Associations Between Sleep and Metabolic Outcomes in Preadolescent Children

Growing evidence suggests an important role for sleep for the metabolic health of children. We aimed to determine how sleep is related to insulin sensitivity, insulin secretion, beta-cell function, and adiposity (BMI z-scores, body fat %, waist to height ratio) using objectively measured sleep and o...

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Bibliographic Details
Published in:	Journal of the Endocrine Society Vol. 6; no. 11; p. bvac137
Main Authors:	Alves, Jasmin Marie, Chow, Ting, Nguyen-Rodriguez, Selena, Angelo, Brendan, Defendis, Alexis, Luo, Shan, Smith, Alexandro, Yunker, Alexandra Grace, Xiang, Anny H, Page, Kathleen Alanna
Format:	Journal Article
Language:	English
Published:	United States Oxford University Press 11-10-2022
Subjects:	Body mass index Children Dextrose Exercise Glucose Glucose tolerance tests Health aspects Health maintenance organizations Insulin Insulin resistance Mediation Type 2 diabetes sleep insulin sensitivity adiposity preadolescence actigraphy
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Summary:	Growing evidence suggests an important role for sleep for the metabolic health of children. We aimed to determine how sleep is related to insulin sensitivity, insulin secretion, beta-cell function, and adiposity (BMI z-scores, body fat %, waist to height ratio) using objectively measured sleep and oral glucose tolerance test (OGTT)-derived measures. Sixty-two children aged 7-11 years, born at Kaiser Permanente Southern California, wore wrist accelerometers for 7 days to objectively measure sleep, completed an OGTT, and had anthropometric measures (height [cm], weight [kg], waist [cm], body fat [%]) collected. Using linear regression, associations between Matsuda insulin sensitivity index (ISI), insulinogenic index (IGI), disposition index (DI), BMI z-score, waist to height ratio, and body fat % with sleep parameters [total sleep time (TST; min), sleep efficiency (SE; %), time in bed (TIB; min), wake after sleep onset (WASO; min), and sleep latency (SL; min)] were assessed. Body fat % was tested as a mediator of the relationship between TST and ISI. Longer TST was associated with better insulin sensitivity ( = 0.02), but not after adjusting for body fat %. Sleep parameters were not associated with IGI or DI. Longer TST was associated with lower % body fat ( = 0.01) and lower waist-to-height-ratios ( = 0.05). Body fat % explained 62% ( = 0.01) of the relationship between TST and ISI. Longer TIB was associated with lower adiposity measures ( < 0.05). There were no associations between SE, WASO, or SL and metabolic outcomes. Objectively measured sleep duration was associated with lower adiposity, and the relationship between sleep duration and ISI appeared partly through adiposity levels in preadolescent children. Longer sleep duration may be important for metabolic health.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2472-1972 2472-1972
DOI:	10.1210/jendso/bvac137