A Multimodal Outcome Study of Eating Disorders
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.
研究概览
地位
详细说明
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.
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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London、英国、SE5 8AF
- Eating Disorders Unit, Institute of Psychiatry, Psychology, and Neuroscience
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
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.
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的：Food specific inhibitory control training
The stimuli in this task will involve pictures of food.
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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.
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.
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有源比较器：General inhibitory control training
The stimuli in this task will not involve pictures of food, but pictures of stationary and household items.
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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.
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.
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无干预：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.
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Change in eating disorder symptomatology
大体时间：This will be assessed at baseline, intervention completion, and follow-up (1 month later)
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Decrease in binge eating frequency and decrease in compensatory behaviours.
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This will be assessed at baseline, intervention completion, and follow-up (1 month later)
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Change in weight/BMI
大体时间：This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
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Weight will be measured by the researcher and BMI will be calculated.
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This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
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Change in inhibitory control
大体时间：This will be assessed at baseline (Time 0) and intervention completion (4 weeks).
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This will be assessed using the self-report measure of disinhibition and using the go/no-go computerized task.
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This will be assessed at baseline (Time 0) and intervention completion (4 weeks).
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Change in anxiety and depression symptoms
大体时间：This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
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This will be assessed using the GAD and PHQ measures.
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This will be assessed at baseline (Time 0), intervention completion (4 weeks), and follow-up (8 weeks)
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Changes in High Calorie Food Valuation
大体时间：This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
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This will be assessed using the food rating task.
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This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
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Changes in Low Calorie Food Valuation
大体时间：This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
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This will be assessed using the food rating task.
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This will be assessed at baseline (Time 0) and post-intervention (4 weeks).
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合作者和调查者
调查人员
- 首席研究员：Rayane Chami, MSc/ PhD Student、King's College London
- 研究主任：Dr Valentina Cardi, PhD、King's College London
- 研究主任：Professor Janet Treasure、King's College London
- 研究主任：Dr Grainne McLoughlin、King's College London
出版物和有用的链接
一般刊物
- Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13. doi: 10.1046/j.1525-1497.2001.016009606.x.
- Lowe MR, Friedman MI, Mattes R, Kopyt D, Gayda C. Comparison of verbal and pictorial measures of hunger during fasting in normal weight and obese subjects. Obes Res. 2000 Nov;8(8):566-74. doi: 10.1038/oby.2000.73.
- Hunot C, Fildes A, Croker H, Llewellyn CH, Wardle J, Beeken RJ. Appetitive traits and relationships with BMI in adults: Development of the Adult Eating Behaviour Questionnaire. Appetite. 2016 Oct 1;105:356-63. doi: 10.1016/j.appet.2016.05.024. Epub 2016 May 20.
- Whiteside, S. P., & Lynam, D. R. (2001). The Five Factor Model and impulsivity: Using a structural model of personality to understand impulsivity. Personality and Individual Differences, 30(4), 669-689. http://dx.doi.org/10.1016/S0191-8869(00)00064-7.
- Fairburn, C. G. (2008). Cognitive behavior therapy and eating disorders. Guilford Press
- Kliemann N, Beeken RJ, Wardle J, Johnson F. Development and validation of the Self-Regulation of Eating Behaviour Questionnaire for adults. Int J Behav Nutr Phys Act. 2016 Aug 2;13:87. doi: 10.1186/s12966-016-0414-6.
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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