Electrophysiological Study of the Effects of Limb Cooling on Essential Tremor

December 14, 2012 updated by: Mayo Clinic
To determine the effects of upper limb forearm cooling on Essential Tremor upper limb tremor using a more practical method of limb cooling through a forearm cold pack.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Arizona
      • Scottsdale, Arizona, United States, 85259
        • Mayo Clinic Arizona

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 95 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with clinical diagnosis of E.T. for at least a year by a movement disorder neurologist
  • A +2 or worse action or kinetic tremor of one or both upper limbs involving at least the forearm and/or hand
  • Ages 18 to 95 years old

Exclusion Criteria:

  • (+) sensory loss in the upper extremities
  • dermatologic lesions in upper extremities (e.g. skin cancer, eczema, fresh or healing wounds, abrasions, acne, pustules, abscesses, or skin rash)
  • known history of sensitivity to cold (i.e., cold urticaria)
  • known peripheral vascular disease
  • Raynaud's phenomenon
  • scleroderma

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: 15 - 30
The upper limb with tremor will be cooled with 15 degrees Celsius water for 10 minutes at Visit 1 and with 30 degrees Celsius water for 10 minutes at Visit 2.
The upper limb with tremor will be cooled with 15 degrees Celsius water for 10 minutes at Visit 1 and with 30 degrees Celsius water for 10 minutes at Visit 2.
Other: 30 - 15
The upper limb with tremor will be cooled with 30 degrees Celsius water for 10 minutes at Visit 1 and with 15 degrees Celsius water for 10 minutes at Visit 2.
The upper limb with tremor will be cooled with 30 degrees Celsius water for 10 minutes at Visit 1 and with 15 degrees Celsius water for 10 minutes at Visit 2.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tremor Amplitude
Time Frame: After 10 minutes of limb cooling treatment.
Average tremor amplitude during the Outstretched, Abducted, Nose, and Mug conditions of the Tremor Rating Scale test.
After 10 minutes of limb cooling treatment.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tremor Rating Scale
Time Frame: After 10 minutes of limb cooling treatment.
Arm tremor severity was rated on a scale from 0=None to 4=Severe during each of four conditions: arm outstretched, hand close to mouth and arm abducted, performing a finger to nose maneuver, and holding a mug. The Tremor Rating Scale score was the mean of the scores for the four conditions, and ranged from a score of 0=None to 4=Severe.
After 10 minutes of limb cooling treatment.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Principal Investigator: Virgilio Evidente, MD, Mayo Clinic

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2010

Primary Completion (Actual)

December 1, 2011

Study Completion (Actual)

December 1, 2011

Study Registration Dates

First Submitted

March 24, 2010

First Submitted That Met QC Criteria

March 24, 2010

First Posted (Estimate)

March 25, 2010

Study Record Updates

Last Update Posted (Estimate)

December 19, 2012

Last Update Submitted That Met QC Criteria

December 14, 2012

Last Verified

December 1, 2012

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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