Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Nutritional Effect of an Amino Acid Mixture on Lean Body Mass (LBM) in Post-bariatric Surgery Patients

This study has been completed.
Abbott Nutrition
Information provided by (Responsible Party):
University of Alabama at Birmingham Identifier:
First received: May 10, 2007
Last updated: November 17, 2013
Last verified: November 2013
The Focus of this study is to look at the role of nutrition in maintaining lean body mass post-gastric bypass surgery. The purpose of this study is to test whether LBM is increased in those patients receiving a nutritional supplement of amino acids is enhanced when compared to control patients not receiving the supplement.

Condition Intervention
Post-gastric Bypass
Dietary Supplement: receive amino acid supplement

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Nutritional Effect of an Amino Acid Mixture on Lean Body Mass (LBM) in Post-bariatric Surgery Patients

Resource links provided by NLM:

Further study details as provided by University of Alabama at Birmingham:

Primary Outcome Measures:
  • Change in LBM [ Time Frame: 2 weeks and 2 months post operatively ]

Secondary Outcome Measures:
  • Change in fasting serum IGF-1, Leptin, Ghrelin, Gastric Inhibitory Polypeptide (GIP), Glucagon-Like Peptide-1 (GLP-1), Insulin, C Reactive Protein, IL-6, albumen, pre-albumin and glucose, and RMR [ Time Frame: 2 weeks and 2 months post operatively ]

Enrollment: 30
Study Start Date: June 2007
Study Completion Date: January 2010
Primary Completion Date: January 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
to receive amino acid supplement
Dietary Supplement: receive amino acid supplement
Receive amino acid supplement
No Intervention: 2
no amino acid supplement

Detailed Description:

You are being asked to participate in a pilot (initial) research study designed to test how effectively a nutritional supplement, Juven, helps people keep lean muscle mass (the amount of muscle tissue in your body) and sustain weight loss after gastric bypass surgery. Abbott laboratories, the manufacturer of Juven, sponsors this research study. Juven is commercially available without prescription in the United States.

If you decide to participate, you will have a DEXA scan to check your lean body mass, an indirect calorimetry (your breath is collected for a period of time and is analyzed) test to check your basal metabolic rate (how much energy your body uses at rest), and a blood test to check your certain hormone made by your intestines (bowel or guts). Each of these tests will be run on you three times. Once, before your gastric bypass surgery, once 2 weeks after your surgery and once two months after your surgery.

If you qualify for the study, you will be randomly (like the flip of a coin) assigned by a computer to receive either Juven twice a day by mouth, or to continue with standard care.

As part of your normal post-operative instructions, you should avoid becoming pregnant for two years after your surgery. Acceptable forms of birth control after gastric bypass include barrier methods (condoms, diaphragm, etc.), Depo-Provera (the shot) and Nuva-Ring (Vaginal ring). The birth control pill is not as reliable after gastric bypass because its absorption is unpredictable. The effects of Juven in pregnant women have not been tested. If you should become pregnant, you should stop taking Juven and notify Dr. Clements or his staff.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Each person who has been judged to be an acceptable candidate for laparoscopic gastric bypass (LGB) will be asked to participate in this protocol when they are scheduled for the operation.

Exclusion Criteria:

  • Age less than 18
  • Pregnant females
  • Weight greater than the limit of the DEXA table (Patients over 300 pounds)
  • Known allergy to any component fo the amino acid supplement
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00473356

United States, Alabama
UAB Kirklin Clinic
Birmingham, Alabama, United States, 35294
Sponsors and Collaborators
University of Alabama at Birmingham
Abbott Nutrition
Principal Investigator: Ronald H Clements, MD University of Alabama at Birmingham
  More Information

Responsible Party: University of Alabama at Birmingham Identifier: NCT00473356     History of Changes
Other Study ID Numbers: F061211001
Study First Received: May 10, 2007
Last Updated: November 17, 2013

Keywords provided by University of Alabama at Birmingham:
Morbid obesity
Lean body mass
amino acid supplement
laparoscopic gastric bypass processed this record on April 26, 2017