Korean Diet Efficacy Clinical Trial

A 13 Week Study to Examine the Effectiveness of the Korean Diet on Weight, Blood Pressure, Metabolic Parameters and Disease Control in an Australian Overweight and Obese Population.

To determine:

1. the acceptability of a Korean diet to an Australian overweight and obese population
2. which Korean recipes are easily prepared
3. the effect of a Korean diet on weight, blood pressure, and metabolic complications of obesity in this population.

Study Overview

• Status: Unknown
• Conditions: Obesity
• Intervention / Treatment: Behavioral: Provision of 2 Korean meals per day 6 days per week; Behavioral: Western Diet

Detailed Description

The primary endpoint (Korean diet acceptability) will be assessed by reliability tested questionnaire, dietary compliance, and quantities of food returned over the 12 weeks.

Analysis of differences in weight loss will be based on all participants with a baseline and a 12-week weight assessment. In order to investigate the impact of missing data, all subjects will be analysed using last weight observation carried forward and baseline weight carried forward.

Other secondary endpoints will determine the effect of the Korean diet on blood pressure, metabolic parameters and chronic metabolic disease control in the Australian population.

• Study Type: Interventional
• Enrollment (Actual): 70
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Australia
  • New South Wales
    • Sydney, New South Wales, Australia, 2006
      • The University of Sydney

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Residents of metropolitan Sydney
• Aged 18-65 years
• BMI 25-45kg/m2

Exclusion Criteria:

• Diabetes treated with oral medications or insulin
• Unstable angina or recent onset of cardiovascular disease
• Serious hepatic or renal disease
• serum transaminases (ALT or AST) > 2.5 times upper limit of normal
• serum creatinine > 1.5 times upper limit of normal or urinary microalbumin >40 mg/L or eGFR < 60ml/min/1.73m²
• Alcohol or illicit drug abuse
• Pregnant, breastfeeding, or planning pregnancy during the study
• Serious gastrointestinal disease (inflammatory bowel disease, active peptic ulcer, recent helicobacter pylori treatment)
• Treatment for an eating disorder, weight loss medications and other drugs that affect body weight e.g. some anti-psychotics, anti-depressants, or corticosteroids
• Hypothyroidism defined by elevated thyroid stimulating hormone (TSH) and low free thyroxine (fT4), or current hyperthyroidism under treatment
• Participation in another weight loss clinical trial within past 3 months
• Individuals who have lost >10% weight within past 3 months
• Vegetarian eating practices
• Inability to cook or lack of facilities for home cooking
• Inability to read and write English
• Subjects who frequently change smoking habits or who have stopped smoking within 6 months prior to screening

Study Plan

How is the study designed?

Design Details

• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Korean Diet; Provision of 2 Korean meals per day, 6 days per week	Behavioral: Provision of 2 Korean meals per day 6 days per week; At each participant's baseline visit, participant's will have an individualised lifestyle session addressing dietary and exercise goals and techniques to achieve weight loss. Participants in the Korean diet group will pick up lunch and evening meals Monday-Friday. Raw ingredients and cooking instructions will also be provided on friday for saturday meal preparation. Ongoing lifestyle sessions will be performed weekly for participants.
Active Comparator: Western Diet; Lifestyle counseling, dietary advice, grocery vouchers	Behavioral: Western Diet; At each participant's baseline visit, participant's will have an individualised lifestyle session addressing dietary and exercise goals and techniques to achieve weight loss. Participants in the Western diet group will be provided with a Western recipe cookbook and food vouchers (weekly) to purchase the necessary ingredients for the Western meal preparation. Ongoing lifestyle sessions will be performed weekly for participants.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
1. To investigate the acceptability of a Korean diet in overweight and obese Australians.	This will be determined at baseline and 4 week timepoints throughout the study by participants completing a Food Acceptability Questionnaire (FAQ). The FAQ addresses 10 components of food acceptability along a 7-point Likeart scale. The FAQ is a recognised instrument for testing food acceptability.	13 weeks
2. To examine the differences in weight loss between the Korean diet intervention and the Western diet intervention in overweight and obese Australians.	This will be determined by assessing differences at baseline and 12 weeks for weight, BMI and percent BMI change.	13 weeks

Secondary Outcome Measures

Outcome Measure	Time Frame
To investigate changes in a number of indicators of metabolic disease in both groups - including anthropometry, Blood Glucose Levels, insulin sensitivity, lipid profiles, liver function, hormone function and inflammatory markers.	13 weeks

Collaborators and Investigators

• Sponsor: University of Sydney
• Collaborators: Inje University; Korea Agro-Fisheries Trade Corporation, Seoul, Korea; Ministry for Food, Agriculture, Forestry and Fisheries, Korea
• Investigators: Principal Investigator: Ian D Caterson, AM, MBBS, BSc(Med), PhD, FRACP, University of Sydney

Study record dates

Study Major Dates

• Study Start: January 1, 2010
• Primary Completion (Anticipated): June 1, 2010
• Study Completion (Anticipated): April 1, 2011

Study Registration Dates

• First Submitted: April 22, 2010
• First Submitted That Met QC Criteria: May 13, 2010
• First Posted (Estimate): May 14, 2010

Study Record Updates

• Last Update Posted (Estimate): May 14, 2010
• Last Update Submitted That Met QC Criteria: May 13, 2010
• Last Verified: April 1, 2010

More Information

Terms related to this study

• Keywords: Korean Diet
• Other Study ID Numbers: 11-2009/12124

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No