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Glycemic Load, Weight Loss and Cardiovascular Disease Risk

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00254215
Recruitment Status : Completed
First Posted : November 15, 2005
Last Update Posted : November 28, 2006
Meat & Livestock Australia
National Heart Foundation, Australia
Information provided by:
University of Sydney

Tracking Information
First Submitted Date  ICMJE November 13, 2005
First Posted Date  ICMJE November 15, 2005
Last Update Posted Date November 28, 2006
Study Start Date  ICMJE March 2002
Primary Completion Date Not Provided
Current Primary Outcome Measures  ICMJE
 (submitted: November 13, 2005)
  • weight loss at 12 weeks
  • Fat loss at 12 weeks
  • Lean mass change at 12 weeks
Original Primary Outcome Measures  ICMJE Same as current
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: November 13, 2005)
  • Total cholesterol, LDL and HDL cholesterol change at 12 weeks
  • glucose, insulin & measures of insulin sensitivity change at 12 weeks
  • TG change at 12 weeks
  • Leptin change at 12 weeks
  • CRP change at 12 weeks
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Glycemic Load, Weight Loss and Cardiovascular Disease Risk
Official Title  ICMJE The Effect of 4 Diets Varying in Glycemic Index, Glycemic Load, Carbohydrate and Protein, on Weight, Body Composition and Cardio-Vascular Risk Factors
Brief Summary To investigate the hypothesis that reducing the glycemic load of the diet will improve changes in body composition and cardio-vascular risk factors. The study compares a conventional reduced-fat, high carbohydrate diet with 3 means of reducing glycemic load: changing the carbohydrates to low-GI choices, replacing some of the carbohydrate with protein, or combining both effects to produce the lowest glycemic load.
Detailed Description Conventional low fat diets produce modest wegiht loss at best and the results are not well maintained. More recently there has been interest in low glycemic index and high protien diets wiht some evidence that these produce better fat loss and improvement in cardiovascular risk factors. This trial aims to evaluate these different approaches and compare the outcomes over 12 weeks. Major outcomes are weigth loss, body composition change, blood lipids change, measures of glucose homeostasis, insulin resistance, leptin and CRP.
Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 1
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE
  • Overweight
  • Obesity
Intervention  ICMJE Behavioral: high protein & low glycemic index diets
Study Arms  ICMJE Not Provided
Publications * McMillan-Price J, Petocz P, Atkinson F, O'neill K, Samman S, Steinbeck K, Caterson I, Brand-Miller J. Comparison of 4 diets of varying glycemic load on weight loss and cardiovascular risk reduction in overweight and obese young adults: a randomized controlled trial. Arch Intern Med. 2006 Jul 24;166(14):1466-75.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Completed
Enrollment  ICMJE
 (submitted: November 13, 2005)
Original Enrollment  ICMJE Same as current
Study Completion Date  ICMJE October 2004
Primary Completion Date Not Provided
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • 18-40 years of age BMI >=25 stable weight for 3 months non-vegetarian good understanding of English

Exclusion Criteria:

medications other than the contraceptive pill weight >150kg (weight limit of DEXA machine) vegetarian (diets included red meat) specific diets diabetes or impaired glucose tolerance pregnancy


Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years to 40 Years   (Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Australia
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT00254215
Other Study ID Numbers  ICMJE NHF G02S 0768 - Brand-Miller
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party Not Provided
Study Sponsor  ICMJE University of Sydney
Collaborators  ICMJE
  • Meat & Livestock Australia
  • National Heart Foundation, Australia
Investigators  ICMJE
Principal Investigator: Jennie C Brand-Miller, PhD University of Sydney
PRS Account University of Sydney
Verification Date July 2005

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP