Potato Consumption and Energy Balance

University of Alabama at Birmingham180 enrolled

Overview

A randomized, clinical trial will be performed to assess changes in body weight and fat mass with daily potato consumption versus a calorie-matched snack of almonds.

This is a 30-day randomized, controlled trial with 3 arms: 1) non-potato food (almonds), 2) standard white potato French fry, 3) standard white potato French fry with potential glycemia-modulating spice/seasoning mix added. Free-living study participants will be assigned to consume one of the 3 foods (calorie matched) each day for a 30-day period. Body composition (via dual energy x-ray absorptiometry; DXA), and blood chemistry will be assayed at baseline and study completion, along with a sub-sample of subjects participating in a meal-based tolerance tests at study completion.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

SINGLE

Enrollment

180

Conditions

Obesity

Interventions

White potato (french fries)OTHER

If randomized to this group, participants will be asked to consume 1 serving of French fries (\~300 kcal) each day for 30 days as a part of their usual dietary intake. French fries will be portioned and provided to participants.

White potato (French fries), +seasoningOTHER

If randomized to this group, participants will be asked to consume 1 serving of French fries (\~300 kcal) with added potential glycemia modifying seasoning mix each day for 30 days as a part of their usual dietary intake. French fries and seasoning will be portioned and provided to participants.

AlmondOTHER

If randomized to this group, participants will be asked to consume 1 serving of almonds that is calorically-matched to the French fries (\~300 kcal) serving in the other arms each day for 30 days as a part of their usual dietary intake. Almonds will be portioned and provided to participants.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * 18- 50 years old * Body mass index (BMI) 20- 35 * No dietary restrictions or allergies * Weight stable * Access to camera through smartphone, computer or tablet Exclusion Criteria: * Pregnancy or anticipating pregnancy or lactation * Nut or food allergy * Diagnosed diabetes (Type 1 or 2) * History of weight control surgery (bariatric or liposuction) * Consumes \>1 serving of potatoes daily before enrollment * Weight loss or gain \>5% within past 6 months * Medical conditions or medications that would prevent the ability to comply with treatment assignment and/or affect energy balance * Dependence on others for food procurement or preparation

Locations (1)

University of Alabama at Birmingham

Birmingham, Alabama, United States

Outcomes

Primary Outcomes

Change in fat mass

Determined by dual-energy X-ray absorptiometry.

Time frame: baseline and study completion (30 days)

Secondary Outcomes

Change in body weight

Time frame: baseline and study completion (30 day)

Change in fasting glucose

Time frame: baseline and study completion (30 day)

Change in fasting insulin

Time frame: baseline and study completion (30 day)

Change in HbA1c

Time frame: baseline and study completion (30 day)

Change in caloric Intake

Dietary recall by 3 day food record.

Time frame: baseline and study completion (30 days)

Meal Tolerance Test

A subset of subjects from each diet group will participate in a meal-based tolerance test with the study food items.

Time frame: Study Completion (30 day)

Data from ClinicalTrials.gov

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