Protein Supplementation Post Bariatric Surgery

March 18, 2019 updated by: University of North Carolina, Chapel Hill

Evaluation of Body Composition and Metabolism Following Bariatric Surgery, Effects of a Protein Supplement: A Feasibility Study

Purpose: To evaluate adherence, tolerability, and total protein intake in bariatric surgery patients provided with ready-to-drink protein supplements, and to evaluate the effects of supplementation on body composition, metabolism, and health outcomes.

Participants: Patients scheduled to under go bariatric surgery aged 18-70 years old. Participants will be included if they agree to comply with the study protocol, are free of medical conditions that may contraindicate participation, and do not plan to become pregnant during the study.

Procedures (methods): Participants will complete five laboratory visits for the current study (pre-screening (visit 1), baseline testing (visit 2), and return visits at 3 weeks (visit 3), 12 weeks (visit 4), and 24 weeks (visit 5) post-surgery). The treatment group will be given a 12 week supply of a high protein, low-carbohydrate, low-fat supplement to be taken once daily during days 3-7 post-surgery, and twice daily weeks 2-12. The treatment group will follow standard of care recommendations put forth by the physician-nutritionist team, but using the provided protein supplement to meet recommendations. The control group will be asked to follow the standard of care recommendations from the physician-nutritionist team.

The primary study endpoints will be adherence, tolerability, and total protein intake in bariatric surgery patients provided with a 12-week supply of ready-to-drink protein supplements. Secondary outcomes will evaluate the effect of a protein supplement on body composition (lean mass, fat mass, percent body fat, visceral fat, muscle thickness), resting metabolic rate, clinical and endocrine blood values, functional fitness, and responses to questionnaires evaluating mood, satiety, functional independence, and health related quality of life.

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.
Interventional

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.
48

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27599
        • Exercise & Sport Science and GI Surgery UNC Hospitals

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 to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Participant is scheduled for weight loss surgery
  • Participant agrees to abstain from extraneous supplementation with creatine, β-hydroxy β-methylbutyrate, carnosine, beta-alanine, taurine, or any other supplement or prescription drug that may significantly influence body composition or metabolic rate
  • Participant has provided written and dated informed consent to participate in the study
  • Participant is willing and able to comply with the protocol
  • Participant agrees to abstain from using caffeine, tobacco, and alcohol for at least 24 hours before testing days
  • Participant agrees to abstain from exercise 24 hours prior to each testing visit
  • Participant is not currently pregnant and does not desire to become pregnant in the next six months

Exclusion Criteria:

  • Physicians on the research team believe that a pre-existing condition may influence participant safety or study outcomes, including previously diagnosed cardiovascular, metabolic, renal, hepatic, or musculoskeletal disorders
  • Participant is using, or has used one of the following dietary supplements within 8 weeks prior to enrollment: creatine, β-hydroxy β-methylbutyrate, carnosine, beta-alanine, taurine, or any other supplement or prescription drug that may significantly influence body composition or metabolic rate
  • Participant is in, or has participated in another clinical trial within 4 weeks prior to enrollment
  • Participant is pregnant or plans on becoming pregnant
  • Participant has a known allergy or sensitivity to any ingredient in the test product (determined from health history questionnaire)

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

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
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.
No Intervention: Control
Control group
Experimental: Protein Supplement
Ready to drink blinded protein supplement
Dietary supplement: Protein

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
Measure Description
Time Frame
Number of patients reporting gastrointestinal effects during use of supplementation
Time Frame: 12 weeks
Tracked using a custom survey
12 weeks
Number of shakes consumed out of the total number of shakes provided
Time Frame: 12 weeks
12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Body fat
Time Frame: 12 weeks
measured using ultrasound
12 weeks
Lean body mass
Time Frame: 12 weeks
measured using ultrasound
12 weeks
Metabolism (resting metabolic rate)
Time Frame: 12 weeks
12 weeks
Functional fitness (sit to stand test)
Time Frame: 12 weeks
12 weeks

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 North Carolina, Chapel Hill

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.
October 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.
February 1, 2019

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.
February 1, 2019

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 27, 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.
October 30, 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.
November 1, 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.
March 20, 2019

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.
March 18, 2019

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.
March 1, 2019

More Information

Terms related to this study

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.
  • 16-0529

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

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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