Clinical trials: Portion Sizes
Eating Behavior
Combined Effects of Sequential Variety and Portion Size on Meal Intake of Women
The primary purpose of this study is to investigate the combined effects of sequential meal variety and portion size on food intake at a meal.
- Trial name
- NCT05485168
- Testing
- Sequential Variety, Single-Food, Small Portion
- Where
- United States
- Volunteers
- 52 people
- Sponsor
- Penn State University
Sensory Imagination
Evaluation of the Effect of Sensory Imagination on Food Portion Size in School-aged Children
The objective of this intervention is to evaluate the effect of sensory imagination (i.e., imagining the sensory properties of an object) on the choice of food portion size in school-aged children.
- Trial name
- NCT03350932
- Testing
- Sensory imagination about foods
- Where
- France
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Obesity
Snack Food Reinforcement in Obese and Non-obese Women
Food reinforcement, motivation to obtain food, is associated with energy intake and obesity. Finding ways to decrease the reinforcing value of unhealthy foods may help with adherence to diets and weight loss.
- Trial name
- NCT00837694
- Where
- United States
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- State University of New York at Buffalo
Health Policy
Sugar-Sweetened Beverage Portion Limit Study
This present study is an evaluation of de-identified data collected previously during a randomized controlled study (RCT). The objective of the original RCT titled "Sugar-Sweetened Beverage (SSB) Portion Limit Dining Lab RCT" was…
- Trial name
- NCT04197063
- Testing
- Sweetened beverage portion size limit
- Volunteers
- 359 people, healthy volunteers welcome
- Sponsor
- Rutgers, The State University of New Jersey
Lifestyle, Healthy, Weight Management
Implementing Strategies for Eating Behaviour Modification Based on Portion Control
This is a pre-post intervention study designed to evaluate the feasibility of a self-applied weight management intervention based on portion control.
- Conditions
- Lifestyle, Healthy, Weight Management, Behavior Change
- Trial name
- PORTIONS-4 (NCT06519539)
- Testing
- PORTIONS-4 behaviour change strategies
- Where
- Spain
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Clinica Universidad de Navarra, Universidad de Navarra
Feeding Behaviors
Effects of Energy Density and Portion Size of Milk in Preschool Children
In this study, the investigators varied both the energy density and portion size of milk served with a meal commonly consumed by preschool children.
- Trial name
- NCT02755558
- Testing
- Low energy density, High energy density, Small portion
- Where
- United States
- Volunteers
- 143 people, healthy volunteers welcome
- Sponsor
- Penn State University
Eating Behavior
Combined Effects of Simultaneous Variety and Portion Size on Meal Intake of Women
The primary purpose of this study is to investigate the combined effects of simultaneous meal variety and portion size on food intake at a meal.
- Trial name
- NCT05266183
- Testing
- Simultaneous Variety, Single-Food, Small Portion
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- Penn State University
Obesity Type 2 Diabetes Mellitus, Obesity & Overweight
Eating Behaviour Before, During, and After Obesity Medication
This study will examine how eating behaviour changes during the first 18 months of treatment with obesity medications in patients attending the St Vincent's Healthcare Group obesity service.
- Trial name
- NCT07636395
- Where
- Ireland
- Volunteers
- 30 people
- Sponsor
- University College Dublin
Food Selection, Obesity
Changing Portion Size Descriptions in a Cafeteria
The goal of this this intervention is to test the degree to which a portion size labeling intervention influences consumer selection of smaller portions at two large cafés.
- Conditions
- Food Selection, Obesity, Weight Gain, Food Preferences
- Trial name
- NCT06263621
- Testing
- Intervention "Standard"
- Where
- 2 sites in United States
- Volunteers
- 101,481 people, healthy volunteers welcome
- Sponsor
- University of Pennsylvania
Healthy, Appetite
Pasta Formulations, Portion Sizes and Their Effect on Appetite
Investigators are interested in learning how appetite responds to pasta containing different amounts of protein and fiber when provided in two different portion sizes.
