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Exploring Factors Associated With Accelerometer Validity Among Ethnically Diverse Toddlers.

Christine Crumbley1, Aliye B Cepni1, Ashley Taylor2

  • 1Department of Health and Human Performance, University of Houston, Houston, TX,USA.

Pediatric Exercise Science
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Summary
This summary is machine-generated.

Accelerometer wear time and activity log completion in toddlers are challenging. Marital support may improve adherence to physical activity study protocols, though data quality remains a concern.

Keywords:
ActiGraphactivity logphysical activity

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Area of Science:

  • Pediatric physical activity measurement
  • Behavioral science in research compliance

Background:

  • Accurate measurement of physical activity in toddlers using accelerometers is hindered by poor compliance with wear time and activity log instructions.
  • Understanding factors influencing compliance is crucial for improving the validity of research findings.

Purpose of the Study:

  • To investigate the relationship between wear time and activity log completion with demographic, socioeconomic, and parenting style variables in toddlers.
  • To determine if sedentary time in toddlers differs based on activity log completion.

Main Methods:

  • Secondary analysis of baseline data from a randomized controlled trial involving parents and toddlers (12-35 months).
  • Toddlers wore ActiGraph wGT3x accelerometers, and parents completed activity logs.
  • Valid days required at least 600 minutes of wear time; analyses included ANOVA and chi-square tests.

Main Results:

  • Fifty families participated; 56% submitted valid accelerometer data with activity logs.
  • Participants in relationships were more likely to complete activity logs (P < .05).
  • No significant difference in toddler sedentary time was found between those with and without completed activity logs.

Conclusions:

  • Compliance with wear time and activity log completion varied, with poor returned activity log quality impacting data validity.
  • Marital support appears to be a significant factor in adherence to study protocols for physical activity research in toddlers.
  • Improved strategies are needed to enhance compliance and data quality in accelerometer-based physical activity studies.