A Trial of Two Diets for Weight and Diabetes Management

NCT ID: NCT00729196

Last Updated: 2011-02-01

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-07-31

Study Completion Date

2010-06-30

Brief Summary

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The purpose of this study is to determine whether a low-fat or low-glycemic load diet is more effective for controlling weight and blood glucose in persons with type 2 diabetes.

Detailed Description

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This research is a randomized controlled trial to compare long-term outcomes behavioral weight loss interventions that include either low-fat or low-glycemic load dietary instruction. Targets for energy intake and expenditure, and behavioral skills taught, are identical across the two diets. Additionally, both treatments include 20 weekly group sessions, followed by 10 every-other-week sessions. Participants are overweight and obese adults with type 2 diabetes. The primary outcomes are changes in weight and glycated hemoglobin. Those randomized to the low-glycemic load diet are expected to achieve greater weight losses and maintain better glycemic control at the end of treatment (i.e., week 40) and after 1 year of no-treatment follow-up (i.e., week 92).

Conditions

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Type 2 Diabetes Mellitus Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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1

Low-Glycemic Load Diet

Group Type EXPERIMENTAL

Lifestyle Modification

Intervention Type BEHAVIORAL

Weekly group therapy for 20 weeks, followed by bi-weekly group therapy for 20 weeks

2

Low-Fat Diet

Group Type ACTIVE_COMPARATOR

Lifestyle Modification

Intervention Type BEHAVIORAL

Weekly group therapy for 20 weeks, followed by bi-weekly group therapy for 20 weeks

Interventions

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Lifestyle Modification

Weekly group therapy for 20 weeks, followed by bi-weekly group therapy for 20 weeks

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Type 2 Diabetes Mellitus
* Body mass index (BMI) of 27 to 45 kg/m2 with weight \</= 136 kg (300 lbs.
* Capacity to provide written informed consent
* Systolic blood pressure between 90 and 160 mm Hg, inclusive.
* Diastolic blood pressure between 65 and 100 mm Hg, inclusive.
* Resting heart rate between 65 and 90 beats per minute, inclusive.

Exclusion Criteria

* a recent (i.e., within 1 year) myocardial infarction
* unstable angina
* malignant arrhythmias
* history of cerebrovascular, renal, or hepatic disease
* history of seizures
* protein wasting diseases (e.g., Cushing's syndrome)
* uncontrolled hypertension (\> 160/100 mm Hg)
* type 1 diabetes
* uncontrolled thyroid disease
* pregnancy or lactation
* electrolyte abnormalities
* clinically significant psychosocial impairment (principally, major depression)
* treatment with steroids
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Pennsylvania

OTHER

Sponsor Role collaborator

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role lead

Responsible Party

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University of Pennsylvania

Principal Investigators

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Anthony N Fabricatore, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Pennsylvania

Thomas A Wadden, Ph.D.

Role: STUDY_DIRECTOR

University of Pennsylvania

Virginia A Stallings, M.D.

Role: STUDY_DIRECTOR

Children's Hospital of Philadelphia

Stanley Schwartz, M.D.

Role: STUDY_DIRECTOR

University of Pennsylvania

Locations

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University of Pennsylvania, Center for Weight and Eating Disorders

Philadelphia, Pennsylvania, United States

Site Status

Countries

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United States

Other Identifiers

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K23DK070777

Identifier Type: NIH

Identifier Source: secondary_id

View Link

K23 DK70777 (completed)

Identifier Type: -

Identifier Source: org_study_id

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