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- Ensaio Clínico NCT01913743
The Effects of Mindsets on the Brain's Response to Food Cues (MINDSETS)
Previous studies have shown that obese individuals exhibit greater reward-related brain activity in response to food cues than lean individuals and our group has shown that successful weight loss maintainers who were previously obese and now maintain a healthy weight have increased control-related activity when viewing food cues. These findings suggest key roles for both reward-related brain areas and inhibitory control regions in eating behavior. However, no studies to date have examined (a) whether the response to food cues (i.e., cue-reactivity) can be changed in obese individuals, (b) which strategies are most effective at altering brain response to food cues, or (c) the neural mechanisms that support such change.
Given the omnipresent environmental cues to eat and the association between heightened reward-responsivity and obesity, it is critical to investigate ways to potentially alter food cue-reactivity in the obese. The most widely employed approach for behavioral weight loss treatment is Cognitive Behavioral Therapy (CBT), which incorporates strategies to control and change cognitions (e.g., avoid desire to eat tempting foods by focusing on something else). This approach is sometimes described as "change- focused" because modifying negative thoughts is assumed to thereby change associated maladaptive emotions and behaviors. Alternatively, emerging evidence suggests Acceptance and Commitment Therapy (ACT), which teaches participants to recognize and accept their cravings as feelings that need not be acted upon, may also be effective in treating obesity. A third strategy often employed in smoking cessation and substance abuse treatment is to focus on the long-term consequences of behaviors, however this form of treatment is not typically used in behavioral weight loss therapy. Thus although each approach is potentially effective, these treatment approaches differ greatly in the cognitive strategies they employ.
The primary aim of the proposed research is to compare a cognitive strategy used in CBT ('CHANGE'), a cognitive strategy emphasized in ACT ('ACCEPT'), and a cognitive strategy used in smoking cessation ('LATER') relative to a control condition ('NOW'), in their effectiveness in altering reward and inhibitory control responses to food cues among obese individuals.
Visão geral do estudo
Status
Condições
Tipo de estudo
Inscrição (Antecipado)
Contactos e Locais
Locais de estudo
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Rhode Island
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Providence, Rhode Island, Estados Unidos, 02903
- Recrutamento
- Weight Control & Diabetes Research Center
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Contato:
- Kathryn E Demos, PhD
- Número de telefone: 401-793-8939
- E-mail: kathryn_demos@brown.edu
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Investigador principal:
- Kathryn E Demos, PhD
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
Inclusion Criteria:
- MRI compatibility
- 25-55 yrs old
- 25-40 BMI
- weight stable
- right handed
Exclusion Criteria:
- MRI incompatibility
- left handed
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
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MINDSETS
overweight/obese
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
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Blood oxygen level dependent (BOLD) signal differences between 4 different mindset conditions in response to food cues
Prazo: 1 day (single time point)
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brain response to food cues measured via functional magnetic resonance imaging (fMRI) BOLD signal change will be assessed across all participants while using the 4 different mindsets potential differences in the BOLD response to food cues will be assessed between the 4 mindsets
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1 day (single time point)
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
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behavioral measures of physical activity and eating behavior assessed via questionnaires
Prazo: 1 day (single time point)
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behavioral measures of physical activity and eating behavior will be assessed via questionnaires in order to describe the sample
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1 day (single time point)
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Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Kathryn E Demos, PhD, Brown University Medical School
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Antecipado)
Conclusão do estudo (Antecipado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- MINDSETS - TOS
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