Validation of a multi-sensor armband during free-living activity in adults with cystic fibrosis

Narelle S Cox; Jennifer A Alison; Brenda M Button; John W Wilson; Judith M Morton; Leona M Dowman; Anne E Holland

doi:10.1016/j.jcf.2013.11.008

Validation of a multi-sensor armband during free-living activity in adults with cystic fibrosis

J Cyst Fibros. 2014 May;13(3):347-50. doi: 10.1016/j.jcf.2013.11.008. Epub 2013 Dec 27.

Authors

Narelle S Cox¹, Jennifer A Alison², Brenda M Button³, John W Wilson⁴, Judith M Morton⁵, Leona M Dowman⁶, Anne E Holland⁷

Affiliations

¹ School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia. Electronic address: nscox@students.latrobe.edu.au.
² Discipline of Physiotherapy, Faculty of Health Sciences, University of Sydney, Australia; Department of Physiotherapy, Royal Prince Alfred Hospital, Australia.
³ Department of Physiotherapy, Alfred Hospital, Australia; Department of Medicine, Alfred Campus, Monash University, Australia; Department of AIRmed, Alfred Hospital, Australia.
⁴ Department of Medicine, Alfred Campus, Monash University, Australia; Department of AIRmed, Alfred Hospital, Australia.
⁵ Department of Respiratory Medicine, Monash Health, Australia; Department of Medicine, Monash Campus, Monash University, Australia.
⁶ School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia.
⁷ School of Physiotherapy, Faculty of Health Sciences, La Trobe University, Australia; Department of Physiotherapy, Alfred Hospital, Australia.

PMID: 24374296
DOI: 10.1016/j.jcf.2013.11.008

Abstract

Background: The SenseWear Armband (SWA) provides simple and non-invasive measures of energy expenditure (EE) during physical activity, however its accuracy in adults with cystic fibrosis (CF) during free living physical activities has not been established.

Methods: 26 CF adults (mean FEV1 63% predicted; 11 males) completed a series of standardised static and active tasks with simultaneous analysis of EE via the SWA and indirect calorimetry (IC).

Results: Mean difference and limits of agreement between EE values from the SWA and IC across all activities were -0.02METs (95% CI -1.1 to 1.1). There was moderate agreement between the two measures (ICC 0.4; 95% CI: 0 to 0.7; p=0.03). For individual activity tasks ICC ranged from 0.1 to 0.6.

Conclusion: Overall, the SWA demonstrated good agreement with IC for EE estimates in CF adults during a series of free-living activities, however accuracy was variable when assessing EE for specific activities of shorter duration.

Keywords: Accelerometer; Activity monitor; Energy expenditure; Free-living; Physical activity.

Publication types

Clinical Trial
Research Support, Non-U.S. Gov't
Validation Study

MeSH terms

Accelerometry / instrumentation*
Accelerometry / methods
Accelerometry / standards
Adult
Arm
Cystic Fibrosis / metabolism*
Cystic Fibrosis / physiopathology*
Energy Metabolism / physiology*
Female
Forced Expiratory Volume / physiology
Humans
Male
Monitoring, Ambulatory / instrumentation*
Monitoring, Ambulatory / methods
Monitoring, Ambulatory / standards
Motor Activity / physiology
Reproducibility of Results
Young Adult