Assessing the Influence of Sleep-Wake Variables on Body Mass Index (BMI) in Adolescents

Christoph Randler, Julia Haun, Steffen Schaal

Abstract


Recent work has established an association between overweight/obesity and sleep duration, suggesting that short sleep duration and timing of sleeping may lead to overweight. Most of these studies considered sleep-length rather than any other aspects associated with the sleep and wake rhythm, e.g. chronotype, which is a measure of timing of sleeping (‘when to sleep’; based on the midpoint of sleep). The objective of this study was to assess the influence of different factors of the sleep-wake cycle and of co-variates on the Body Mass Index in a cross-sectional questionnaire study. Nine hundred and thirteen pupils (406 boys, 507 girls) from Southwestern Germany participated in this study. Mean age was 13.7 ± 1.5 (SD) years and range was between 11 – 16 years. We found that chronotype (β = .079) and social jetlag (β = .063) showed a significant influence on Body Mass Index (BMI), while sleep duration did not. Social jetlag is the absolute difference between mid-sleep time on workdays and free days. Further, screen time (in front of TV, computer, β = .13) was positively related with BMI. Self-efficacy on nutrition (β = -.11), a psychological variable important in health-behaviour models, showed an influence with high scores on self-efficacy related to lower BMI. A high BMI was correlated with low fast-food consumption (β = -.12) suggesting that adolescents with high BMI may exert some control over their eating.


Keywords


adolescents; biological rhythms; chronotype; sleep duration; self-efficacy; screen time; overweight

Full Text: PDF HTML

https://doi.org/10.5964/ejop.v9i2.558

Citing articles (via Crossref)

  • Michael R. Dolsen, James K. Wyatt, Allison G. Harvey (2018)
    Sleep, Circadian Rhythms, and Risk Across Health Domains in Adolescents With an Evening Circadian Preference
    Journal of Clinical Child & Adolescent Psychology, p. 1(ff.)
    doi: 10.1080/15374416.2017.1416620
  • YangChang Zhang, DengYuan Liu, LuLu Sheng, Hong Xiao, MeiQi Yao, YiMing Chao, Yong Zhao (2017)
    Chronotype and sleep duration are associated with stimulant consumption and BMI among Chinese undergraduates
    Sleep and Biological Rhythms
    doi: 10.1007/s41105-017-0142-6
  • Alison L. Miller, Julie C. Lumeng, Monique K. LeBourgeois (2015)
    Sleep patterns and obesity in childhood
    Current Opinion in Endocrinology & Diabetes and Obesity, 22(1), p. 41(ff.)
    doi: 10.1097/MED.0000000000000125
  • Susan Kohl Malone, Babette Zemel, Charlene Compher, Margaret Souders, Jesse Chittams, Aleda Leis Thompson, Allan Pack, Terri H. Lipman (2016)
    Social jet lag, chronotype and body mass index in 14–17-year-old adolescents
    Chronobiology International, 33(9), p. 1255(ff.)
    doi: 10.1080/07420528.2016.1196697