Effects of Mode of Administration of Soluble Fibre Blend on Glycemia, Appetite & Sensory Parameters (FI-FORM)
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Purpose
Soluble, viscous fibre has been established as an effective dietary component for lowering postprandial glycemia and promoting satiety. The effectiveness of viscous fibre has been related to its ability to increase the viscosity of the intra-luminal contents of the small intestine. Hence, the proposed mechanism with which soluble fibre affects the glycemic response, dependent on the viscosity development in the gut, would require that soluble fibre be extractable from the food matrix. This, in part, may be dependent on the food matrix that the soluble fibre is incorporated in. While properties of soluble fibre and their physiological effects have been studied extensively, limited data exists on the most effective mode of administration of fibre to optimize benefits. Furthermore, there are no studies to date that have evaluated how different modes of highly viscous soluble fibre would affect the subsequent meal. Hence, we propose a research study to determine whether the form of administration, taking into consideration the carbohydrate availability of a viscous fibre blend supplement, has a significant impact on postprandial and second meal glycemic response and subjective satiety in healthy individuals.
| Condition | Intervention | Phase |
|---|---|---|
|
Healthy |
Dietary Supplement: Soluble viscous fibre blend powder in hydrophobic matrix Dietary Supplement: Soluble viscous fibre blend in pre hydrated form Dietary Supplement: No soluble viscous fibre blend Dietary Supplement: Soluble viscous fibre blend premixed with ½ carbohydrate gel Dietary Supplement: No soluble viscous fibre blend, ½ carbohydrate jello |
Phase 1 Phase 2 |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Efficacy Study Intervention Model: Crossover Assignment Masking: Single Blind (Subject) Primary Purpose: Treatment |
| Official Title: | The Effects of Different Modes of Administration of Soluble Fibre on Postprandial and Second Meal Blood Glucose Response, Appetite and Sensory Parameters in Healthy Individuals |
- Postprandial glycemia [ Time Frame: 5 hours ] [ Designated as safety issue: Yes ]To investigate the effectiveness of soluble dietary fibre blend supplementation depending on 1) mode of administration and 2) carbohydrate incorporation on reducing postprandial glycemia when consumed with a standardized test breakfast.
- Satiety [ Time Frame: 5 hours ] [ Designated as safety issue: No ]
To investigate the effectiveness of soluble dietary fibre blend supplementation depending on 1) mode of administration and 2) carbohydrate incorporation on subjective satiety when consumed with a standardized test breakfast.
At each visit, participants will record their subjective ratings using a 100mm visual analogue scale and these ratings will be combined into a total subjective appetite score.
- Second Meal Glycemia [ Time Frame: 2 hours ] [ Designated as safety issue: No ]To investigate the effectiveness of these different methods of administration of konjac fibre blend on postprandial glycemia of the second standardized meal.
- Palatability [ Time Frame: 5 hours ] [ Designated as safety issue: No ]At each visit, participants will record their subjective ratings using a 100mm visual analogue scale and these ratings will be combined into a total subjective palatability score.
| Estimated Enrollment: | 20 |
| Study Start Date: | July 2012 |
| Estimated Study Completion Date: | October 2014 |
| Primary Completion Date: | December 2012 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Experimental: Treatment # 1
Soluble viscous fibre blend powder in hydrophobic matrix
|
Dietary Supplement: Soluble viscous fibre blend powder in hydrophobic matrix
5g soluble viscous fibre blend pre-mixed into margarine (hydrophobic matrix) + white bread + jello
|
|
Experimental: Treatment # 2
Soluble viscous fibre blend in pre hydrated form
|
Dietary Supplement: Soluble viscous fibre blend in pre hydrated form
0g soluble viscous fibre blend margarine + white bread +5g Konjac fibre prehydrated in jello
|
|
Placebo Comparator: Control # 1
No soluble viscous fibre blend
|
Dietary Supplement: No soluble viscous fibre blend
0g soluble viscous fibre blend margarine + white bread + jello
|
|
Experimental: Treatment # 3
Soluble viscous fibre blend premixed with ½ carbohydrate gel
|
Dietary Supplement: Soluble viscous fibre blend premixed with ½ carbohydrate gel
Margarine + white bread (1/2 carbohydrate) +5g soluble viscous fibre blend hydrated in jello with glucose
|
|
Placebo Comparator: Control # 2
No soluble viscous fibre blend, ½ carbohydrate jello
|
Dietary Supplement: No soluble viscous fibre blend, ½ carbohydrate jello
Margarine + white bread (1/2 carbohydrate) +5g soluble viscous fibre blend hydrated in jello with glucose
|
Detailed Description:
Following a 10-12 hr overnight fast, subjects will visit the Risk Factor Modification Centre between 8:00 am and 1:00 pm. Blood pressure and anthropometric measurements, including body weight, height, and % body fat will be taken. An initial finger prick fasting blood sample will be taken and a subjective appetite questionnaire in the form of a 100 mm visual analog scale will be completed. Subsequently, one of the 5 study meals will be administered to the subject to consume over a 10-15 minute duration accompanied by 300ml of water. Subjects will then be asked to complete a palatability questionnaire. Over the following 3 hours capillary blood samples will be taken by finger pricks at 15, 30, 45, 60, 90, 120 and 180 minutes post treatment. Appetite and symptoms questionnaires will be completed at 15, 30, 45, 60, 75, 90, and 120. At 180 min, a second standardized meal will be administered, consisting of 400kcal of pizza and 200ml of water. Further finger pick blood samples will be taken at 15, 30, 45, 60 and 120 min post pizza consumption. Upon completion of the visit, subjects will be given a 24-hour symptoms questionnaire to complete at home as an additional safety measure for a 24-hour period.
Eligibility| Ages Eligible for Study: | 18 Years to 65 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- age 18-65 years
- normal glycemic response
- BMI between 18.5 - 25 kg/m2
- peripheral systolic and diastolic blood pressure <140 mmHg and <90 mmHg, respectively.
Exclusion Criteria:
- Known reported history of liver or kidney disease, diabetes, hypertension, stroke or myocardial infarctions, thyroid disease, Celiac disease/gastrointestinal disease, or AIDS
- allergies to any of the test products
- Presence of an eating disorder
- Following a restrictive dieting regime
- Weight loss of >5kg in last 2 months
- Smoking cigarettes
- Alcohol intake >2 drinks/day
- using prescription medications or Natural Health Products;
- any condition which, in the opinion of the investigator might jeopardize the health and safety of the subject or study personnel, or adversely affect the study results
Contacts and LocationsPlease refer to this study by its ClinicalTrials.gov identifier: NCT01657058
| Canada, Ontario | |
| St.Michael's Hospital | |
| Toronto, Ontario, Canada | |
| Principal Investigator: | Vladimir Vuksan | St. Michael's Hospital, Toronto |
More Information
No publications provided
| Responsible Party: | Vladimir Vuksan, Professor, St. Michael's Hospital, Toronto |
| ClinicalTrials.gov Identifier: | NCT01657058 History of Changes |
| Other Study ID Numbers: | 12-147 |
| Study First Received: | August 1, 2012 |
| Last Updated: | March 6, 2014 |
| Health Authority: | Canada: Ethics Review Committee |
Keywords provided by St. Michael's Hospital, Toronto:
|
soluble fiber second meal effect glycemia satiety Individuals |
ClinicalTrials.gov processed this record on February 27, 2015