Meta-analysis of Soluble Fiber Consumption on Body Weight, Glycemia, and Insulinemia in Overweight and Obese Adults.

July 6, 2018 updated by: University of Illinois at Urbana-Champaign

Effects of Soluble Fiber Consumption on Body Weight, Glycemia, and Insulinemia in Adults With Overweight and Obesity: a Systematic Review and Meta-analysis of Randomized Controlled Trials.

Dietary fiber intake is protective against overweight and obesity; however, a significant fiber gap exists between consumption and recommended intake values. Soluble fiber beneficially impacts metabolism, and supplementation may be a feasible approach to improve body composition and glycemia in overweight and obese individuals. The investigators will evaluate results of randomized controlled trials (RCTs) of soluble fiber supplementation among overweight and obese adults for outcomes related to weight management (e.g. body mass index [BMI], body weight, body fat percentage, waist circumference) and glucose and insulin homeostasis (e.g. fasting glucose, homeostasis model assessment of insulin resistance [HOMA-IR], fasting insulin) through systematic review and meta-analysis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
609

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Urbana, Illinois, United States, 61801
        • University of Illinois, Urbana-Champaign

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Adults ≥ 18 years of age with overweight and obesity but without physician diagnosed chronic disease at screening.

Description

Inclusion Criteria:

Peer-reviewed randomized controlled trials (RCTs) will be included in the systematic review and meta-analysis if they involve participants who are:

  1. Overweight or obese (BMI ≥ 25.0 kg/m2 for U.S. populations and ≥ 23.0 kg/m2 for Asian populations and/or waist circumference ≥ 40 inches (94 cm) in men or ≥ 35 inches (80 cm) in women and/or waist-to-hip ratio ≥ 0.90 in men or ≥ 0.85 in women).
  2. Weight stable and not actively trying to lose weight at screening.
  3. Without physician-diagnosed chronic conditions at screening (e.g., dyslipidemia, hypertension, type 2 diabetes, and cardiovascular disease).
  4. Included studies will be soluble fiber supplementation interventions that are controlled feeding studies or conducted among free-living subjects that provide data for outcomes of interest.

Exclusion Criteria:

Studies will be excluded from the systematic review and meta-analysis if they meet any of the following criteria:

  1. Studies conducted in animals.
  2. Mechanistic research.
  3. Human trials involving pregnant women, breastfeeding women, or children.
  4. Conference proceedings.
  5. Articles not published in English.
  6. Studies less than 1 week in duration.
  7. Studies that pool outcome measure data for healthy weight and overweight and obese individuals.
  8. Studies involving whole food treatments or high fiber profile diets.
  9. Weight loss interventions involving other tactics, such as counseling or energy restriction.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Soluble Fiber Treatment
Participants receiving soluble fiber.
Other: Soluble Fiber
Participants receiving soluble fiber.
Placebo Treatment
Participants receiving placebo.
Other: Placebo
Participants receiving placebo.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Body mass index (kg/m2)
Time Frame: ≥ 1 week
≥ 1 week
Body weight (kg)
Time Frame: ≥ 1 week
≥ 1 week
Body fat (% fat mass)
Time Frame: ≥ 1 week
≥ 1 week
Waist circumference (cm)
Time Frame: ≥ 1 week
≥ 1 week
Fasting glucose (mmol/l)
Time Frame: ≥ 1 week
≥ 1 week
Fasting insulin (pmol/l)
Time Frame: ≥ 1 week
≥ 1 week
Homeostasis Model Assessment of Insulin Resistance (HOMA-IR)
Time Frame: ≥ 1 week
≥ 1 week

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Illinois at Urbana-Champaign

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 28, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 21, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 28, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 10, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 6, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Soluble Fiber Review

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual participant data has been previously published in the randomized controlled trials we intend to analyze.

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

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