Associations between parent-reported sleep duration and adiposity in Chinese early adolescents

Jiang, Yanrui; Spruyt, Karen; Chen, W.J.; Mei, Hao; Sun, Wanning; Wang, Y.; Li, S.H.; Luo, Zengyou; Shen, Xiaoming; Fan, Jian‐Gao

doi:10.1093/pubmed/fdu049

Cited by 13 publications

(12 citation statements)

References 39 publications

(58 reference statements)

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“…The mean sleep duration in this study (9.61 h) was very similar to that previously reported in similar aged Chinese children (9.46 h), 14 but the duration in our study was at the low end of that recommended for this age group 21 and lower than that reported for children of similar ages in Western countries. An American study reported a mean sleep duration of 10.15 h in elementary school children (kindergarten through to grade 4), 22 and a Swiss study reported a mean sleep duration of 10.2 h in 10-year-old children.…”

Section: Discussionsupporting

confidence: 89%

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Prevalence of adiposity and its association with sleep duration, quality, and timing among 9–12-year-old children in Guangzhou, China

Wang

Adab

Liu³

et al. 2017

Journal of Epidemiology

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BackgroundShort sleep duration has been reported to be associated with obesity in children, but findings are not consistent. Since few studies have examined the relationship between more complex sleep characteristics and obesity, we examined the association between adiposity and self-reported sleep duration, bedtime, and sleep quality in 9–12-year-old Chinese children using multilevel mixed models.Methods5518 children aged 9–12 years were recruited from 29 randomly selected primary schools in Guangzhou, China in 2014. Standardized questionnaires were used to obtain data to estimate sleep duration on typical weekdays and weekends. Sleep quality data were collected using the Children's Sleep Habits Questionnaire (CSHQ). Trained researchers undertook measurements of weight, height, and waist circumference (WC) for all participating children. Body mass index (BMI) z-scores were derived using the World Health Organization (WHO) child growth reference, and children were classified as overweight or obese using +1 and +2 SD as cut-offs, respectively. Percentage body fat (BF%) was calculated using bioelectrical impedance.ResultsLonger sleep duration was inversely associated with BMI z-score (β = −0.16, p < 0.05), WC (β = −1.11, p < 0.05) and later bedtime was associated with higher BMI z-score (β = 0.03, p < 0.05), WC (β = 1.72, p < 0.001), and BF% (β = 0.15, p < 0.05) in multivariable multilevel mixed models, after adjustment for age, gender, physical activity, parental education level, and average monthly income. No association was seen between sleep quality and adiposity.ConclusionShorter sleep duration and later bedtime are associated with higher adiposity indices in early adolescents from southern China.

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Section: Discussionsupporting

confidence: 89%

“… 13 However, few studies have been conducted on the relationship between more complex sleep characteristics and different obesity indices in China. One study has been undertaken in Shanghai 14 on early adolescents, which found that short sleep duration was associated with higher adiposity indices.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of adiposity and its association with sleep duration, quality, and timing among 9–12-year-old children in Guangzhou, China

Wang

Adab

Liu³

et al. 2017

Journal of Epidemiology

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“…There was also some evidence for gender patterning: with nine of the 103 reviewed articles reporting on sleep duration indicating the association between sleep duration and Ow/Ob as significant among boys only ; while three reported it as significant among girls only; and one reported mixed results across genders, as mentioned above …”

Section: Resultsmentioning

confidence: 90%

“…Overall, there was strong evidence in support of an inverse associa- 44,77,128 ; and one reported mixed results across genders, as mentioned above. 47 Expanded notes on findings can be found in Table S3.…”

Section: Sleep Durationmentioning

confidence: 90%

Sleep and obesity among children: A systematic review of multiple sleep dimensions

et al. 2020

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Summary The objectives were to systematically investigate the multiple dimensions of sleep and their association with overweight or obesity among primary school‐aged children. CINHAL, PsycINFO, SPORTDiscus, Medline, Cochrane, Embase, and PubMed databases were searched for papers reporting on an association between children's sleep and weight status. Studies on clinical populations, published in languages other than English, without objectively measured weight status, or where weight status was reported outside the outlined age bracket (5‐13 years) were excluded. A total of 34 248 citations were extracted from our systematic search protocol, of which 112 were included for detailed review. Compared with sleep duration, of which 86/103 articles found a significant inverse association between sleep duration and measured weight status, few studies examined other dimensions of sleep, such as quality, efficiency and bed/wake times, and relationship with weight status. Where studies existed, variation in defining and measurement of these dimensions restricted comparison and potentially influenced discrepancies across results. Overall, the findings of this review warrant the need for further research of the outlined dimensions of sleep. Future research would benefit from clarity on definitions across the different dimensions, along with the use of valid and reliable tools.

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“…Another cohort study including adolescents found no longitudinal association between sleep duration and body fat percentage in both sexes; however, in the cross-sectional analyses at 17 years a positive association was found among girls only [ 28 ]. Similarly, two cross-sectional studies showed a positive association between sleep duration and body fat percentage in female adolescents only [ 29 , 30 ]. On the other hand, a longitudinal study found no relationship between total sleep and BMI or body fat percentage in either boys and girls [ 31 ].…”

Section: Discussionmentioning

confidence: 93%

Sleep Duration Trajectories and Body Composition in Adolescents: Prospective Birth Cohort Study

et al. 2016

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We aimed to estimate the association between sleep duration trajectories and body composition in adolescents. We used data from participants of the 1993 Pelotas (Brazil) Birth Cohort Study who were later followed up at age 18 years (response rate of 81.3%). At the time, 3974 adolescents had complete data on body composition, which was assessed by air displacement plethysmography. Sleep duration was self-reported by participants at ages 11 and 18 years. Analyses were sex-stratified. The mean sleep duration at 11 years was 9.7 (SD 1.4) and 8.4 (SD 1.9) at 18 years. Sleep duration was dichotomized as inadequate (<8 hours/day) or adequate (≥8 hours/day). Mean body mass, fat mass, and fat-free mass indices at 18 years were 23.4 kg/m2 (SD 4.5), 6.1 kg/m2 (SD 3.9) and 17.3 kg/m2 (SD 2.5), respectively. Girls who reported inadequate sleep duration at 11 years of age, but adequate sleep duration at 18, on average experienced an increase in body mass index (β = 0.39 z-scores; 95% CI 0.13, 0.65), fat mass index (β = 0.30 z-scores; 95% CI 0.07, 0.53), and fat-free mass index (β = 0.24 z-scores; 95% CI 0.08, 0.39) compared to those who had adequate sleep duration at both time points. The results suggest that changes in sleep duration across adolescence may impact body composition in later adolescence and that this may differ by sex.

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Associations between parent-reported sleep duration and adiposity in Chinese early adolescents

Abstract: Short sleep duration was associated with higher adiposity indices in early adolescents from China, especially in girls. Interventions focusing on modifying adolescents' sleep habits may potentially prevent obesity and overweight.

Cited by 13 publications

References 39 publications

Prevalence of adiposity and its association with sleep duration, quality, and timing among 9–12-year-old children in Guangzhou, China

Prevalence of adiposity and its association with sleep duration, quality, and timing among 9–12-year-old children in Guangzhou, China

Sleep and obesity among children: A systematic review of multiple sleep dimensions

Sleep Duration Trajectories and Body Composition in Adolescents: Prospective Birth Cohort Study

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