TY  - JOUR
AU  - Gluck, S
AU  - Summers, MJ
AU  - Finnis, ME
AU  - Andrawos, A
AU  - Goddard, TP
AU  - Hodgson, CL
AU  - Iwashyna, TJ
AU  - Deane, AM
Y2  - 2020/12/22
Y1  - 2020/03/01
SN  - 1036-7314
UR  - http://hdl.handle.net/11343/257760
AB  - 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.
LA  - English
PB  - ELSEVIER SCIENCE INC
T1  - An observational study investigating the use of patient-owned technology to quantify physical activity in survivors of critical illness
DO  - 10.1016/j.aucc.2019.01.009
IS  - Australian Critical Care
VL  - 33
IS  - 2
SP  - 137-143
L1  - /bitstream/handle/11343/257760/Gluck%20Australian%20Critical%20Care%202020%20Smartphone%20ownership.pdf?sequence=2&isAllowed=n
ER  -