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Citation |
Fortune E, Cloud-Biebl BA, Madansingh SI, Ngufor CG, Van Straaten MG, Goodwin BM, Murphree DH, Zhao KD, Morrow MM. J. Electromyogr. Kinesiol. 2019; ePub(ePub): ePub. |
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Affiliation |
Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery Mayo Clinic, Rochester, MN 55905, USA; Division of Health Care Policy and Research, Department of Health Sciences Research Mayo Clinic, Rochester, MN 55905, USA. Electronic address: morrow.melissa@mayo.edu. |
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Copyright |
(Copyright © 2019, Elsevier Publishing) |
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DOI |
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PMID |
31353200 |
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Abstract |
Shoulder pain is common in manual wheelchair (MWC) users. Overuse is thought to be a major cause, but little is known about exposure to activities of daily living (ADLs). The study goal was to develop a method to estimate three conditions in the field: (1) non-propulsion activity, (2) MWC propulsion, and (3) static time using an inertial measurement unit (IMU). Upper arm IMU data were collected as ten MWC users performed lab-based MWC-related ADLs. A neural network model was developed to classify data as non-propulsion activity, propulsion, or static, and validated for the lab-based data collection by video comparison. Six of the participants' free-living IMU data were collected and the lab-based model was applied to estimate daily non-propulsion activity, propulsion, and static time. The neural network model yielded lab-based validity measures ≥0.87 for differentiating non-propulsion activity, propulsion, and static time. A quasi-validation of one participant's field-based data yielded validity measures ≥0.66 for identifying propulsion. Participants' estimated mean daily non-propulsion activity, propulsion, and static time ranged from 158 to 409, 13 to 25, and 367 to 609 min, respectively. The preliminary results suggest the model may be able to accurately identify MWC users' field-based activities. The inclusion of field-based IMU data in the model could further improve field-based classification. Language: en |
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Keywords |
Activity classification; Body-worn sensors; Inertial measurement units; Shoulder overuse; Spinal cord injury; Wheelchair propulsion |