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A Multimodal Outcome Study of Eating Disorders

22 oktober 2019 bijgewerkt door: King's College London

Targeting Top-down and Bottom-up Processing in Eating Disorders Using Computerized Training Approaches: A Multimodal Outcome Study

This research project aims to explore the effectiveness of combined go/no-go training and implementation intentions in targeting binge eating frequency among people with binge eating disorder and bulimia nervosa.

The full intervention is 4 weeks long and consists of completing the training and food diaries every day and meeting with the researcher twice for EEG recording. Moreover, it involves completing questionnaires at baseline, at intervention completion, and one month after the intervention.

Moreover, healthy control participants will be recruitment to complete baseline questionnaires and take part in one EEG recording session in order to assess baseline differences in brain activation in response to computer tasks.

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Participants will learn about the study through flyers, e-mail, and social media (i.e. twitter and Facebook) which will describe the interventional nature of the study, the main eligibility criteria, and the researcher's contact information. Interested individuals will be asked to contact the researchers, who will then send an information sheet detailing the study procedure and what participation would involve. After reading the information sheet, interested individuals will be contacted by the researchers in order to confirm all eligibility criteria including diagnostic assessment. If these are met a PDF of the consent form will be sent to the participants, including information about their rights as participants and their ability to withdraw at any time without having to give a reason. Participants who sign the consent form will respond to the email with the attached document. Next, researchers will contact the participant to set an appointment to enter the lab for the first EEG recording. Before entering the lab, participants will be asked to complete a food diary and complete the complete a battery of questionnaires. The questionnaires include: 1) a demographic questionnaire, 2) eating disorders examination questionnaire, 3) food ratings test, 4) self-regulation of eating behaviour questionnaire for adults, 5) The negative urgency scale, 6) the adults eating behaviour questionnaire, 7) GAD-7, and 8) PHQ-9.

Upon participants' arrival to the lab, participants will be asked to complete the food rating task. Next, they will learn to complete the training tasks (i.e. food specific go/no-go and general go/no-go) and perform them during EEG recording. They will be offered the opportunity to ask questions relating to the task or the EEG at any time. Their weight will also be measured.

Participants will be asked to complete the training and complete food diaries every day for four weeks. The successful/ unsuccessful attempts at implementation intentions will be assessed weekly by a mentor. A researcher/clinician will discuss setting the implementation intention goals with the participant over email. At the end of the training, participants will enter the lab to re-complete the four tasks while researchers record brain activation using the EEG. They will also be asked to complete the food rating task again and their weight will be re-assessed. Before leaving, they will be asked to complete a feedback sheet in which they can express their experience with the training, in terms of facilitators and barriers and visual analogue scales that will ask participants to rate the acceptability, usefulness and level of burden experienced with training.

Participants will then be followed up at 1 month post-intervention; they will be asked to complete the battery of questionnaires used at baseline and post-intervention.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

120

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigd Koninkrijk
      • London, Verenigd Koninkrijk, SE5 8AF
        • Eating Disorders Unit, Institute of Psychiatry, Psychology, and Neuroscience

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 60 jaar (Volwassen)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

1) Diagnosis of an Eating Disorder (Bulimia Nervosa or Binge Eating Disorder); 2) No severe psychiatric comorbidity (e.g. psychosis); 3) Fluency in English; 4) No visual impairment; 5) No cognitive/neurological impairment; 6) No drugs or alcohol abuse; 7) No use of weight-loss medication; 8 No metabolic disorder; 9) Above 18 years old and below 60 years old.

Exclusion Criteria:

1) No diagnosis of an eating disorder; 2) Severe psychiatric comorbidity; 3) No English language fluency; 4) Visual impairment (not correctable with eye-wear); 5) Cognitive/neurological impairment; 6) Drug or alcohol abuse; 7) Use of weight-loss medication; 8) A metabolic disorder; 9) Below 18 years old and above 60 years old.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Food specific inhibitory control training
The stimuli in this task will involve pictures of food.
Gedragsmatig: Food specific Inhibitory control training
It involves a go/no-go task in which participants are requested to respond by clicking a particular button when a specific stimulus appears and requested to withhold their response when another particular stimulus appears. Stimuli in this intervention include photos of food and non-food.
Gedragsmatig: Implementation intentions
It involves designing "if-then" strategies of behaviour. Participants will be asked to describe situations in which they feel they are more prone to behave in a way that is not congruent to their long term goals, and then to plan strategies to behave differently when faced with this situation in the future.
Actieve vergelijker: General inhibitory control training
The stimuli in this task will not involve pictures of food, but pictures of stationary and household items.
Gedragsmatig: Implementation intentions
It involves designing "if-then" strategies of behaviour. Participants will be asked to describe situations in which they feel they are more prone to behave in a way that is not congruent to their long term goals, and then to plan strategies to behave differently when faced with this situation in the future.
Gedragsmatig: General inhibitory control training
It involves a go/no-go task in which participants are requested to respond by clicking a particular button when a specific stimulus appears and requested to withhold their response when another particular stimulus appears. Stimuli in this intervention include only non-food pictures.
Geen tussenkomst: Baseline brain activation assessment (healthy controls)
This arm is included to assess brain activation using EEG among healthy controls at baseline in order to compare responses to participants with eating disorders.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in eating disorder symptomatology
Tijdsspanne: This will be assessed at baseline, intervention completion, and follow-up (1 month later)
Decrease in binge eating frequency and decrease in compensatory behaviours.
This will be assessed at baseline, intervention completion, and follow-up (1 month later)

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in weight/BMI
Tijdsspanne: This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
Weight will be measured by the researcher and BMI will be calculated.
This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
Change in inhibitory control
Tijdsspanne: This will be assessed at baseline (Time 0) and intervention completion (4 weeks).
This will be assessed using the self-report measure of disinhibition and using the go/no-go computerized task.
This will be assessed at baseline (Time 0) and intervention completion (4 weeks).
Change in anxiety and depression symptoms
Tijdsspanne: This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
This will be assessed using the GAD and PHQ measures.
This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
Changes in High Calorie Food Valuation
Tijdsspanne: This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
This will be assessed using the food rating task.
This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
Changes in Low Calorie Food Valuation
Tijdsspanne: This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
This will be assessed using the food rating task.
This will be assessed at baseline (Time 0) and post-intervention (4 weeks).

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

King's College London

Medewerkers

University of Exeter

Onderzoekers

  • Hoofdonderzoeker: Rayane Chami, MSc/ PhD Student, King's College London
  • Studie directeur: Dr Valentina Cardi, PhD, King's College London
  • Studie directeur: Professor Janet Treasure, King's College London
  • Studie directeur: Dr Grainne McLoughlin, King's College London

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

26 november 2017

Primaire voltooiing (Werkelijk)

1 juni 2019

Studie voltooiing (Werkelijk)

1 juni 2019

Studieregistratiedata

Eerst ingediend

3 april 2017

Eerst ingediend dat voldeed aan de QC-criteria

19 april 2017

Eerst geplaatst (Werkelijk)

24 april 2017

Updates van studierecords

Laatste update geplaatst (Werkelijk)

24 oktober 2019

Laatste update ingediend die voldeed aan QC-criteria

22 oktober 2019

Laatst geverifieerd

1 oktober 2019

Meer informatie

Termen gerelateerd aan deze studie

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • IRAS Project ID: 209609

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

Nee

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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