Journal article
Accelerometer-measured physical activity and functional behaviours among people on dialysis
- Abstract:
- Background The feasibility of wrist-worn accelerometers, and the patterns and determinants of physical activity, among people on dialysis are uncertain. Methods People on maintenance dialysis were fitted with a wrist-worn AxivityAX3 accelerometer. Subsets also wore a 14-day electrocardiograph patch (Zio®PatchXT) and wearable cameras. Age-, sex- and season-matched UK Biobank control groups were derived for comparison. Results Median (interquartile range) accelerometer wear time for the 101 recruits was 12.5 (10.4–13.5) days, of which 73 participants (mean age 66.5 years) had excellent wear on both dialysis and non-dialysis days. Mean (standard error) overall physical activity levels were 15.5 (0.7) milligravity units (mg), 14.8 (0.7) mg on dialysis days versus 16.2 (0.8) mg on non-dialysis days. This compared with 28.1 (0.5) mg for apparently healthy controls, 23.4 (0.4) mg for controls with prior cardiovascular disease (CVD) and/or diabetes mellitus and 22.9 (0.6) mg for heart failure controls. Each day, we estimated that those on dialysis spent an average of about 1 hour (h/day) walking, 0.6 h/day engaging in moderate-intensity activity, 0.7 h/day on light tasks, 13.2 h/day sedentary and 8.6 h/day asleep. Older age and self-reported leg weakness were associated with decreased levels of physical activity, but the presence of prior CVD, arrhythmias and listing for transplantation were not. Conclusions Wrist-worn accelerometers are an acceptable and reliable method to measure physical activity in people on dialysis and may also be used to estimate functional behaviours. Among people on dialysis, who are broadly half as active as general population controls, age and leg weakness appear to be more important determinants of low activity levels than CVD.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 630.6KB, Terms of use)
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- Publisher copy:
- 10.1093/ckj/sfaa045
Authors
- Publisher:
- Oxford University Press
- Journal:
- Clinical Kidney Journal More from this journal
- Volume:
- 14
- Issue:
- 3
- Pages:
- 950-958
- Publication date:
- 2020-08-31
- Acceptance date:
- 2020-02-10
- DOI:
- EISSN:
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2048-8513
- ISSN:
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2048-8505
- Language:
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English
- Pubs id:
-
1087106
- Local pid:
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pubs:1087106
- Deposit date:
-
2020-02-12
Terms of use
- Copyright holder:
- Nawab et al.
- Copyright date:
- 2020
- Rights statement:
- © The Author(s) 2020. Published by Oxford University Press on behalf of ERA-EDTA. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
- Licence:
- CC Attribution (CC BY)
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