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Related Experiment Video

Updated: May 10, 2026

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
08:40

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity

Published on: June 12, 2019

Elbow spasticity during passive stretch-reflex: clinical evaluation using a wearable sensor system.

Chris A McGibbon1, Andrew Sexton, Melony Jones

  • 1Institute of Biomedical Engineering, University of New Brunswick, 25 Dineen Dr., Fredericton, NB, Canada. cmcgibb@unb.ca

Journal of Neuroengineering and Rehabilitation
|June 21, 2013
PubMed
Summary

A new wearable sensor system objectively quantifies elbow spasticity during stretch-reflex tests. This system, using an angle sensor and electromyography (EMG), offers a more sensitive and reliable clinical assessment than traditional subjective scales.

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Medicine
  • Clinical Measurement

Background:

  • Spasticity significantly impacts function and treatment costs in upper motor neuron syndrome.
  • Current clinical assessments, like the Modified Ashworth Scale (MAS), are subjective and lack sensitivity.
  • Objective quantification of spasticity is needed for improved clinical management.

Purpose of the Study:

  • To evaluate a wearable sensor system for objective spasticity quantification.
  • To assess the system's ability to capture clinically relevant features during stretch-reflex tests.
  • To compare sensor-derived metrics with established clinical measures.

Main Methods:

  • A wearable system with a fiber-optic goniometer and 2-channel EMG was used.

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Last Updated: May 10, 2026

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
08:40

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity

Published on: June 12, 2019

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
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Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI

Published on: April 18, 2011

A Standardized Method for Measurement of Elbow Kinesthesia
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A Standardized Method for Measurement of Elbow Kinesthesia

Published on: October 10, 2020

  • Data was collected during passive stretch-reflex tests for elbow spasticity.
  • A kinematic model extracted reflex intensity metrics from sensor data.

    • Main Results:

    • Kinematic and EMG metrics showed strong correlation with each other.
    • Sensor-derived metrics positively correlated with the Modified Ashworth Scale (MAS).
    • Metrics showed negative correlation with isometric muscle strength.

    Conclusions:

    • A wearable sensor system and kinematic model can objectively quantify elbow spasticity.
    • This system provides clinically relevant data during stretch-reflex testing.
    • The approach offers a more objective alternative to subjective clinical scales.