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Type: Journal article
Title: An observational study investigating the use of patient-owned technology to quantify physical activity in survivors of critical illness
Author: Gluck, S.
Summers, M.J.
Finnis, M.E.
Andrawos, A.
Goddard, T.P.
Hodgson, C.L.
Iwashyna, T.J.
Deane, A.M.
Citation: Australian Critical Care, 2019; 33(2):137-143
Publisher: Australian College of Critical Care Nurses
Issue Date: 2019
ISSN: 1036-7314
Statement of
Samuel Gluck, Matthew James Summers, Mark Edward Finnis, Alice Andrawos, Thomas Paul Goddard, Carol Lynette Hodgson, Theodore John Iwashyna, Adam Michael Deane
Abstract: BACKGROUND:Physical activity after intensive care unit (ICU) discharge is challenging to measure but could inform research and practice. A patient's smartphone may provide a novel method to quantify physical activity. OBJECTIVES:We aimed to evaluate the feasibility and accuracy of using smartphone step counts among survivors of critical illness. METHODS:We performed a prospective observational cohort study in 50 patients who had an ICU length of stay>48 h, owned a smartphone, were ambulatory before admission, and were likely to attend follow-up at 3 and 6 months after discharge. At follow-up, daily step counts were extracted from participants' smartphones and two FitBit pedometers, and exercise capacity (6-min walk test) and quality of life (European Quality of Life-5 Dimensions) were measured. RESULTS:Thirty-nine (78%) patients returned at 3 months and 33 (66%) at 6 months, the median [interquartile range] smartphone step counts being 3372 [1688-5899] and 2716 [1717-5994], respectively. There was a strong linear relationship, with smartphone approximating 0.71 (0.58, 0.84) of FitBit step counts, P < 0.0001, R-squared = 0.87. There were weak relationships between step counts and the 6-min walk test distance. CONCLUSION:Although smartphone ownership and data acquisition limit the viability of using extracted smartphone steps at this time, mean daily step counts recorded using a smartphone may act as a surrogate for a dedicated pedometer; however, the relationship between step counts and other measures of physical recovery remains unclear.
Keywords: Accelerometer
Patient outcome assessment
Step count
Rights: © 2019 Australian College of Critical Care Nurses Ltd. Published by Elsevier Ltd. All rights reserved
DOI: 10.1016/j.aucc.2019.01.009
Appears in Collections:Aurora harvest 4
Nursing publications

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