Recruiting

White Potatoes

Sponsor:

Toronto Metropolitan University

Code:

NCT07230951

Conditions

Healthy

Adult

Appetite

Glycemic Response

Mealtiming

Eligibility Criteria

Sex: All

Age: 18 - 65

Healthy Volunteers: Accepted

Interventions

Oven-baked Home Fries

Oven-baked White Russet Potato

Oven-baked Fries

Deep Fried, Quick Serve Fries

Oven-baked Cauliflower Veggie Tots

Study Details

Brief summary:

The purpose of this study is to evaluate the interaction between white potato consumption and meal timing on glycemic response, subjective appetite, and energy intake in adults. The investigators hypothesize that white potatoes will modulate glycemic response, enhance satiety, and mitigate subsequent meal consumption and overall food intake when compared with meals containing low glycemic carbohydrates. Furthermore, they anticipate that the timing of white potato consumption will yield differential effects, with breakfast consumption exerting a more pronounced impact on satiety and subsequent food intake reduction compared to dinner consumption.

Conditions

Healthy

Adult

Appetite

Glycemic Response

Mealtiming

Study ID

NCT07230951

Start date

Oct 30, 2025

Status verified date

Nov, 2025

Completion date

Oct, 2027

Anticipated

Primary completion date

Oct, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 65

Healthy Volunteers: Accepted

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.

Study Design

Enrollment

30 participants

Anticipated

Allocation

Randomized

Intervention Model

Crossover

Primary purpose

Prevention

Interventions and Outcome Measures

Arms

experimental: Oven-baked Home Fries

Test Treatment

experimental: Oven-baked White Russet Potato

Test Treatment

experimental: Oven-baked Fries

Test Treatment

experimental: Deep Fried, Quick Serve Fries

Test Treatment

experimental: Oven-baked Cauliflower Veggie Tots

Test Treatment

experimental: No Side

Test Treatment

Interventions

Oven-baked Home Fries

Oven-baked Home Fries (241 g; McCain Ltd.). Test treatments matched for calories (284 kcal)

Oven-baked White Russet Potato

Oven-baked White Russet Potato (299 g). Test treatments matched for calories (284 kcal)

Oven-baked Fries

Oven-baked Fries (201 g; McCain Ltd.). Test treatments matched for calories (284 kcal)

Deep Fried, Quick Serve Fries

Deep Fried, Quick Serve Fries (108 g; McCain Ltd.). Test treatments matched for calories (284 kcal)

Oven-baked Cauliflower Veggie Tots

Oven-baked Cauliflower Veggie Tots (186 g; Green Giant). Test treatments matched for calories (284 kcal)

No Side

No side control (no caloric contribution).

Primary outcome measure

  • Glycemic Response (Acute Phase) [ Time Frame: Change from baseline (measured at baseline (0-minute), 15-minute, 30-minute, 60-minute, 90-minute, and 120-minute post-treatment consumption). ]
  • Rest-of-day Blood Glucose [ Time Frame: Continuous measurements for 24 hours post-treatment consumption. ]
  • Ad Libitum Food Intake [ Time Frame: At 120 minutes post-treatment consumption ]

Central Contacts and Locations

Locations

Centre for Urban Innovation (CUI-109), School of Nutrition, Toronto Metropolitan University

Recruiting

Toronto, Ontario, Canada, M5B2K3

Contacts

Nick Bellissimo

4169795000nick.bellissimo@torontomu.ca

More Information

Sponsor

Toronto Metropolitan University

Last update posted

Nov 17, 2025

Last verified

Nov, 2025

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Toronto Metropolitan University on 2025-11-17.