Interaction Between White Potato Consumption and Meal Timing on Glycemic Response and Appetite in Adults

Toronto Metropolitan University

Status: Enrolling

Conditions: Mealtiming; Healthy; Adult; Glycemic Response; Appetite

Treatments: Other: No Side; Other: Oven-baked Fries; Other: Oven-baked Home Fries; Other: Oven-baked Cauliflower Veggie Tots; Other: Deep Fried, Quick Serve Fries; Other: Oven-baked White Russet Potato

Study type: Interventional

Funder types: Other

Identifiers

NCT07230951

REB: 25-172 [A]

Details and patient eligibility

About

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.

Full description

A randomized within-subject repeated measures experiment will be used to study the interaction between white potato consumption and meal timing on glycemic response, subjective appetite, and energy intake in adults. In Experiment 1, participants will consume, in a random order on separate mornings, one of six test meals consisting of an egg omelette and a test side of: (1) Oven-baked home fries, (2) Oven-baked white russet potatoes, (3) Deep-fried, quick serve fries, (4) Oven-baked fries, (5) Oven-baked cauliflower tots, or (6) no side. Acute glycemic response and subjective appetite will be measured at baseline and over 120-mins post treatment consumption. At 120-min, food intake will be evaluated via an ad libitum lunch. Rest of day food intake and glycemic response will be collected until the participant goes to bed. Blood glucose measurements will be collected using the Dexcom G7 continuous glucose monitoring system.

Enrollment: 30 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: None (Open label)

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30 participants in 6 patient groups

Oven-baked Home Fries

Experimental group

Description:

Test Treatment

Treatment:

Other: Oven-baked Home Fries

Oven-baked White Russet Potato

Experimental group

Description:

Test Treatment

Treatment:

Other: Oven-baked White Russet Potato

Oven-baked Fries

Experimental group

Description:

Test Treatment

Treatment:

Other: Oven-baked Fries

Deep Fried, Quick Serve Fries

Experimental group

Description:

Test Treatment

Treatment:

Other: Deep Fried, Quick Serve Fries

Oven-baked Cauliflower Veggie Tots

Experimental group

Description:

Test Treatment

Treatment:

Other: Oven-baked Cauliflower Veggie Tots

No Side

Experimental group

Description:

Test Treatment

Treatment:

Other: No Side