Development and feasibility of a wearable infant wrist band for the objective measurement of physical activity using

Alessandra Prioreschi1, Thomas Nappey2, Kate Westgate3

  • 11MRC/WITS Developmental Pathways for Health Research Unit, Department of Paediatrics, School of Clinical Medicine, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa.

Insights

A new wearable wristband accurately measures infant and toddler physical activity. Caregivers found the device feasible and acceptable for monitoring young children's movement.

Area of Science:

  • Pediatrics
  • Biomedical Engineering
  • Public Health

Background:

  • Reliable measurement of infant and toddler physical activity is crucial for assessing guideline adherence and understanding developmental impacts.
  • Current methods may lack feasibility or accuracy for this age group.
  • Developing accurate and user-friendly tools is essential for early life health research.

Purpose of the Study:

  • To develop and evaluate a novel infant wearable wrist-worn band for physical activity measurement.
  • To assess the feasibility of using data from the wearable band for observational physical activity measurement.
  • To determine caregiver-reported acceptability of the infant wearable wrist band.

Main Methods:

  • A final wearable band design was created to house an Axivity AX3 monitor.
  • 152 mother-infant/toddler pairs (3-24 months) participated, with infants wearing the band for 1 week.
  • Feasibility was assessed through data reliability, wear time compliance, and caregiver acceptability questionnaires.

Main Results:

  • Technical reliability of the monitors was good, with 94% of participants providing sufficient valid data.
  • Most mothers (60%) reported being "very happy" with the device's safety.
  • Caregivers rated the band's comfort highly (80% "comfortable", 10% "very comfortable").

Conclusions:

  • The developed infant wearable band is a feasible and acceptable tool for measuring physical activity in infants and toddlers.
  • High compliance rates indicate the practicality of using this device in research.
  • This provides a replicable, comfortable, and acceptable method for monitoring early childhood physical activity.
Abstract

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