Elizabeth L Adams1, Jennifer S Savage2, Lindsay Master3, Orfeu M Buxton4. 1. Center for Childhood Obesity Research, Penn State University, University Park, PA, United States; Department of Nutritional Sciences, Penn State University, University Park, PA, United States. Electronic address: elizabeth.adams@vcuhealth.org. 2. Center for Childhood Obesity Research, Penn State University, University Park, PA, United States; Department of Nutritional Sciences, Penn State University, University Park, PA, United States. Electronic address: jfs195@psu.edu. 3. Department of Biobehavioral Health, Penn State University, University Park, PA, United States. Electronic address: lindsay.master@gmail.com. 4. Department of Biobehavioral Health, Penn State University, University Park, PA, United States; Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States; Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, MA, United States. Electronic address: orfeu@psu.edu.
Abstract
OBJECTIVE/ BACKGROUND: Clinical recommendations include putting infants to bed using a consistent bedtime routine at an appropriate hour to promote longer nighttime sleep. Actigraphy was used in this exploratory study to examine how bedtime routines and nighttime sleep onset were associated with nighttime total sleep time (TST) and efficiency from 6 to 24 weeks of age. PATIENTS/ METHODS: Infants (n = 24) wore sleep actigraphs for three, one-week periods at 6, 15, and 24 weeks of age. Nighttime TST, sleep efficiency, sleep onset and offset were quantified. Mothers reported on infant bedtime routines using the Brief Infant Sleep Questionnaire at each age. Multilevel models examined between- and within-person associations. RESULTS: As infants aged, sleep onset was earlier, and bedtime routines became shorter (p's < 0.05). Infants fell asleep between 7 and 8:00PM on 24% of the nights. Most mothers (70%) reported that they often fed infants to sleep for the night. For every 1 h earlier in infants' usual sleep onset, nighttime TST was 34.4 min longer that night (p < 0.01). Infants with earlier than usual sleep onset had slightly earlier sleep offset the next morning (8.4 min for every 1 h earlier in onset; p = 0.02). Between-person analyses showed similar patterns. Infants with a more consistent bedtime routine and who were not typically fed to sleep at bedtime had longer nighttime TST at 6 weeks, with a trend or no association at later ages. CONCLUSION: Infants who fell asleep earlier also slept longer at night. Keeping infants up later in hopes of them sleeping in longer may be counterproductive.
OBJECTIVE/ BACKGROUND: Clinical recommendations include putting infants to bed using a consistent bedtime routine at an appropriate hour to promote longer nighttime sleep. Actigraphy was used in this exploratory study to examine how bedtime routines and nighttime sleep onset were associated with nighttime total sleep time (TST) and efficiency from 6 to 24 weeks of age. PATIENTS/ METHODS:Infants (n = 24) wore sleep actigraphs for three, one-week periods at 6, 15, and 24 weeks of age. Nighttime TST, sleep efficiency, sleep onset and offset were quantified. Mothers reported on infant bedtime routines using the Brief Infant Sleep Questionnaire at each age. Multilevel models examined between- and within-person associations. RESULTS: As infants aged, sleep onset was earlier, and bedtime routines became shorter (p's < 0.05). Infants fell asleep between 7 and 8:00PM on 24% of the nights. Most mothers (70%) reported that they often fed infants to sleep for the night. For every 1 h earlier in infants' usual sleep onset, nighttime TST was 34.4 min longer that night (p < 0.01). Infants with earlier than usual sleep onset had slightly earlier sleep offset the next morning (8.4 min for every 1 h earlier in onset; p = 0.02). Between-person analyses showed similar patterns. Infants with a more consistent bedtime routine and who were not typically fed to sleep at bedtime had longer nighttime TST at 6 weeks, with a trend or no association at later ages. CONCLUSION:Infants who fell asleep earlier also slept longer at night. Keeping infants up later in hopes of them sleeping in longer may be counterproductive.
Authors: Yujing Chen; Lizi Lin; Bin Hong; Shamshad Karatela; Wenting Pan; Shengchi Wu; Nu Tang; Yuxuan Wang; Jin Jing; Li Cai Journal: Front Pediatr Date: 2022-01-12 Impact factor: 3.418
Authors: Maristella Lucchini; Monica R Ordway; Margaret H Kyle; Nicolò Pini; Jennifer R Barbosa; Ayesha Sania; Lauren C Shuffrey; Cristina R Fernández; William P Fifer; Carmela Alcántara; Catherine E Monk; Dani Dumitriu Journal: Sleep Health Date: 2022-08-13