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Completed

NCT Number: NCT01396460

Respiratory Quotient in Post Roux-en-Y Gastric Bypass Patients

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.

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Key information

Conditions

Morbid Obesity Body Weight Nutrition Disorders Nutritional and Metabolic Diseases Obesity Obesity, Morbid Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

20 year–65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Gastrocirurgia de Brasilia

Brasília, Federal District, 70390108, Brazil

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

breakfast (a chicken sandwich with juice)

Other

patients received a breakfast after de initial measurement

Primary outcomes

  1. 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.

Sponsors and collaborators

Lead sponsor

Gastrocirurgia, Brazil

Other

Registry information

Acronym: RQ

Important dates

Study start
2011
Primary completion
2011
Study completion
2011
First posted
Jul 18, 2011
Registry last updated
Sep 10, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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