- Trial name
- SET (NCT01199770)
- Testing
- Control, small, Experimental B, small, Experimental pasta C, small
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Clinical Nutrition Research Center, Illinois Institute of Technology
Dietary Habits
The PortionSize Smartphone App Pilot (PS Pilot)
The objective is to examine the preliminary validity, reliability and perceived participant satisfaction of the PortionSize app.
- Trial name
- PS Pilot (NCT04494971)
- Where
- United States
- Volunteers
- 15 people
- Sponsor
- Pennington Biomedical Research Center
Pediatric Obesity, Inhibition
Brain Mechanisms of Overeating in Children
The proposed research will follow healthy weight children who vary by family risk for obesity to identify the neurobiological and appetitive traits that are implicated in overeating and weight gain during the critical…
- Conditions
- Pediatric Obesity, Inhibition, Decision Making, fMRI
- Trial name
- RO1 (NCT03341247)
- Where
- United States
- Volunteers
- 254 people, healthy volunteers welcome
- Sponsor
- Penn State University
Portion Size
Using the Norm Range to Predict the Effect of Food Portion Size Reductions on Compensation Over 5 Days
Reducing food portion size is a potential strategy to reduce energy intake. However it is unclear at what point consumers compensate for reductions in portion size by increasing energy intake from other items.
- Trial name
- NCT03811210
- Testing
- portion size
- Where
- United Kingdom
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- University of Liverpool
Childhood Obesity, fMRI
Pilot Testing of Food Images in Children
This is a single, un-replicated visit to the Children's Metabolic Kitchen and Eating Behavior Lab designed to gather data on children's responses to images used in MRI studies.
- Trial name
- NCT03338634
- Where
- United States
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- Penn State University
Food Habits, Food, Snack
Downsizing: Snacking in Preschool Children
The aim of the study is to investigate and compare two strategies of portion control in toddlers aged 24 to 59 months (snack replacement and snack reduction).
- Conditions
- Food Habits, Food, Snack, Acceptance Processes
- Trial name
- NCT03339986
- Testing
- Reduction or Replacement
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Sophie Reale
Eating Behavior, Obesity
Investigating the Effects of Altering Portion Size Reduction Awareness on Compensatory Eating Behaviour
The present study aims to investigate whether energy intake is reduced when participants consume a reduced portion size (15% compared to the 'control' portion), and also to see whether awareness of this reduction affects energy…
- Trial name
- NCT06119295
- Testing
- Portion size manipulation
- Where
- United Kingdom
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Liverpool
Feeding Behavior
The Influence of Satiation Measures on the Portion Size Effect
The purpose of this study is to gain a better understanding of the satiation measures that influence human eating behavior in regard to intake of large portion sizes at a meal.
- Trial name
- NCT03886428
- Testing
- 100% portion size, 125% portion size, 150% portion size
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Penn State University
Feeding Behaviors
Effects of Portion Size and Energy Density of a Single Meal in Preschool Children
This study investigates the effect of varying both energy density and portion size of all foods at lunch on preschool children's intake.
- Trial name
- NCT02299531
- Testing
- Varying meal energy density and portion size
- Where
- United States
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- Penn State University
Feeding Behavior
Effects of Varying Portion Size and Palatability on Food Intake of Preschool Children
The aim of the study is to determine the effect of varying both the portion size and the appeal (palatability and presentation) of foods served to preschool children at a meal on the outcomes of food and energy intake at the meal.
- Trial name
- NCT03643250
- Testing
- Smaller Portion Size and Standard Appeal (non-divided plate), Smaller Portion Size and Enhanced Appeal (divided plate), Larger Portion Size and Standard Appeal (non-divided plate)
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Penn State University
Cardiovascular Disease, Obesity
A Small Nudge for Better Health Through Reduced Salt Intake, Increased Vegetable Intake, and Smaller Portion Size
This study will investigate whether small changes (nudges) made in a cafeteria, where participants eat for 4 weeks, can improve their food behavior and health during the 4 weeks, and 6 weeks and 6 months after their stay.
- Trial name
- NCT02808910
- Testing
- Nudged to eat less added salt and more other seasonings, Nudged to avoid foods high in salt content, and to choose foods low in salt content, Nudged to eat more vegetables
- Where
- Norway
- Volunteers
- 144 people
- Sponsor
- LHL Helse