Effect of Oat Bran on Bowel Function and Appetite (OATGUT)
Primary Purpose
Gastrointestinal Disorder, Functional
Status
Withdrawn
Phase
Not Applicable
Locations
Study Type
Interventional
Intervention
Oat bran (Oatwell 28)
Maltodextrin
Sponsored by
About this trial
This is an interventional basic science trial for Gastrointestinal Disorder, Functional
Eligibility Criteria
Inclusion Criteria:
- Healthy male or female between the ages of 18-60 years
- Subject has a body mass index of ≥18.5 and ≤30 kg/m2 at screening visit.
- Subject is willing to stick to their normal habitual diet excluding the consumption of any unusual high energy-rich or fat-rich meals or prolonged fasting, etc. through the study period.
- Subject is willing to maintain their habitual physical activity patterns throughout the study period.
- Subject has been weight stable within the last 6 months.
- Subject has no health conditions that would prevent him or her from fulfilling the study requirements as judged by the investigator on the basis of medical history and routine laboratory test results.
- Low fiber consumer (≤14 g per day)
- Subject is willing to follow study procedures and dietary restrictions (ex: stick to habitual diet, refrain from consuming alcohol 24 hours prior to test days).
Exclusion Criteria:
- History of a gastrointestinal disorder
- Lactose intolerant
- High fiber consumer (≥15 g per day)
- Use of pre-and probiotics in the past 90 days
- High protein consumer (i.e. vegetarians or those who follow diets high in protein such as paleo)
- History of psychological illness or conditions that may interfere with subjects ability to understand study directions
- Use of antibiotics or signs of active systemic infection in the last 6 months.
- Subjects who are on hypo/hypercaloric diet aiming for weight loss or weight gain
- History or presence of cancer in the prior 2 years (except for non-melanoma skin cancer).
- Currently pregnant, lactating or planning to be pregnant during the study period
- Regular use of dietary supplements (ex: fish oil, riboflavin, etc.), 90 days prior to study inclusion
- Exposure to any non-registered drug product within the last 30 days prior to screening visit
- History of or strong potential for alcohol or substance abuse (within 12 months of screening visit). Alcohol abuse is defined as >60g (men)/40g (women) pure alcohol per day (1.5 L/ 1 l beer resp. 0.75l/0.5l wine).
- Allergy or sensitivity to oat bran or any meals or snacks provided
- Current smoker or use of tobacco products in the past 90 days
- Concurrent or recent participation (30 days) in a dietary intervention trial
- Anything in the judgment of the investigator would interfere with the subject's ability to comply with the study (protocol), which might confound the interpretation of the study results, or put the subject at undue risk.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm Type
Active Comparator
Placebo Comparator
Arm Label
Oat bran (Oatwell 28)
Maltodextrin
Arm Description
A beverage containing 11 gram (3 gram of oat beta-glucan) of Oat bran (Oatwell 28) will be consumed before breakfast
A beverage containing 11 gram of maltodextrin will be consumed before breakfast.
Outcomes
Primary Outcome Measures
Whole gut transit time
Whole gut transit time is the time required for the passage of 80% of radio-opaque markers (ROM) which are detected by x-ray in the fecal samples collected over the next 5 days after swallowing the ROM.
Secondary Outcome Measures
Whole gut transit time
Whole gut transit time is the time required for the passage of 80% of radio-opaque markers (ROM) which are detected by x-ray in the fecal samples collected over the next 5 days after swallowing the ROM.
Stool frequency
using a bowel movement diary
Fecal output
Fecal out is the weight of the fecal samples collected over the 5 days preceding the 2 week and 4 week time point
Percent fecal moisture
Fecal moisture is determined by freeze drying fecal samples and calculating the percent moisture in the fecal sample
Bristol Stool Score
using Bristol Stool Chart
Fecal pH
Subjective measures of bowel comfort
Gastrointestinal Quality of life questionnaires (GIQLI)
Gut microbiota
Using 16S ribosomal RNA sequencing techniques
Fecal short chain fatty acids
Using gas chromatography
Fecal total bile acids
Fecal enzymes
fecal beta-glucoronidase
Fecal ammonia
Intestinal gas production
using breath hydrogen production
Appetite
Appetite will be measured via visual analogue score (VAS)
Ad libitum energy intake
Ad libitum energy intake is measured by serving the subject an excess of food
Full Information
NCT ID
NCT03014141
First Posted
December 21, 2016
Last Updated
August 9, 2018
Sponsor
DSM Nutritional Products, Inc.
