Center%20for%20Child%20Health,%20Behavior%20and%20Development

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Center for Child Health, Behavior and Development

• School and community-based approaches for
  physical activity and nutrition interventions

Jan 2015 Nutritional Sciences Program Research
Overview
Jason A. Mendoza, MD, MPH Associate Professor of
Pediatrics University of Washington
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Cluster RCT of the WSB program

• Long-term, efficacy trial, 2012-2017
• n22 schools and n400 students
• 4 schools in Year 1
• 6 schools each in Years 2-4
• 3rd-5th graders
• low income schools, matched by school SES and
  ethnicity
• Intervention WSB program led by staff
• offered 5 days/week, students decide when to
  walk
• start Sept/Oct and end in April/May of each
  study year

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Walking school bus

• A group of children led to school by
  parents/adults who walk together along a set
  route (active commuting)
• Addresses safety concerns supervised period of
  physical activity and pedestrian safety teaching
• Pedestrian safety is modeled and taught

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Cluster RCT of the WSB program

• Primary outcome weekly rate of ACS
• Secondary outcomes
• MVPA (accelerometers)
• BMI z-score
• Pedestrian safety behaviors
• Moderators and mediators
• Walkability/built environment (Chanam Lee, Texas
  AM and Anne Vernez Moudon, University of
  Washington)
• Parent/child self-efficacy and parent outcome
  expectations
• Partners Seattle Federal Way Public Schools,
  Feet First

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Pilot Bicycle Train RCT

• Specific Aims
• Validate algorithms examining concurrent
  accelerometry and GPS data to measure childrens
  physical activity intensity and duration while
  cycling vs. heart rate monitoring and direct
  observation
• Evaluate among 4th and 5th grade ethnic minority
  children (n60) the feasibility of a pilot
  cluster RCT of a Bicycle Train program
• Recruitment
• Participation
• Barriers/Facilitators
• Partners SPS, Cascade Bicycle Club, Bike Works

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Other research projects

• Reducing TV viewing to prevent obesity in
  Hispanic preschool children
• Current Nutrition MS student, Catherine Karlak,
  is leading analyses on TV parenting practices
• Thesis Examining correlates of TV parenting
  practices among Latino preschoolers in Head
  Start.

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Other research projects

• The role of food insecurity (FI) on CD4 counts
  among pediatric HIV patients
• Adolescents and young adults in Houston, TX
• Mendoza JA, Paul ME, Schwarzwald H, et al. Food
  Insecurity, CD4 Counts, and Incomplete Viral
  Suppression Among HIV Patients from Texas
  Childrens Hospital A Pilot Study. AIDS and
  Behavior. 201317(5)1683-1687
• 2-6 year old children in Gaborone, Botswana
• Mendoza JA, Matshaba M, Makhanda J, Liu Y,
  Boitshwarelo M, Anabwani GM. Food Insecurity and
  CD4 Among HIV Children in Gaborone, Botswana.
  Journal of acquired immune deficiency syndromes.
  201466(4)414-418
• Future studies
• Cohort study longitudinal relationship between
  FI and CD4 counts
• Intervention stud(ies) to decrease food
  insecurity and evaluate impact on CD4 counts

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Other research projects

• Title Food insecurity and clinical outcomes
  among children with type 1 diabetes mellitus
• Specific Aim Examine the association of food
  insecurity with HbA1c and healthcare utilization
• Ancillary study to the SEARCH for Diabetes in
  Youth study
• Data collection ongoing through Spring 2014

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Other research projects

• Title A wearable mHealth device to promote
  physical activity among adolescents
• Pilot studys aim is to assess feasibility
• Intervention Fitbit Flex customized Facebook
  group page
• Goal 12k steps/day or gradual increase towards
  target
• Rewards/badges
• Planning to adapt for other populations, e.g.
  pediatric cancer survivors, teens with ADHD to
  decrease symptoms

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Questions?
jason.mendoza_at_seattlechildrens.org