The Role of Satiety in the Effect of Portion Size on Intake
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 14
- 试验地点
- 2
- 主要终点
- Differences in intake by weight
研究概览
简要总结
The study uses a crossover design in which the portion size of food is varied at each meal. Across four test meals, subjects will be served four different portions of food, and intake will be determined from pre- and post-meal food weights. The first visit will be a screening visit, at which subjects will complete the consent form, have their height and weight measured, and rate the taste of the study food. Test meals will be scheduled once a week for four weeks. At visits 2-5, subjects will eat lunch and rate characteristics of the meal. At visit 6, subjects will complete various questionnaires. The objective of this study is to determine whether any individual characteristics related to satiety influence the effect of portion size on intake.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 20 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Be willing and able to travel to Penn State University Park campus weekly for meals
- •Be a man or woman 18 - 60 years old
- •Regularly eat 3 meals/day
- •Be willing to avoid alcohol the day before and during test days
- •Have a body mass index between 18.0 and 35.0 kg/m-squared
- •Be willing to refrain from eating after 10 pm the evening before test sessions
排除标准
- •An athlete in training
- •Pregnant or breastfeeding at the time of screening
- •Have taken prescription or non-prescription drugs that may affect appetite or food intake within the last 3 months
- •Dislike or be unable to eat the test foods (because of allergies, intolerance, or dietary restrictions)
- •Currently dieting to gain or lose weight
- •Have a health condition that affects appetite
- •Have participated in a similar study in our lab in the past year
研究组 & 干预措施
100% Portion Size
Test meal consists of baseline (100%) portion size of meal.
干预措施: 100% Portion Size (Other)
125% Portion Size
Test meal consists of food portion size that is 125% the size of baseline portion.
干预措施: 125% Portion Size (Other)
150% Portion Size
Test meal consists of food portion size that is 150% the size of baseline portion.
干预措施: 150% Portion Size (Other)
175% Portion Size
Test meal consists of food portion size that is 175% the size of baseline portion.
干预措施: 175% Portion Size (Other)
结局指标
主要结局
Differences in intake by weight
时间窗: Weeks 1, 2, 3, and 4
Weights (grams) of all foods consumed
Differences in energy intake
时间窗: Weeks 1, 2, 3, and 4
Calculated energy intake (kcal) based on weight and energy density of food consumed
次要结局
- Sensory-specific satiety(Weeks 1, 2, 3, and 4)
- Ratings of meal characteristics(Weeks 1, 2, 3, and 4)
- Eating rate(Weeks 1, 2, 3, and 4)
- Ratings of hunger and satiety(Weeks 1, 2, 3, and 4)
- Ratings of sensory characteristics of the food(Weeks 1, 2, 3, and 4)
研究者
Barbara J. Rolls
BJR
Penn State University