1. Study Identification
Unique Protocol Identification Number
NCT03014141
Brief Title
Effect of Oat Bran on Bowel Function and Appetite
Acronym
OATGUT
Official Title
The Effect of Oat Bran on Bowel Function and Appetite. A Randomized, Double-blind, Placebo-controlled, Cross-over Intervention Study in Healthy Humans.
Study Type
Interventional
2. Study Status
Record Verification Date
August 2018
Overall Recruitment Status
Withdrawn
Why Stopped
Study supply issues
Study Start Date
June 2018 (Anticipated)
Primary Completion Date
December 2018 (Anticipated)
Study Completion Date
March 2019 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
DSM Nutritional Products, Inc.
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No
5. Study Description
Brief Summary
The consumption of oat bran fiber also has a significant bulking effect in humans. However, besides fecal bulk, dietary fiber can promote gut health in other ways. Therefore, the purpose of this study is to investigate the effects of oat bran (rich in oat beta-glucan) supplementation on bowel function and appetite.
Detailed Description
The study is a randomized, double-blind, placebo-controlled crossover study it involves a total of 8 visits with a 14 day run-in period for total study duration of 84 days. A washout period of 2 weeks will occur in between the 2, 28 day treatment periods. The effects of an oat bran beverage for breakfast on bowel function will be tested after 2 week and 4 weeks of intake.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Gastrointestinal Disorder, Functional
7. Study Design
Primary Purpose
Basic Science
Study Phase
Not Applicable
Interventional Study Model
Crossover Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
0 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Oat bran (Oatwell 28)
Arm Type
Active Comparator
Arm Description
A beverage containing 11 gram (3 gram of oat beta-glucan) of Oat bran (Oatwell 28) will be consumed before breakfast
Arm Title
Maltodextrin
Arm Type
Placebo Comparator
Arm Description
A beverage containing 11 gram of maltodextrin will be consumed before breakfast.
Intervention Type
Other
Intervention Name(s)
Oat bran (Oatwell 28)
Other Intervention Name(s)
Oat bran oat beta-glucan
Intervention Description
11 g oat bran containing 3.1 gram oat beta-glucan
Intervention Type
Other
Intervention Name(s)
Maltodextrin
Intervention Description
11 g of Maltodextrin
Primary Outcome Measure Information:
Title
Whole gut transit time
Description
Whole gut transit time is the time required for the passage of 80% of radio-opaque markers (ROM) which are detected by x-ray in the fecal samples collected over the next 5 days after swallowing the ROM.
Time Frame
4 weeks
Secondary Outcome Measure Information:
Title
Whole gut transit time
Description
Whole gut transit time is the time required for the passage of 80% of radio-opaque markers (ROM) which are detected by x-ray in the fecal samples collected over the next 5 days after swallowing the ROM.
Time Frame
2 weeks
Title
Stool frequency
Description
using a bowel movement diary
Time Frame
2 weeks and 4 weeks
Title
Fecal output
Description
Fecal out is the weight of the fecal samples collected over the 5 days preceding the 2 week and 4 week time point
Time Frame
2 weeks and 4 weeks
Title
Percent fecal moisture
Description
Fecal moisture is determined by freeze drying fecal samples and calculating the percent moisture in the fecal sample
Time Frame
2 weeks and 4 weeks
Title
Bristol Stool Score
Description
using Bristol Stool Chart
Time Frame
2 weeks and 4 weeks
Title
Fecal pH
Time Frame
2 weeks and 4 weeks
Title
Subjective measures of bowel comfort
Description
Gastrointestinal Quality of life questionnaires (GIQLI)
Time Frame
2 weeks and 4 weeks
Title
Gut microbiota
Description
Using 16S ribosomal RNA sequencing techniques
Time Frame
2 weeks and 4 weeks
Title
Fecal short chain fatty acids
Description
Using gas chromatography
Time Frame
2 weeks and 4 weeks
Title
Fecal total bile acids
Time Frame
2 weeks and 4 weeks
Title
Fecal enzymes
Description
fecal beta-glucoronidase
Time Frame
2 weeks and 4 weeks
Title
Fecal ammonia
Time Frame
2 weeks and 4 weeks
Title
Intestinal gas production
Description
using breath hydrogen production
Time Frame
2 weeks and 4 weeks
Title
Appetite
Description
Appetite will be measured via visual analogue score (VAS)
Time Frame
2 weeks and 4 weeks
Title
Ad libitum energy intake
Description
Ad libitum energy intake is measured by serving the subject an excess of food
Time Frame
2 weeks and 4 weeks
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
60 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria:
Healthy male or female between the ages of 18-60 years
Subject has a body mass index of ≥18.5 and ≤30 kg/m2 at screening visit.
