Limb Cooling in Essential Tremor

NCT ID: NCT02067702

Last Updated: 2019-01-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

27 participants

Study Classification

OBSERVATIONAL

Study Start Date

2014-10-31

Study Completion Date

2019-01-14

Brief Summary

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Essential Tremor (ET) is characterized by tremors affecting the arms. The investigators will examine the effects of non-pharmacological limb cooling on clinical and physiological characteristics in patients presenting with ET at three different temperatures; and will measure changes in tremor amplitude after cooling of the upper limb.

Detailed Description

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Once the subject has agreed to participate in the study the following assessments will be performed.

Three non-pharmacological assessments will be performed at different temperature to the upper limbs. The first will be a baseline assessment with upper limbs maintaining a normal body temperature (96-98°F). The second assessment will be performed with upper limbs at a temperature of 59°F and the third will be performed at a temperature of 80°F for a period of 10 minutes. At the end of 10 minutes, tremor measurements will be 15, 40, and 60 minutes.

1. Assessments will include the Tremor Rating Scale (TRS), Handwriting Assessment Battery (HAB) and the Functional Dexterity Test (FDT).
2. The Bagnoli and Trigno EMG systems will record surface EMG signals from muscles and accelerometer readings.

Conditions

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Essential Tremor

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Limb Cooling Assessment of ET Control

Healthy, volunteers with no known dermatological lesions, sensitivity to cold, or peripheral vascular disease.

Limb Cooling Assessment of ET

Intervention Type PROCEDURE

The non-pharmacological treatment assessments of limb cooling will take place for the subjects which will include the upper limbs. Both clinical and physiological recordings will be measured for a difference in tremors at three different temperatures. 1)baseline assessment maintaining a normal body temperature (96-98°F). 2) at a temperature of 59°F and 3) at a temperature of 80°F for a period of 10 minutes. The clinical assessments will include the Tremor Rating Scale (TRS), Handwriting Assessment Battery (HAB) and the Functional Dexterity Test (FDT). In addition, the Bagnoli and Trigno EMG systems to record surface EMG signals from muscles and accelerometer readings.

Limb Cooling Assessment of ET Experimental

Patients with known essential tremor for at least a year, and +2 or worse action or kinetic tremor of one or both upper limbs involving at least the forearm and/or hand.

Limb Cooling Assessment of ET

Intervention Type PROCEDURE

The non-pharmacological treatment assessments of limb cooling will take place for the subjects which will include the upper limbs. Both clinical and physiological recordings will be measured for a difference in tremors at three different temperatures. 1)baseline assessment maintaining a normal body temperature (96-98°F). 2) at a temperature of 59°F and 3) at a temperature of 80°F for a period of 10 minutes. The clinical assessments will include the Tremor Rating Scale (TRS), Handwriting Assessment Battery (HAB) and the Functional Dexterity Test (FDT). In addition, the Bagnoli and Trigno EMG systems to record surface EMG signals from muscles and accelerometer readings.

Interventions

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Limb Cooling Assessment of ET

The non-pharmacological treatment assessments of limb cooling will take place for the subjects which will include the upper limbs. Both clinical and physiological recordings will be measured for a difference in tremors at three different temperatures. 1)baseline assessment maintaining a normal body temperature (96-98°F). 2) at a temperature of 59°F and 3) at a temperature of 80°F for a period of 10 minutes. The clinical assessments will include the Tremor Rating Scale (TRS), Handwriting Assessment Battery (HAB) and the Functional Dexterity Test (FDT). In addition, the Bagnoli and Trigno EMG systems to record surface EMG signals from muscles and accelerometer readings.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Age range 18 to 95 years,
* Clinical diagnosis of essential tremor for at least a year,
* A +2 or worse action or kinetic tremor of one or both upper limbs involving at least the forearm and/or hand

Exclusion Criteria

* Dermatologic lesions in upper limbs (e.g. skin cancer, eczema, fresh or healing wounds, abrasions, acne, pustules, abscesses, or skin rash),
* Sensory loss in the upper limbs,
* Known history of sensitivity to cold (i.e., cold urticaria),
* Known peripheral vascular disease,
* Raynaud's phenomenon,
* Scleroderma

Healthy normal controls will be enrolled through advertisements. All controls will be examined to ensure that they are neurologically healthy.
Minimum Eligible Age

18 Years

Maximum Eligible Age

95 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Florida

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Aparna W Shukla, M.D

Role: PRINCIPAL_INVESTIGATOR

University of Florida

Locations

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University of Florida, Movement Disorders Center

Gainesville, Florida, United States

Site Status

Countries

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United States

Related Links

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Other Identifiers

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IRB201300662

Identifier Type: -

Identifier Source: org_study_id

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