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Evaluating the Psychometrics of Accelerometer Data for Independent Monitoring of Task Repetitive Practice.
Elena V Donoso Brown1, Rachael Miller Neilan2, Fiona Kessler Brody1
1Department of Occupational Therapy, Duquesne University, 600 Forbes Ave, Pittsburgh, PA 15219, USA.
Sensors (Basel, Switzerland)
|November 13, 2025
Summary
Wrist-worn activity monitors show potential for tracking upper extremity exercises post-stroke. Accelerometer data reliably measures movement duration and intensity, aiding home rehabilitation program monitoring.
Area of Science:
- Rehabilitation Engineering
- Biomedical Instrumentation
- Movement Science
Background:
- Post-stroke upper extremity impairments hinder daily activities.
- Effective task-repetitive practice is crucial for recovery.
- Monitoring home-based exercise adherence and quality is challenging.
Purpose of the Study:
- To evaluate the reliability and validity of accelerometer data from a wrist-worn device.
- To assess upper extremity movement during task repetitive practice in healthy adults.
- To explore potential for monitoring home exercise programs for stroke survivors.
Main Methods:
- 25 healthy adults wore wrist-worn activity monitors.
- Participants performed four functional tasks under varied repetition conditions.
- Measures included duration, angular velocity, and acceleration.
Main Results:
- Accelerometer data demonstrated moderate to excellent within-session reliability for movement measures.
- Duration accurately distinguished between different repetition counts (5, 10, 20).
- Measures differentiated between comfortable and fast repetitions in most tasks.
Conclusions:
- Raw accelerometer data shows promise for assessing upper extremity movement quality and adherence.
- Findings support the potential use of activity monitors in home-based stroke rehabilitation.
- Further research is needed to confirm reliability in individuals with motor impairments.
