Use of EMG to Assess Clinical Hypertonia

This study has been completed.
Information provided by:
Stanford University Identifier:
First received: May 11, 2007
Last updated: NA
Last verified: April 2007
History: No changes posted

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
Device: portable surface electromyography
Phase 1
Phase 2

Study Type: Observational
Study Design: Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Cross-Sectional
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 Stanford University:

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
Genders Eligible for Study:   Both
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
Please refer to this study by its identifier: NCT00472914

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

No publications provided Identifier: NCT00472914     History of Changes
Other Study ID Numbers: EMG auditory
Study First Received: May 11, 2007
Last Updated: May 11, 2007
Health Authority: United States: Institutional Review Board

Keywords provided by Stanford University:

Additional relevant MeSH terms:
Cerebral Palsy
Dystonic Disorders
Muscle Hypertonia
Muscle Rigidity
Muscle Spasticity
Brain Damage, Chronic
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Movement Disorders
Neuromuscular Manifestations
Muscular Diseases
Musculoskeletal Diseases processed this record on April 15, 2014