Subject is willing to stick to their normal habitual diet excluding the consumption of any unusual high energy-rich or fat-rich meals or prolonged fasting, etc. through the study period.
Subject is willing to maintain their habitual physical activity patterns throughout the study period.
Subject has been weight stable within the last 6 months.
Subject has no health conditions that would prevent him or her from fulfilling the study requirements as judged by the investigator on the basis of medical history and routine laboratory test results.
Low fiber consumer (≤14 g per day)
Subject is willing to follow study procedures and dietary restrictions (ex: stick to habitual diet, refrain from consuming alcohol 24 hours prior to test days).
Exclusion Criteria:
History of a gastrointestinal disorder
Lactose intolerant
High fiber consumer (≥15 g per day)
Use of pre-and probiotics in the past 90 days
High protein consumer (i.e. vegetarians or those who follow diets high in protein such as paleo)
History of psychological illness or conditions that may interfere with subjects ability to understand study directions
Use of antibiotics or signs of active systemic infection in the last 6 months.
Subjects who are on hypo/hypercaloric diet aiming for weight loss or weight gain
History or presence of cancer in the prior 2 years (except for non-melanoma skin cancer).
Currently pregnant, lactating or planning to be pregnant during the study period
Regular use of dietary supplements (ex: fish oil, riboflavin, etc.), 90 days prior to study inclusion
Exposure to any non-registered drug product within the last 30 days prior to screening visit
History of or strong potential for alcohol or substance abuse (within 12 months of screening visit). Alcohol abuse is defined as >60g (men)/40g (women) pure alcohol per day (1.5 L/ 1 l beer resp. 0.75l/0.5l wine).
Allergy or sensitivity to oat bran or any meals or snacks provided
Current smoker or use of tobacco products in the past 90 days
Concurrent or recent participation (30 days) in a dietary intervention trial
Anything in the judgment of the investigator would interfere with the subject's ability to comply with the study (protocol), which might confound the interpretation of the study results, or put the subject at undue risk.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Joanne Slavin, PhD
Organizational Affiliation
University of Minnesota
Official's Role
Principal Investigator
12. IPD Sharing Statement
Plan to Share IPD
No
Citations:
PubMed Identifier
18926133
Citation
Grabitske HA, Slavin JL. Low-digestible carbohydrates in practice. J Am Diet Assoc. 2008 Oct;108(10):1677-81. doi: 10.1016/j.jada.2008.07.010.
Results Reference
background
PubMed Identifier
20090313
Citation
Stewart ML, Nikhanj SD, Timm DA, Thomas W, Slavin JL. Evaluation of the effect of four fibers on laxation, gastrointestinal tolerance and serum markers in healthy humans. Ann Nutr Metab. 2010;56(2):91-8. doi: 10.1159/000275962. Epub 2010 Jan 19.
Results Reference
background
PubMed Identifier
9734752
Citation
Chen HL, Haack VS, Janecky CW, Vollendorf NW, Marlett JA. Mechanisms by which wheat bran and oat bran increase stool weight in humans. Am J Clin Nutr. 1998 Sep;68(3):711-9. doi: 10.1093/ajcn/68.3.711.
Results Reference
background
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Effect of Oat Bran on Bowel Function and Appetite
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