Effectiveness of an Online Programme to Tackle Individual's Meat Intake Through SElf-regulation (OPTIMISE): A Randomised Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 151
- 试验地点
- 2
- 主要终点
- Change in mean daily meat consumption from baseline to follow-up 1, comparing intervention and control groups.
研究概览
简要总结
This randomised controlled trial will test the effectiveness of a self-regulation intervention for reducing meat consumption in people who are motivated to change their meat-eating habits.
详细描述
An individually randomised, two-arm, parallel-group design will be employed, assessing superiority of the self-regulation intervention over a control. The intervention aims to support individuals in self-monitoring their meat consumption, learning about the impact of their food choices on their health and the environment and setting personal meat reduction goals as well as implementing those goals to reduce meat consumption in manageable steps.
After a baseline week of self-monitoring meat consumption, the intervention will be delivered over four weeks, followed by a four-week long maintenance phase.The study will be delivered remotely through our bespoke website developed specifically for the intervention.
All participants will complete a baseline questionnaire that asks about their demographic characteristics, assesses their self-efficacy regarding consumption of meat-free dishes and asks about their meat-eating identity. Participants will be then randomised 1:1 to the control or intervention group. During the baseline week (week 1, days 2-5), participants will be invited to complete a meat frequency questionnaire, daily, each time looking back at the previous day. After the baseline week, participants will follow their assigned condition for eight weeks. In the control condition, participants will be asked to try and reduce their meat intake, without further guidance. In the intervention condition, participants will be guided through an experimentation process for the first four weeks. This includes setting a meat reduction goal, tracking meat intake daily, planning and implementing an action to reduce meat intake daily and evaluating those actions weekly. After these four weeks (weeks 2-5), intervention group participants will enter a four-week long maintenance phase during which they will be asked to continue with the actions they found useful in the previous weeks. During the fifth and ninth weeks, all participants will be invited to complete the meat frequency questionnaire daily. On the last day of both the fifth and ninth weeks, participants will be asked to complete the self-efficacy and meat-identity questionnaires used in the baseline session again. On the last day of the fifth-week participants of the intervention condition will be further asked to complete a questionnaire to evaluate the intervention. On the last day of the ninth-week participants of the control condition will be asked what kinds of strategies they used to actively reduce their meat intake in the last eight weeks.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Be willing and able to give informed consent
- •Be resident in the UK
- •Self report to speak English fluently
- •Self-report to eat meat at least five times per week
- •Be willing to reduce their meat intake
- •Have access to devices compatible with the delivery format of the intervention
排除标准
- •Enrolled in another dietary intervention study
- •Trying to lose weight
结局指标
主要结局
Change in mean daily meat consumption from baseline to follow-up 1, comparing intervention and control groups.
时间窗: five weeks
Meat consumption was measured with meat-frequency questionnaires administered daily during the baseline week and follow-up 1.
次要结局
- Change in mean daily consumption of meat subgroups from baseline to both follow-ups, comparing intervention and control groups.(five and nine weeks)
- Change in participants meat-eating identity from baseline to both follow-ups, comparing intervention and control groups.(five and nine weeks)
- Change in mean daily meat consumption from baseline to follow-up 2, comparing intervention and control groups.(nine weeks)
- Change in meat-free self-efficacy from baseline to both follow-ups, comparing intervention and control groups.(five and nine weeks)
- Comparison of actions taken by the control group participants and those taken by the intervention group.(nine weeks)
- Acceptability of the self-regulation intervention for reducing meat consumption(five weeks)
- Percentage of meat frequency questionnaires completed by participants(nine weeks)
- Change in mean daily meat consumption from follow-up 1 to follow-up 2, comparing intervention and control groups.(nine weeks)
研究者
ProfessorSusanJebb
Professor of Diet and Population Health
University of Oxford