rTMS and Body Shape Perception

NCT ID: NCT01717079

Last Updated: 2018-05-30

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

TERMINATED

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-05-31

Study Completion Date

2017-12-15

Brief Summary

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Anorexia nervosa (AN) is a frequent, potentially life-threatening eating disorder characterized by a resistance to maintaining body weight at or above a minimally normal weight for age and height, an intense fear of weight gain or being "fat" even though underweight, a loss of menstrual periods in girls and women post-puberty and a disturbance in the experience of body weight or shape. Body weight and shape dissatisfaction is linked to the development, maintenance and relapse of AN. Neuroimaging studies have shown that the inferior parietal cortex is involved in body image perception and less activated in patients with AN compared with healthy subjects. Repetitive transcranial magnetic stimulation (rTMS) is used to modulate cortical excitability, and particularly to increase excitability with high-frequency rTMS. The aim of this study was to investigate the effect of "excitatory" high-frequency rTMS over the "hypoactive" inferior parietal cortex of 54 patients with AN.

This randomized, double-blind, placebo-controlled study will compare effective rTMS (2000 ten-Hz stimulations per session, applied at 90% of the resting motor threshold, with 10 sessions in two weeks) versus placebo rTMS.

Assessments will be performed before rTMS and after the last rTMS session (immediately after, at 15 days and three months). The principal criteria for judgement is a body image satisfaction scale (Boby Shape Questionnaire, BSQ-34). The secondary criteria for judgement are eating behaviour scales (Eating Attitude Test, EAT-40; Bulimia test, BULIT and Eating Disorders Inventory, EDI-2), the Hamilton depression rating scale and Hamilton anxiety rating scale, a quality of life scale (Short-Form Health Survey, SF-36), a body composition analysis using a Dual-energy X-ray absorptiometry and the alpha-MSH autoantibodies levels (biomarker for eating disorders recently described).

Inferior parietal cortex rTMS could not only improve body image perception, but also help in the treatment of eating disorders, allowing weight gain with a decreased anxiety and improving patients' quality of life. Also positive results could have direct therapeutic implications with the possibility to complete regular rTMS sessions, or to implant extradural electrodes for chronic parietal cortex stimulation.

Detailed Description

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Conditions

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Anorexia Nervosa

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Effective arm

Effective coil

Group Type ACTIVE_COMPARATOR

rTMS

Intervention Type PROCEDURE

120 pulses 0.2Hz

Placebo arm

Placebo coil

Group Type PLACEBO_COMPARATOR

Sham rTMS

Intervention Type PROCEDURE

120 pulses 0.2Hz

Interventions

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Sham rTMS

120 pulses 0.2Hz

Intervention Type PROCEDURE

rTMS

120 pulses 0.2Hz

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Female
* Age above 18
* Restrictive anorexia nervosa with a disease duration more than one year and less than three years.
* Body Mass Index below 16
* Patient receiving or having received optimal treatment for anorexia nervosa
* Right-handed
* Normal blood ionogramme
* Previous stable antidepressor treatment for one month and no expected modification in the three following months
* Patients arriving by car with someone else or by public transportation

Exclusion Criteria

* Pregnancy
* Contraindication to transcranial magnetic stimulation i.e. pace-maker, cardiac valve protheses, metallic protheses etc.
* History of epileptic seizure
* Cerebral lesion of any etiology (post-traumatic, tumoral, vascular etc.)
* History of previous rTMS
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Rouen

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Nathalie CHASTAN, MD

Role: PRINCIPAL_INVESTIGATOR

UH Rouen

Locations

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Rouen University Hospital

Rouen, , France

Site Status

Countries

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France

Other Identifiers

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2011/122/HP

Identifier Type: -

Identifier Source: org_study_id

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