The Effect of Various Serving Sizes of Lentils and Other Starchy Meals on Post Prandial Blood Glucose Response and Insulin
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- University of Guelph
- Enrollment
- 48
- Locations
- 1
- Primary Endpoint
- Postprandial Blood Glucose
Study Overview
Brief Summary
The purpose of this study is to assess the effects of consuming either 1/2 or 1/4 cup servings of lentils on post-prandial blood glucose and insulin as compared to 4 types of starchy foods (corn, macaroni, white potato, white rice).
Detailed Description
Eligible participants will undergo a total of 6 study visits. During each visit, a fasted blood sample will be taken by fingerprick, and approximately 500 µL of blood will be dripped into a collection tube. The participant will then consume a meal of either: two types of lentils, corn, macaroni, white rice, or white potato. All study days will be randomized. Each meal will be served in either 1/4 or 1/2 cup servings depending on the study block. Six more blood samples will be taken by fingerprick at 15, 30, 45, 60, 90 and 120 minutes after the beginning of the meal.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Crossover
- Primary Purpose
- Other
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to 40 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Healthy men and women
- •Age 18-40 years
- •Body mass index (BMI) 20-30 kg/m2
Exclusion Criteria
- •Tobacco use
- •Pregnant or breastfeeding
- •Fasting blood glucose ≥ 7.0 mmol/L
- •Two hour blood glucose ≥ 11.1 mmol/L after consuming 75g glucose drink (Oral Glucose Tolerance Test beverage)
- •Any major medical condition including a history of AIDS or hepatitis
- •Medical or surgical event requiring hospitalization within 3 months of randomization
- •Any medications except a stable dose (3 months) of oral contraceptives, blood pressure or statin medications
- •Blood pressure >140/90 mm Hg
- •Natural health products (NHPs) used for glycemic control
- •Probiotic supplements
- •Dietary fibre supplements
- •Consumption of >4 servings of pulses per week
- •Food allergy or non-food life threatening allergy
- •Shift workers
- •Alcohol consumption >14 drinks/week or >4 drinks/sitting
- •Recent or intended significant weight loss or gain (>4 kg in previous 3 months)
- •Elite athletes
Arms & Interventions
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- Small red lentil (Other)
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- Small green lentil (Other)
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- corn (Other)
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- macaroni (Other)
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- white potato (Other)
1/4 cup
1/4 cup serving size arm
Intervention: 1/4 cup- white rice (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- white potato (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- small red lentil (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- small green lentil (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- corn (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- macaroni (Other)
1/2 cup
1/2 cup serving size arm
Intervention: 1/2 cup- white rice (Other)
Outcomes
Primary Outcomes
Postprandial Blood Glucose
Time Frame: 2 hours Postprandial
Postprandial Blood Insulin
Time Frame: 2 hours postprandial
Secondary Outcomes
No secondary outcomes reported
Investigators
Alison Duncan
Professor
University of Guelph