title: Parent's Physical Activity Associated With Preschooler Activity in Underserved Populations.
abstract: BACKGROUND
  In the U.S., children from low-income families are more likely to be obese. The impact of parent modeling of physical activity (PA) and sedentary behaviors in low-income American ethnic minorities is unclear, and studies examining objective measures of preschooler and parent PA are sparse.
  
  
  METHODS
  This cross-sectional study examined 1,003 parent-child pairs who were of low income, largely Latino and African American, and living in one of two geographically disparate metropolitan areas in the U.S. Parents and children wore GT3X/GT3X+ accelerometers for an average of >12 hours/day (7:00am-9:00pm) for 1 week (September 2012 to May 2014). Analysis occurred in 2015-2016.
  
  
  RESULTS
  About 75% of children were Latino and >10% were African American. Mean child age was 3.9 years. The majority of children (60%) were normal weight (BMI ≥50th and <85th percentiles), and more than a third were overweight/obese. Children's total PA was 6.03 hours/day, with 1.5 hours spent in moderate to vigorous PA (MVPA). Covariate-adjusted models showed a monotonic, positive association between parent and child minutes of sedentary behavior (β=0.10, 95% CI=0.06, 0.15) and light PA (β=0.06; 95% CI=0.03, 0.09). Child and parent MVPA were positively associated up to 40 minutes/day of parent MVPA, but an inverse association was observed when parental MVPA was beyond 40 minutes/day (p=0.002).
  
  
  CONCLUSIONS
  Increasing parental PA and reducing sedentary behavior correlate with increased PA-related behaviors in children. However, more work is needed to understand the impact of high levels of parental MVPA on the MVPA levels of their children.
authors.affiliation: Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee. Electronic address: shari.barkin@vanderbilt.edu.
authors.forename: Shari L
authors.initials: SL
authors.lastname: Barkin
authors.affiliation: Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors.forename: Archana P
authors.initials: AP
authors.lastname: Lamichhane
authors.affiliation: Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California.
authors.forename: Jorge A
authors.initials: JA
authors.lastname: Banda
authors.affiliation: Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
authors.forename: Meghan M
authors.initials: MM
authors.lastname: JaKa
authors.affiliation: Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee.
authors.forename: Maciej S
authors.initials: MS
authors.lastname: Buchowski
authors.affiliation: Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors.forename: Kelly R
authors.initials: KR
authors.lastname: Evenson
authors.affiliation: Department of Biostatistics, the University of North Carolina at Chapel Hill, Gillings School of Global Public Health, Chapel Hill, North Carolina.
authors.forename: Shrikant I
authors.initials: SI
authors.lastname: Bangdiwala
authors.affiliation: Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, Maryland.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Pratt
authors.affiliation: Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota.
authors.forename: Simone A
authors.initials: SA
authors.lastname: French
authors.affiliation: Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
authors.forename: June
authors.initials: J
authors.lastname: Stevens
mesh_terms: D061725:Accelerometry; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D010290:Parents / Q000523:psychology*; D057185:Sedentary Behavior; D035862:Vulnerable Populations