Malnutrition; Diabetes, Malnutrition; Protein, Obesity
Conditions
Keywords
Nutrition, Glycemic response, Protein quality, Food processing
Brief summary
The study looks at the comparative effects of food products made with pea, lentil, and oat flour of various particle sizes on postprandial glycemic response, appetite and food intake, and amino acid release in healthy adults.
Detailed description
A total of 60 participants (30 males, 30 females) will take part in this study at the University of Toronto. Twenty participants will be recruited to each one of three trials (pea, lentil or oat) and will attend 4 study sessions where they will consume crackers/porridge made with pea, lentil, oat, or wheat flours of different particle sizes. Questionnaires will be filled out to assess their recent food intake, physical activity, sleep quality, stress level, appetite, physical comfort, and energy/fatigue level, as well as tastefulness of the food. Blood samples will be collected at fasting and at various time points over a 2 hour period after eating to measure blood glucose, insulin, and amino acid concentrations. Before leaving, participants will receive an all-you-can-eat pizza meal to assess their food intake.
Interventions
OTHERCrackers made with whole, coarse, or fine pea and/or wheat flour
Participants will consume 1 of the 4 treatments at each of 4 study sessions in random orders such that by the end of the study, they will have consumed all 4 treatments. They will be given 10 minutes to consume the entire treatment with a glass of water.
OTHERCrackers made with whole, coarse, or fine lentil and/or wheat flour
Participants will consume 1 of the 4 treatments at each of 4 study sessions in random orders such that by the end of the study, they will have consumed all 4 treatments. They will be given 10 minutes to consume the entire treatment with a glass of water.
OTHERPorridge made with oat flour
Participants will consume 1 of the 4 treatments at each of 4 study sessions in random orders such that by the end of the study, they will have consumed all 4 treatments. They will be given 10 minutes to consume the entire treatment with a glass of water.
Sponsors
University of Saskatchewan
Saskatchewan Food Industry Development Center
University of Toronto
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
SINGLE (Subject)
Intervention model description
Randomized, controlled, crossover acute trial
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* 18-45 years of age * BMI 18.5-29.9 kg/m2 * Willing to maintain habitual diet, physical activity pattern, and body weight throughout the trial. * Willing to maintain current dietary supplement use throughout the trial. * Willing to abstain from alcohol consumption for 24h prior to all test visits. * Willing to avoid vigorous physical activity for 24h prior to all test visits. * Understanding the study procedure and willing to provide informed consent to participate in the study and authorization to release relevant protected health information to the study investigator.
Exclusion criteria
* Smoking * Thyroid problems * Previous history of cardiovascular disease, diabetes, liver or kidney disease, inflammatory bowel disease, celiac disease, short bowel syndrome, a malabsorptive syndrome, pancreatitis, gallbladder or biliary disease. * Presence of a gastrointestinal disorder or surgeries within the past year. * Known to be pregnant or lactating. * Unwillingness or inability to comply with the experimental procedures and to follow our safety guidelines. * Allergies to peanuts and nuts. * Known intolerances, sensitivity or allergy to any ingredients in the study products: pea flour, lentil flour, oat flour and whole wheat flour. * Regular breakfast skipping (consumes breakfast less than 5 days a week) * Extreme dietary habits (i.e Atkins diet, very high protein diets, etc.) or restrained eaters, identified by a score of ≥ 11 on the Eating Habits Questionnaire * Uncontrolled hypertension (systolic blood pressure \> 140 mm Hg or diastolic blood pressure \> 90 mm Hg) as defined by the average blood pressure measured at screening. * Weight gain or loss of at least 10lbs in previous three months. * Excessive alcohol intake (more than 2 drinks per day or more than 9 drinks per week). * Consuming prescription or non-prescription drug, herbal or nutritional supplements known to affect blood glucose or that could affect the outcome of the study as per investigator's judgment.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in postprandial glycemic response | Blood glucose will be measured at baseline and at 15, 30, 45, 60, 90, 120, and 140 minutes after treatment consumption. Insulin will be measured at baseline and every half an hour after treatment consumption over 2 hours. | Blood collection via finger prick to analyze blood glucose (glucometer reading) and serum insulin concentration (μIU/mL). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Food intake | 2 hours after treatment consumption. | Measured via amount of pizza (g) consumed at an ad libitum pizza meal. |
| Protein quality | At baseline and every half hour after treatment consumption over a period of 2 hours, and after pizza meal. | Intravenous blood collection to analyze amino acid concentrations (μmol/L) to determine amino acid release. |
| Subjective appetite | At baseline and at 15, 30, 45, 60, 90, 120, and 140 minutes after treatment consumption. | Motivation to Eat Adaptive Visual Analogue Scales measured based on a score between 0 to 100. A higher score indicates higher outcome. |
| Energy & fatigue | At baseline and at 15, 30, 45, 60, 90, 120, and 140 minutes after treatment consumption. | Energy and Fatigue Visual Analogue Scales measured based on a score between 0 to 100. A higher score indicates higher outcome. |
| Treatment palatability | Immediately after treatment consumption. | Treatment Palatability Visual Analogue Scales measured based on a score between 0 to 100. A higher score indicates higher outcome. |
| Physical comfort | At baseline and at 15, 30, 45, 60, 90, 120, and 140 minutes after treatment consumption. | Physical Comfort Visual Analogue Scales measured based on a score between 0 to 100. A higher score indicates higher outcome. |
Countries
Canada
Outcome results
None listed