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Effects of Bran Size on Glycemic Responses

Primary Purpose

Potential Abnormality of Glucose Tolerance, Appetitive Behavior

Status
Completed
Phase
Not Applicable
Locations
Greece
Study Type
Interventional
Intervention
Glucose as reference food
White bread as reference food
Bread enriched with coarse wheat bran
Bread enriched with fine wheat bran
Bread enriched with fine wheat bran and carob seed flour
Sponsored by
Agricultural University of Athens
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional other trial for Potential Abnormality of Glucose Tolerance focused on measuring blood glucose, bran particle size, glucemic index

Eligibility Criteria

18 Years - 50 Years (Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  • Healthy, non-smoking, non-diabetic men and women, individuals with normal body mass index (BMI; between 18.5 and 24.9 kg/m2)

Exclusion Criteria:

  • severe chronic disease (e.g. coronary heart disease, diabetes mellitus, kidney or liver conditions, endocrine conditions)
  • gastrointestinal disorders
  • pregnancy
  • lactation
  • competitive sports
  • alcohol or drug dependency

Sites / Locations

  • Agricultural University of Athens

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm 5

Arm Type

Experimental

Experimental

Experimental

Experimental

Experimental

Arm Label

Glucose as reference food

White bread as reference food

Bread enriched with coarse wheat bran

Bread enriched with fine wheat bran

Bread enriched with fine wheat and carob

Arm Description

Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.

Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.

Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.

Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.

Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.

Outcomes

Primary Outcome Measures

Capillary blood glucose responses
Clinically useful change in blood glucose, defined as the restoration of glucose within normal limits during the 2hr glucose tolerance test.

Secondary Outcome Measures

Subjective appetite ratings
Useful change in subjective appetite using visual analogue scales (VAS, 100 mm, given in the form of booklet, one scale per page) before and 2hr after consumption of four different bread types.

Full Information

First Posted
October 2, 2017
Last Updated
October 18, 2017
Sponsor
Agricultural University of Athens
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1. Study Identification

Unique Protocol Identification Number
NCT03314142
Brief Title
Effects of Bran Size on Glycemic Responses
Official Title
Short-term Effects of Bran Size on Glycemic Responses in Normal Weight Healthy Adults
Study Type
Interventional

2. Study Status

Record Verification Date
October 2017
Overall Recruitment Status
Completed
Study Start Date
March 30, 2017 (Actual)
Primary Completion Date
July 30, 2017 (Actual)
Study Completion Date
September 30, 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Agricultural University of Athens

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
This study investigated the effects of bran's particle size on glycemic responses
Detailed Description
This study aimed at 1. to determine the GI and GL of three breads and 2. to investigate the effects of bran's particle size on postprandial glycemic response in healthy subjects.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Potential Abnormality of Glucose Tolerance, Appetitive Behavior
Keywords
blood glucose, bran particle size, glucemic index

7. Study Design

Primary Purpose
Other
Study Phase
Not Applicable
Interventional Study Model
Crossover Assignment
Masking
Investigator
Allocation
Randomized
Enrollment
10 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Glucose as reference food
Arm Type
Experimental
Arm Description
Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.
Arm Title
White bread as reference food
Arm Type
Experimental
Arm Description
Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.
Arm Title
Bread enriched with coarse wheat bran
Arm Type
Experimental
Arm Description
Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.
Arm Title
Bread enriched with fine wheat bran
Arm Type
Experimental
Arm Description
Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.
Arm Title
Bread enriched with fine wheat and carob
Arm Type
Experimental
Arm Description
Ten healthy, normal weight subjects (male: 7, female: 3) after 10-14 hr fast, consumed 50g available carbohydrate from white bread and glucose, two times, in different weeks as reference foods along with 250ml water; and 50g available carbohydrates from bread enriched with coarse wheat bran (CB), bread enriched with fine wheat bran (obtained by milling the coarse bran) (FB) and the FB in which 10% of the flour was substituted with carob seed flour (CSFB), tested once, in different weeks along with 250ml water. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min. The first glucose sample was taken exactly 15min after the first bite of food or drink.
Intervention Type
Other
Intervention Name(s)
Glucose as reference food
Intervention Description
Ten subjects (male: 7, female: 3) consumed 50g glucose diluted in 250ml water, tested three times, in different weeks, within 5-10min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min.
Intervention Type
Other
Intervention Name(s)
White bread as reference food
Intervention Description
Ten subjects (male: 7, female: 3) consumed 50g available carbohydrates from white bread along with 250ml water, tested twice, in different weeks, within 5-10min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120min.
Intervention Type
Other
Intervention Name(s)
Bread enriched with coarse wheat bran
Intervention Description
Ten subjects (male: 7, female: 3) consumed 50g available carbohydrates from bread enriched with coarse wheat bran along with 250ml water, tested once, in different weeks, within 5-10min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Intervention Type
Other
Intervention Name(s)
Bread enriched with fine wheat bran
Intervention Description
Ten subjects (male: 7, female: 3) consumed 50g available carbohydrates from bread enriched with fine wheat bran (obtained by milling of the coarse bran) along with 250ml water, tested once, in different weeks, within 5-10min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Intervention Type
Other
Intervention Name(s)
Bread enriched with fine wheat bran and carob seed flour
Intervention Description
Ten subjects (male: 7, female: 3) consumed 50g available carbohydrates from bread enriched with fine wheat bran (obtained by milling of the coarse bran) in which 10% of the flour was substituted with carob seed flour (CSFB) along with 250ml water, tested once, in different weeks, within 5-10min. Fingertip capillary blood glucose samples were taken at baseline, 15, 30, 45, 60, 90 and 120 min.
Primary Outcome Measure Information:
Title
Capillary blood glucose responses
Description
Clinically useful change in blood glucose, defined as the restoration of glucose within normal limits during the 2hr glucose tolerance test.
Time Frame
2 hours
Secondary Outcome Measure Information:
Title
Subjective appetite ratings
Description
Useful change in subjective appetite using visual analogue scales (VAS, 100 mm, given in the form of booklet, one scale per page) before and 2hr after consumption of four different bread types.
Time Frame
2 hours

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
50 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Healthy, non-smoking, non-diabetic men and women, individuals with normal body mass index (BMI; between 18.5 and 24.9 kg/m2) Exclusion Criteria: severe chronic disease (e.g. coronary heart disease, diabetes mellitus, kidney or liver conditions, endocrine conditions) gastrointestinal disorders pregnancy lactation competitive sports alcohol or drug dependency
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Emilia Papakonstantinou, PhD
Organizational Affiliation
Agricultural University of Athens
Official's Role
Principal Investigator
Facility Information:
Facility Name
Agricultural University of Athens
City
Athens
ZIP/Postal Code
11855
Country
Greece

12. IPD Sharing Statement

Plan to Share IPD
No

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Effects of Bran Size on Glycemic Responses

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