Effect of White Potatoes on Glycemic Response and Satiety in Older Adults

NCT ID: NCT03309124

Last Updated: 2019-09-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-04-09

Study Completion Date

2019-08-01

Brief Summary

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The purpose of the present study is to explore the influence of cooking methods of potatoes on post-prandial glycaemia and satiety in healthy older adults.

Detailed Description

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Each of the 5 study sessions will be at least 7 days apart. Either meal skipping, or one of three treatments of white potatoes (a) baked (with skin), (b) mashed, (c) fried French fries, or white bread, prepared on the day of testing, will be served to healthy older adults (65+ years). Participants will consume the equivalent to 1 medium sized potato (\~280 kcal) or an equivalent amount of calories from white bread. Glycemic response, insulin, incretin hormones (glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic peptide (GIP)), dipeptidyl peptidase 4 (DPP4), and cholecystokinin (CCK) will be measured for 2 h (0, 15, 30, 45, 60, 90 and 120 min) following meal consumption, as well as mood and subjective appetite. An ad libitum test meal will be provided at 120 min to assess food intake suppression.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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White bread

Matched for energy content and available carbohydrate content of potato treatments

Group Type EXPERIMENTAL

White bread

Intervention Type OTHER

Toasted, with canola oil added to match for fat content of French fries (13.9 grams), as well as being matched for energy (280 kilocalories) and available carbohydrate content (33 grams) of potato treatments.

Baked potato with skin

Baked russet potato

Group Type EXPERIMENTAL

Baked potato with skin

Intervention Type OTHER

Baked russet potato with canola oil added once baked to match for fat content of French fries, and also matched for the salt content of white bread (280 milligrams).

Mashed potatoes

Mashed potatoes prepared from frozen, matched for available carbohydrate content of baked potato

Group Type EXPERIMENTAL

Mashed potatoes

Intervention Type OTHER

Mashed potatoes prepared from frozen, with canola oil added to match for fat content of French fries, as well as being matched for energy and available carbohydrate content of the baked potato.

Fried French fries

Matched for available carbohydrate content of baked potato

Group Type EXPERIMENTAL

Fried French fries

Intervention Type OTHER

Prepared from frozen, matched for energy and available carbohydrate content of baked potato and salt content of white bread.

Meal skipping

No food given

Group Type EXPERIMENTAL

Meal skipping

Intervention Type OTHER

No food given

Interventions

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White bread

Toasted, with canola oil added to match for fat content of French fries (13.9 grams), as well as being matched for energy (280 kilocalories) and available carbohydrate content (33 grams) of potato treatments.

Intervention Type OTHER

Baked potato with skin

Baked russet potato with canola oil added once baked to match for fat content of French fries, and also matched for the salt content of white bread (280 milligrams).

Intervention Type OTHER

Mashed potatoes

Mashed potatoes prepared from frozen, with canola oil added to match for fat content of French fries, as well as being matched for energy and available carbohydrate content of the baked potato.

Intervention Type OTHER

Fried French fries

Prepared from frozen, matched for energy and available carbohydrate content of baked potato and salt content of white bread.

Intervention Type OTHER

Meal skipping

No food given

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* be 65 years or older
* be healthy
* not be taking medications that affect food intake regulation or blood glucose

Exclusion Criteria

* anyone with food sensitivities or allergies to potatoes or potato-products,
* smokers
* diabetic or overweight/obese individuals.
Minimum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Toronto Metropolitan University

OTHER

Sponsor Role lead

Responsible Party

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Nick Bellissimo

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Nick Bellissimo, PhD

Role: PRINCIPAL_INVESTIGATOR

Toronto Metropolitan University

Locations

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School of Nutrition, Ryerson University

Toronto, Ontario, Canada

Site Status

Countries

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Canada

Other Identifiers

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REB2017-330

Identifier Type: -

Identifier Source: org_study_id

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