Respiratory Quotient in Post Roux-en-Y Gastric Bypass Patients (RQ)

September 7, 2012 updated by: Silvia Leite Faria, Gastrocirurgia, Brazil

Through the values of respiratory quotient (RQ) it is possible to estimate the utilization of energy substrates by the body, or if there is a higher or lower fat oxidation. Experimental and clinical studies have shown that after Roux-en-Y Gastric Bypass (RYGBP) there is a decrease in the values of RQ, which may be associated with increased lipid oxidation in the postoperative period.

Diet Induced Thermogenesis (DIT) is an important part of Total Energy Expenditure. We would like to know how it functions among RYGBP patients.

The purpose of this study is to evaluate the RQ and DIT of patients in the post operative phase and compare the result with a control group consisting of morbid obese population.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

69

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

  • Brazil
    • Distrito Federal
      • Brasilia, Distrito Federal, Brazil, 70390108
        • Gastrocirurgia de Brasilia

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

Ages Eligible for Study

20 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Bariatric post operative population

Description

Inclusion Criteria (bariatric patients post-op)

  • With more than 1 year after surgery
  • Consent given to participate

Exclusion Criteria:

  • Pregnant women
  • Malnourished patients (anemia)
  • Tiroid disorders without treatment

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
Intervention / Treatment
bariatric patients
Bariatric post operative patients were compared with morbid obese population
Other: breakfast (a chicken sandwich with juice)
patients received a breakfast after de initial measurement
control group
morbid obese population

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Diet Induced Thermogenesis
Time Frame: 20min after standard meal
To examine the possible changes in the thermic effect of food, the patients received a standard meal. They then repeated the test 20 minutes after eating to obtain a reading of the metabolic rate by considering the DIT and RQ in the postprandial period. DIT was calculated as the difference between post prandial metabolic rate and RMR.
20min after standard meal

Collaborators and Investigators

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

Sponsor

Gastrocirurgia, Brazil

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

May 1, 2011

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

July 1, 2011

Study Registration Dates

First Submitted

July 15, 2011

First Submitted That Met QC Criteria

July 15, 2011

First Posted (Estimate)

July 18, 2011

Study Record Updates

Last Update Posted (Estimate)

September 10, 2012

Last Update Submitted That Met QC Criteria

September 7, 2012

Last Verified

September 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NCT01231087

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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