- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT02585193
Evaluation of a Commercial Program on Weight Loss and Health Outcomes
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
There is a body of evidence that has evaluated the effect of Weight Watchers, a commercially available weight loss program, on changes in body weight. The current investigation aims to add to this body of evidence by providing additional data on changes in body weight and enhance the current evidence-base in regards to evaluating other health-related outcomes.
There is no evidence that demonstrates whether or not the weight loss as a result of the Weight Watchers program elicits changes in health-related outcomes related to aerobic capacity, flexibility, functional fitness, sleep, and other psychological measures. Additionally, within a scientific research protocol, measures of adherence and satisfaction have not been evaluated. This study will evaluate these outcomes beyond weight changes achieved across the 24-week program.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Pennsylvania
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Pittsburgh, Pennsylvania, Estados Unidos, 15261
- Physical Activity and Weight Management Research Center / University of Pittsburgh
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Male or female over age 18. Set "soft quotas" on the number of male and female participants - The desire is to have a 90% female / 10% male split.
- With or without previous Weight Watchers experience. Set quota on the number of participants with previous Weight Watchers experience at 65%.
- Self reported height/weight resulting in a Body Mass Index (BMI) of 27 to 43 kg/m2 (will re-screen at facility).
- Self report that he/she feels the need to lose weight.
- Willing to discontinue any current over-the-counter (OTC) supplements not recommended/prescribed by physician, with the exception of multivitamins or other vitamin supplement.
- Willing to follow recommendations required by study protocol.
- Willing to include demographic information (e.g., ethnicity, income and education).
- Willing to participate in consumer surveys and focus groups as a part of the intervention.
- Use of a personal smartphone on a daily basis. For Android devices, must be version 4.4 (code: KitKat) or 5.0 (codename: Lollipop). For iPhones, must be iOS6 and above. Cannot accommodate Blackberry devices.
- The willingness and ability to navigate and use applications on their smartphone on a daily basis (minimum training will be provided).
- Reliable home WiFi access
Ability to commit to attending up to 27 study visits in approximately 26 weeks:
- Ability to commit (to best of their ability) to attending weekly meetings, 30-60 minutes in duration, at the same day and time each week for 24 consecutive weeks (daytime and evening options will be available).
- Ability to commit to up to 3 additional study visits at Weeks 0, 12, and 24, each approximately 90 minutes in duration, to complete assessments (height, weight, questionnaires, physical measures).
Exclusion Criteria:
- Participants that are currently following a commercial weight-loss program.
- Participants that have been involved in a related market research program within the last 6 months.
- Pregnant or nursing, or planning on becoming pregnant over the next 9 months.
- Recent weight loss of ≥ 5 kg in the previous 3 months.
- History of clinically diagnosed eating disorder.
- Orthopedic limitations preventing participation in regular physical activity.
- Untreated thyroid disease or > 1 change in dose or type of thyroid medication over previous 6 months.
Taking any prescription medication with known effects on appetite or weight.
*With the exception of subjects on a stable dose of SSRIs (Selective Serotonin Re-uptake Inhibitors) for 6 months.
- Taking oral steroids.
- Chronic/inflammatory gastrointestinal disorders (irritable bowel syndrome acceptable).
- Previous surgical procedure for weight loss.
- Major surgery within the previous 3 months.
- History of heart problems (e.g., angina, bypass surgery, MI, etc) within previous 3 months.
- Presence of implanted cardiac defibrillator or pacemaker.
- Uncontrolled hypertension self-reported BP > 160/100mmHg)
- Diuretic use for hypertension over 1.5mg per day
- Diagnosis of type 1 or type 2 diabetes
- History of presence of cancer (completely respected basal or squamous cell carcinoma acceptable if treatment completed more than 6 months prior to enrollment).
- Consuming more than 14 alcoholic drinks per week or not more than 3 drinks per day.
- Planning to relocate in the next 9 months
- Any orthopedic limitation preventing participation in regular physical activity.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Outro
- Alocação: N / D
- Modelo Intervencional: Atribuição de grupo único
- Mascaramento: Nenhum (rótulo aberto)
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
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Outro: Weight Watchers Intervention
All participants are enrolled in this single arm of the study.
All participants receive the Weight Watchers intervention which consists of weekly group intervention/support meetings in which weight loss behaviors (diet, physical activity) are discussed.
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All participants are enrolled in this single arm of the study.
All participants receive the Weight Watchers intervention which consists of weekly group intervention/support meetings in which weight loss behaviors (diet, physical activity) are discussed.
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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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Body Weight Change
Prazo: 6 months
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To examine the effect of a 24-week commercially available weight loss program on weight change.
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6 months
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
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Change in Sleep Quality and Duration
Prazo: 6 months
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Sleep quality and duration.
Participants will be asked to complete the Pittsburgh Sleep Quality Index (PSQI) at baseline, Months 3 and 6.
The PSQI is a validated self-report measure of sleep duration and sleep quality.
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6 months
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Change in Happiness
Prazo: 6 months
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Participants will be asked to complete the Oxford Happiness Questionnaire at baseline, Months 3 and 6.
The OHQ is a validated self-report measure for broad personal happiness.
Respondents rate 29 sentences on a 6 point Likert scale (1, strongly disagree; 6, strong agree).
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6 months
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Change in Food Cravings
Prazo: 6 months
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The Food Craving Inventory-II (FCI-II) is a validated self-report measure for general cravings and cravings for specific types of foods and will be completed at baseline, Months 3 and 6.
Respondents rate the frequency of cravings since the last time they completed the survey for each of 33 food items using a five-point Likert scale (1, never; 2, rarely; 3, sometimes; 4, often; 5, always/almost every day).
The FCI-II consists of 5 scales (sweets, high fats, carbohydrates/starches, fast food fats, and fruits & vegetables) that constitute the higher order construct of food cravings (the total score).
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6 months
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Program Satisfaction
Prazo: 6 months
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Program Satisfaction. Two parts to evaluate:
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6 months
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Program Adherence
Prazo: 6 months
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Data on adherence (attendance at meetings and use of the points system) will also be collected.
Attendance data will be recorded by Weight Watchers staff at every meeting.
These data will be confirmed by a member of the research staff that will be attending the weekly Weight Watchers meetings.
In addition, the weekly weights obtained at the intervention sessions will be provided to the investigators by the intervention staff to allow for examination of the trajectory of weight loss.
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6 months
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Change in Aerobic Capacity, Functional Fitness, Balance, Flexibility
Prazo: 6 months
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Aerobic Capacity: Participants will complete a 6 minute walk test on a designated walking course. The 6 minute walk test is a measure of functional and aerobic capacity. Participants will asked to walk at a brisk, yet comfortable pace for a total of 6 minutes. Functional Fitness and Balance: The Short Physical Performance Battery (SPPB) is a group of measures that combines the results of the gait speed, chair stand and balance tests to measure functional fitness. Flexibility: Lower body flexibility will be assessed through the sit and reach test. The sit and reach is a common test to measure lower back and lower body flexibility. This will be collected 3 times with the best of 3 scores utilized. |
6 months
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Renee J Rogers, PhD, University of Pittsburgh
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
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 (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- PRO15040047
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .
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