title: [Influence of sedentary behavior on weight retention among postpartum women within one year after childbirth].
abstract: OBJECTIVE
  To identify the risk factors that affect the postpartum weight retention among women and provide evidence for the prevention of obesity and metabolic disorders due to childbirth.
  
  
  METHODS
  The baseline data were collected from 1 220 postpartum women who had given childbirth 42 days ago in Hefei Maternal and Child Health Care Center, Anhui province. Their pre-pregnancy weight, weight gain during pregnancy and childbirth information were obtained from local maternal information management system, and the follow up for the women were conducted at 3, 6, 9, and 12 months after childbirth. The sedentary behaviors of the women were observed. The relationship between postpartum weight retention and sedentary behavior of the women were analyzed by mixed-effects model analysis and repeated measures analysis of variance.
  
  
  RESULTS
  The pre-pregnancy average body weight (kg) of the women was (53.22 ± 6.88), and their postpartum average body weight retention was (7.85 ± 5.11), (7.51 ± 5.40), (5.79 ± 5.18), (4.42 ± 4.91) and (3.26 ± 4.65) at 42 days, 3, 6, 9, 12 months later after childbirth, respectively. The differences in body weight retention at different times after childbirth indicated by repeated measures analysis of variance were statistical significant (P < 0.001). Mixed-effects model analysis showed the postpartum sedentary behavior and postpartum body weight retention was statistically associated after adjusting for pre-pregnancy BMI, feeding pattern, delivery mode and other confounding factors (P < 0.001), Mixed-effects model analysis results tended to be stable after step by step adjustment for confounding factors.
  
  
  CONCLUSIONS
  The results of this study suggested that postpartum sedentary behavior is one of the important factors influencing postpartum weight retention.
authors.affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei 230032, China.
authors.forename: Fengyun
authors.initials: F
authors.lastname: Qin
authors.affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei 230032, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei 230032, China; Email: huchuanlai@ahmu.edu.cn.
authors.forename: Chuanlai
authors.initials: C
authors.lastname: Hu
authors.affiliation: Hefei Municipal Maternal and Child Health Care Center, Hefei 230032, China.
authors.forename: Ziyu
authors.initials: Z
authors.lastname: Shao
authors.affiliation: Hefei Municipal Maternal and Child Health Care Center, Hefei 230032, China.
authors.forename: Renzhi
authors.initials: R
authors.lastname: Ruan
authors.affiliation: Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei 230032, China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
mesh_terms: D001835:Body Weight; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008659:Metabolic Diseases / Q000453:epidemiology; D009765:Obesity / Q000453:epidemiology; D049590:Postpartum Period; D012307:Risk Factors; D057185:Sedentary Behavior; D013997:Time Factors; D015430:Weight Gain