Accuracy of Multisensor Activity Monitors in Normal Versus High BMI African American Children.

Research output: Contribution to journalArticle

Abstract

BACKGROUND:

Overweight children show different movement patterns during walking than normal-weight children, suggesting the accuracy of multisensory activity monitors may differ in these groups.
METHODS:

Eleven normal and 15 high BMI African American children walked at 2, 4, 5, and 6 km/h on a treadmill wearing the Intelligent Device for Energy Expenditure and Activity (IDEEA) and SenseWear (SW). Accuracy was determined using indirect calorimetry and manually counted steps as references.
RESULTS:

For IDEEA, no significant differences in accuracy were observed between BMI groups for energy expenditure (EE), but differences were significant by speed (+15% at 2 km/h to -10% at 6 km/h). For SW, EE accuracy was significantly different for high (+21%) versus normal BMI girls (-13%) at 2 km/h. For high BMI girls, EE was overestimated at low speed and underestimated at higher speeds. Underestimations in steps did not differ by BMI group at 4 to 6 km/h, but were significantly larger at 2 km/h than at the other speeds for all groups with IDEEA, and for normal BMI children with SW.
CONCLUSIONS:

Similar accuracies during walking may be expected in normal and overweight children using IDEEA and SW. Both monitors showed small errors for steps provided speed exceeded 2 km/h.

Details

Authors
  • Daniel Arvidsson
  • Mark Fitch
  • Mark L Hudes
  • Sharon E Fleming
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Sport and Fitness Sciences
Original languageEnglish
Pages (from-to)1124-1134
JournalJournal of Physical Activity & Health
Volume8
Issue number8
StatePublished - 2011
Peer-reviewedYes