duration.https://doi.org/10.1038/s41598-021-81970-6
collection DOAJ
language English
format Article
sources DOAJ
author Machiko Nakagawa
Hidenobu Ohta
Rinshu Shimabukuro
Yoko Asaka
Takayo Nakazawa
Yoshihisa Oishi
Michio Hirata
Akiko Ando
Takashi Ikeda
Yuko Yoshimura
Yusuke Mitani
Yousuke Kaneshi
Keita Morioka
Rika Fukutomi
Kyoko Kobayashi
Miwa Ozawa
Masahiro Takeshima
Kazuo Mishima
Mitsuru Kikuchi
Kazutoshi Cho
Hitoshi Yoda
Isao Kusakawa
spellingShingle Machiko Nakagawa
Hidenobu Ohta
Rinshu Shimabukuro
Yoko Asaka
Takayo Nakazawa
Yoshihisa Oishi
Michio Hirata
Akiko Ando
Takashi Ikeda
Yuko Yoshimura
Yusuke Mitani
Yousuke Kaneshi
Keita Morioka
Rika Fukutomi
Kyoko Kobayashi
Miwa Ozawa
Masahiro Takeshima
Kazuo Mishima
Mitsuru Kikuchi
Kazutoshi Cho
Hitoshi Yoda
Isao Kusakawa
Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
Scientific Reports
author_facet Machiko Nakagawa
Hidenobu Ohta
Rinshu Shimabukuro
Yoko Asaka
Takayo Nakazawa
Yoshihisa Oishi
Michio Hirata
Akiko Ando
Takashi Ikeda
Yuko Yoshimura
Yusuke Mitani
Yousuke Kaneshi
Keita Morioka
Rika Fukutomi
Kyoko Kobayashi
Miwa Ozawa
Masahiro Takeshima
Kazuo Mishima
Mitsuru Kikuchi
Kazutoshi Cho
Hitoshi Yoda
Isao Kusakawa
author_sort Machiko Nakagawa
title Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
title_short Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
title_full Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
title_fullStr Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
title_full_unstemmed Daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
title_sort daytime nap and nighttime breastfeeding are associated with toddlers’ nighttime sleep
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2021-02-01
description Abstract The purpose of the present study is to examine the association between toddlers' sleep arrangements and their nighttime sleep duration and other sleep variables. For this investigation, we performed a study in which child activity and sleep levels were recorded using actigraphy. The parents of 1.5-year-old toddlers (n = 106) were asked to attach an actigraphy unit to their child’s waist with an adjustable elastic belt and complete a sleep diary for 7 consecutive days. Questionnaires were used to assess the sleep arrangements of the toddlers. There was a significant negative correlation between nap duration and nighttime sleep duration, suggesting that longer nap sleep induces shorter nighttime sleep duration. Among the sleep arrangements, such as nighttime breastfeeding or co-sleeping, only nighttime breastfeeding predicted shorter nighttime sleep duration. Our findings indicate that shorter naps induce a longer nighttime sleep in 1.5-year-old toddlers while nighttime breastfeeding decreases their nighttime sleep duration.
url https://doi.org/10.1038/s41598-021-81970-6
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