Actively Recruiting
Interaction Between White Potato Consumption and Meal Timing on Glycemic Response, Subjective Appetite, and Energy Intake in Adults
Led by Toronto Metropolitan University · Updated on 2025-11-17
30
Participants Needed
1
Research Sites
N/A
Total Duration
On this page
Sponsors
T
Toronto Metropolitan University
Lead Sponsor
A
Alliance for Potato Research and Education
Collaborating Sponsor
AI-Summary
What this Trial Is About
Researchers are studying how eating white potatoes at different meal times affects blood sugar levels, feelings of fullness, and how much food adults eat afterward. They want to see if white potatoes compared to other low glycemic carbs can change these responses, especially if eaten at breakfast versus dinner. This study focuses on healthy adults aged 18 to 65 with normal body weight. Participants will take part in a randomized experiment where they eat one of six test meals on different mornings. Each test meal includes an egg omelette paired with one of these sides: oven-baked home fries, oven-baked white russet potatoes, deep-fried quick-serve fries, oven-baked fries, oven-baked cauliflower tots, or no side. Each meal contains the same calories. Blood sugar and appetite will be measured before and for two hours after eating. At two hours, participants will have a lunch where they can eat as much as they want. Blood sugar and food intake will be tracked for the rest of the day using a continuous glucose monitor. Throughout the study, participants will wear a Dexcom G7 device to continuously monitor blood glucose. Appetite and emotions will be recorded at multiple points after eating the test meals. Food intake will be measured at the unlimited lunch and during the rest of the day. The main outcomes include changes in blood sugar over two hours, blood sugar levels for 24 hours, and food consumed at lunch. Secondary measures include appetite changes, food intake for the full day, and emotional responses. The study will last one day per test meal for each participant.
CONDITIONS
Brief Title
Interaction Between White Potato Consumption and Meal Timing on Glycemic Response and Appetite in Adults
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Age between 18 and 65 years
- Healthy body weight with a body mass index (BMI) between 18.5 and 24.9 kg/m2
You will not qualify if you...
- Previous diagnosis of diabetes or gastrointestinal, liver, or kidney disease
- Major medical or surgical event within the past 6 months
- Significant weight changes in the past 6 months
- Taking medications that may affect study measures
- On a diet within the past 6 months
- Skips breakfast or unable to eat the test food
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Each test meal session lasts one day; multiple sessions on separate days
Participants consume one of six test meals in random order on separate mornings to study the interaction between white potato consumption and meal timing on glycemic response, appetite, and energy intake.
6 visits (in-person) for each test meal session
Trial Site Locations
Total: 1 location
1
Centre for Urban Innovation (CUI-109), School of Nutrition, Toronto Metropolitan University
Toronto, Ontario, Canada, M5B2K3
Actively Recruiting
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
CROSSOVER
Primary Purpose
PREVENTION
Number of Arms
6
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