How white potato meals and meal timing affect blood sugar and appetite in adults
Interaction Between White Potato Consumption and Meal Timing on Glycemic Response, Subjective Appetite, and Energy Intake in Adults.
NA · Toronto Metropolitan University · NCT07230951
This test will see if eating different types of white potato sides at breakfast versus other times changes blood sugar, hunger, and how much healthy adults eat.
Quick facts
| Phase | NA |
|---|---|
| Study type | Interventional |
| Enrollment | 30 (estimated) |
| Ages | 18 Years to 65 Years |
| Sex | All |
| Sponsor | Toronto Metropolitan University (other) |
| Locations | 1 site (Toronto, Ontario) |
| Trial ID | NCT07230951 on ClinicalTrials.gov |
What this trial studies
This randomized, within-subject repeated-measures experiment compares six test breakfasts in which participants eat an egg omelette with different 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) on separate mornings in random order. Blood glucose will be collected continuously using a Dexcom G7 and subjective appetite ratings will be recorded at baseline and over the 120 minutes after the test meal. At 120 minutes participants will be offered an ad libitum lunch to measure subsequent intake, and food intake plus glycemic data will be tracked for the remainder of the day until bedtime. The design tests whether potato type and timing influence acute glycemic responses, satiety, and total daily energy intake.
Who should consider this trial
Good fit: Healthy adults aged 18–65 with a BMI of 18.5–24.9 kg/m2 who do not have diabetes or major medical conditions and who can consume the test meals are ideal candidates.
Not a fit: People with diabetes, gastrointestinal, liver or kidney disease, recent major medical events, significant recent weight change, use of medications that affect glucose or appetite, recent dieting, or those who skip breakfast are unlikely to benefit from participation.
Why it matters
Potential benefit: If successful, the results could help healthy adults choose potato types and meal timing to reduce blood sugar swings and curb overeating.
How similar studies have performed: Previous studies using glycemic-index foods and meal-timing with continuous glucose monitoring have shown mixed but promising effects on satiety and glucose control, while direct comparisons of multiple potato preparations by timing are relatively novel.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: * 18 - 65 years * within the healthy body weight range \[body mass index (BMI) between 18.5 - 24.9 kg/m2\]. Exclusion Criteria: * have a previous diagnosis of diabetes and gastrointestinal, liver or kidney disease; * have had a major medical or surgical event within the past 6 months; * have had any significant weight fluctuation in the past 6-months; * are taking medication that may influence dependent measures; * are or have been on a diet within the past 6 months; * skip breakfast or are unable to consume test treatment food.
Where this trial is running
Toronto, Ontario
- Centre for Urban Innovation (CUI-109), School of Nutrition, Toronto Metropolitan University — Toronto, Ontario, Canada (RECRUITING)
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions: Healthy, Adult, Appetite, Glycemic Response, Mealtiming