Accelerometer output and its association with energy expenditure during manual wheelchair propulsion

Spinal Cord
Y C LearmonthRobert W Motl

Abstract

This is an experimental design. This study examined the association between rates of energy expenditure (that is, oxygen consumption (VO2)) and accelerometer counts (that is, vector magnitude (VM)) across a range of speeds during manual wheelchair propulsion on a motor-driven treadmill. Such an association allows for the generation of cutoff points for quantifying the time spent in moderate-to-vigorous physical activity (MVPA) during manual wheelchair propulsion. The study was conducted in the University Laboratory. Twenty-four manual wheelchair users completed a 6-min period of seated rest and three 6-min periods of manual wheelchair propulsion on a motor-driven wheelchair treadmill. The 6-min periods of wheelchair propulsion corresponded with three treadmill speeds (1.5, 3.0 and 4.5 mph) that elicited a range of physical activity intensities. Participants wore a portable metabolic unit and accelerometers on both wrists. Primary outcome measures included steady-state VO2 and VM, and the strength of association between VO2 and VM was based on the multiple correlation and squared multiple correlation coefficients from linear regression analyses. Strong linear associations were established between VO2 and VM for the left (R=0.93±...Continue Reading

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Citations

Sep 29, 2017·Expert Review of Medical Devices·Jeffer Eidi SasakiRobert W Motl
Dec 24, 2018·JMIR Rehabilitation and Assistive Technologies·Giulia BarbareschiStephen Sprigle
Jun 5, 2015·Frontiers in Bioengineering and Biotechnology·Jennifer L DysterheftLaura A Rice
Nov 16, 2016·Assistive Technology : the Official Journal of RESNA·François RouthierCanWheel Research Team
Dec 21, 2016·Journal of Rehabilitation Research and Development·KaLai TsangDan Ding
Jun 14, 2019·Journal of Rehabilitation and Assistive Technologies Engineering·Pin-Wei B Chen, Kerri Morgan
Oct 14, 2020·American Journal of Physical Medicine & Rehabilitation·Ian M RiceRobert W Motl

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