Journal article

Accelerometer use in young people with Down syndrome: A preliminary cross-validation and reliability study

Casey L Peiris, Toby B Cumming, Sharon Kramer, Liam Johnson, Nicholas F Taylor, Nora Shields

JOURNAL OF INTELLECTUAL & DEVELOPMENTAL DISABILITY | ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD | Published : 2017

Abstract

Background Inadequate physical activity is a problem for people with Down syndrome and objective monitoring using accelerometers may be inaccurate in this population. Method This was a cross-validation and reliability study comparing two triaxial accelerometers (the SenseWear and RT3) to a criterion measure (the OxyCon Mobile) in 10 young people (M age = 20 ± 2) with Down syndrome. A ROC curve analysis was conducted to determine intensity thresholds from RT3 activity counts. Results During self-selected pace walking, the accelerometers overestimated energy expenditure and had large limits of agreement (SenseWear: −0.5–3.6 METs; RT3: −0.2–2.7 METs). At this pace, SenseWear armband step counts..

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Grants

Funding Acknowledgements

This research was funded by the La Trobe University Physical Activity and Rehabilitation research group, Faculty of Health Science, La Trobe University, Melbourne, Australia. This group did not impose any restrictions on free access to, or publication of, the research data.