title: Sleep differences in one-year-old children were related to obesity risks based on their parents' weight according to baseline longitudinal study data.
abstract: OBJECTIVE
  Parental obesity is the predominant risk factor for child obesity. We compared sleep in one-year-old children with different obesity risks, based on parental weight, and explored associations with weight, parental sleep and family factors.
  
  
  METHODS
  Baseline data from 167 families participating in a longitudinal obesity prevention programme was used. Sleep patterns were compared between groups with high and low obesity risks, based on parental weight, and associations between child sleep and weight status, family obesity risk and parental sleep were explored. Sleep was assessed using child sleep diaries and standard parental questionnaires.
  
  
  RESULTS
  Later bedtime, longer sleep onset latency and lower sleep efficiency were observed among children in the high-risk group. Child sleep onset latency was associated with the family obesity risk (β = 0.25, p = 0.001), child bedtime with both maternal (β = 0.33, p < 0.01) and paternal bedtime (β = 0.22, p < 0.05) and child sleep efficiency with maternal sleep quality (β = 0.20, p < 0.01). The child's bedtime was weakly associated with their body mass index (β = 0.17, p < 0.05).
  
  
  CONCLUSIONS
  Sleep differed between one-year-old children with high or low obesity risks, based on their parents' body mass index, and was associated with the family obesity risk and parental sleep. The child's bedtime was weakly associated with their weight status.
authors.affiliation: Department of Learning, Informatics, Management and Ethics, LIME, Medical Management Centre, Karolinska Institutet, Stockholm, Sweden.|Faculty of Health and Life Sciences, Linnaeus University, Kalmar, Sweden.
authors.forename: Mirjam
authors.identifier: http://orcid.org/0000-0002-4108-391X
authors.initials: M
authors.lastname: Ekstedt
authors.affiliation: Division of Medical Imaging, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Mojgan Haji Seyed Ebrahim
authors.initials: MH
authors.lastname: Darkeh
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Xiu
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Michaela
authors.initials: M
authors.lastname: Forssén
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Elin
authors.initials: E
authors.lastname: Johansson
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Anna
authors.initials: A
authors.lastname: Ek
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Viktoria
authors.initials: V
authors.lastname: Svensson
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Kerstin
authors.initials: K
authors.lastname: Ekbom
authors.affiliation: Division of Paediatrics, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: Claude
authors.initials: C
authors.lastname: Marcus
mesh_terms: D015992:Body Mass Index; D001835:Body Weight; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010290:Parents; D063766:Pediatric Obesity / Q000453:epidemiology*; D012307:Risk Factors; D012890:Sleep; D013548:Sweden / Q000453:epidemiology
keywords: Child obesity risk; Parental obesity; Parental sleep; Sleep efficiency; Sleep onset latency