Publication: The validity and accuracy of wrist-worn activity monitors in lower-limb prosthesis users
Issued Date
2019-01-01
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ISSN
14645165
09638288
09638288
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2-s2.0-85064545174
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Mahidol University
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SCOPUS
Bibliographic Citation
Disability and Rehabilitation. (2019)
Suggested Citation
John D. Smith, Gary Guerra, Brian G. Burkholder The validity and accuracy of wrist-worn activity monitors in lower-limb prosthesis users. Disability and Rehabilitation. (2019). doi:10.1080/09638288.2019.1587792 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/52267
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Title
The validity and accuracy of wrist-worn activity monitors in lower-limb prosthesis users
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Abstract
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Purpose: To investigate the accuracy of consumer-grade wrist-worn activity monitors during over ground walking in persons using lower-limb prosthetics. Method: Thirty-two participants using lower-limb prosthetics (age = 49.7 ± 14.0 yrs, height = 176.1 ± 11.6 cm, weight = 87.8 ± 21.1 kg) were fitted with a Polar Loop, Fitbit Flex, MOVEBAND, Garmin Vivofit, and a Fitbit Charge on the right and left wrists as well as an Omron HJ-113 pedometer on the right and left hip, then walked 140 m at a self-selected pace on an indoor flat surface. Results: There were no significant differences between any of the respective right and left monitors, p > 0.05. When comparing step counts with actual step counts, Polar Loop (p = 0.001), Fitbit Flex (p = 0.001), and MOVEBAND (p = 0.001) were significantly lower than actual step counts. No significant differences existed between the remaining monitors and actual step counts (p > 0.05). Omron incurred the least error (0.6%), followed by Garmin Vivofit (1.3%) and Fitbit Charge (3.6%), with greatest error in the MOVEBAND (21.4%) and Polar Loop (13.1%). Bland–Altman plots suggest Garmin Vivofit to have the least error along with tightest agreement among the wrist-worn activity monitors Conclusion: When considering the use of consumer-grade wrist-worn activity monitors for assessing step counts in persons using lower-limb prostheses, the Garmin Vivofit seems to be the best option followed by Fitbit Charge.Implications for rehabilitation This study shows that despite potential of altered gait, some consumer-grade activity monitors can track over ground walking quite well. Clinicians and researchers can use these devices to track activity and prosthetic compliance in their patients.