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Use of EMG to Assess Clinical Hypertonia

This study has been completed.
Information provided by (Responsible Party):
Terence Sanger, University of Southern California Identifier:
First received: May 11, 2007
Last updated: May 21, 2014
Last verified: May 2014
A handheld surface electromyography device will be tested by clinicians on children with limb hypertonia, and inter-rater reliability will be assessed with and without the device.

Condition Intervention Phase
Cerebral Palsy Hypertonia Spasticity Dystonia Rigidity Device: portable surface electromyography Phase 1 Phase 2

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Initial Assessment of the Use of Surface Electromyography as a Tool for Clinical Evaluation of Hypertonia in Children

Resource links provided by NLM:

Further study details as provided by Terence Sanger, University of Southern California:

Estimated Enrollment: 14
Study Start Date: January 2007
Study Completion Date: March 2007
Detailed Description:


Qualitative surface EMG measurement during passive movement will increase the inter-rater reliability of clinicians for diagnosis of spasticity and dystonia in children with hypertonia.

Specific Aims:

  1. Develop a handheld surface EMG device with auditory output that can be used similarly to a stethoscope to listen non-invasively to the activity of muscles.
  2. Provide clinicians at 5 different institutions with a device to test for 2 months in their own clinics.
  3. Bring all 5 clinicians to Stanford University for a single-day exercise in which each clinician will examine 10 children with hypertonia. Each clinician will rate the children without using the device, and then again with the device. Intra-class correlations and kappa statistics will be used to assess whether the use of the device leads to improved inter-rater reliability.

Ages Eligible for Study:   6 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age 6-18
  • hypertonia in at least one limb due to spasticity

Exclusion Criteria:

  • any condition that would increase the risk of participation
  Contacts and Locations
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Please refer to this study by its identifier: NCT00472914

United States, California
Stanford University
Stanford, California, United States, 94305
Sponsors and Collaborators
University of Southern California
Principal Investigator: Terence D Sanger, Md, PhD Stanford University
  More Information

Responsible Party: Terence Sanger, Associate Professor, University of Southern California Identifier: NCT00472914     History of Changes
Other Study ID Numbers: EMG auditory
Study First Received: May 11, 2007
Last Updated: May 21, 2014

Keywords provided by Terence Sanger, University of Southern California:

Additional relevant MeSH terms:
Muscle Hypertonia
Cerebral Palsy
Brain Damage, Chronic
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Neuromuscular Manifestations processed this record on September 21, 2017