Food, Activity and Behavior Trial (FAB)

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: NCT00640900
Recruitment Status : Unknown
Verified March 2008 by Jenny Craig, Inc..
Recruitment status was:  Active, not recruiting
First Posted : March 21, 2008
Last Update Posted : April 1, 2008
Information provided by:
Jenny Craig, Inc.

March 18, 2008
March 21, 2008
April 1, 2008
July 2007
July 2009   (Final data collection date for primary outcome measure)
weight loss [ Time Frame: 2 year ]
Same as current
Complete list of historical versions of study NCT00640900 on Archive Site
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Food, Activity and Behavior Trial
A Multi-Site Randomized Trial of a Commercial Weight Loss Program
This study will provide data on the response over 24 months to two commercial weight loss programs (center-based and telephone-based) compared to control conditions.

The first study aim is to test, in a randomized controlled trial, whether participation in the multifaceted traditional center-based commercial weight loss intervention program and/or the telephone-delivered commerical program is associated with a greater degree of weight loss at six, 12, and 18 months and whether weight loss is maintained over a 24-month period in overweight or obese women, compared to usual care or control conditions. This study utilizes a randomized study design with subjects assigned to the center-based weight loss program, telephone-delivered program, or a usual care control group. The second study aim is to describe the effect of participation in the weight loss programs (versus control conditions) on circulating lipids (fasting total plasma cholesterol and triglycerides, low-density lipoprotein [LDL] cholesterol, and high-density lipoprotein [HDL] cholesterol), carotenoids (a biomarker of vegetable and fruit intake), insulin, glucose, leptin, C-reactive protein, and vitamin D, and cardiopulmonary fitness. The center-based intervention involves in-person counseling and obtaining food items from the center, whereas the telephone-delivered program involves telephone counseling with food delivered to the home every two weeks.

Secondary aims of this study involve describing the characteristics associated with greater weight loss and maintenance in each of the two intervention arms. The hypothesis to be tested is that selected participant characteristics, such as older or younger age, might be differentially associated with greater success across the two types of programs and approaches.

Notably, the results of this study would contribute valuable data to the scientific knowledge base regarding the various modalities of communication for behavioral interventions (in-person versus telephone counseling). This is an important issue currently being considered and debated among clinical and community-based behavioral and nutritional scientists whose intervention efforts focus on promoting behavior change and positive effects on health-related outcomes such as weight reduction.

Not Applicable
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
  • Overweight
  • Obesity
  • Behavioral: Usual care
    Two individualized weight loss counseling sessions with a dietetics professional, and monthly contacts to maintain communications.
  • Behavioral: Commercial weight loss program
    Active weekly participation until weight loss goals are reached, and monthly participation to maintain the weight loss.
  • Experimental: Commercial program at center
    Intervention: Behavioral: Commercial weight loss program
  • Experimental: Commercial program over the telephone
    Intervention: Behavioral: Commercial weight loss program
  • Usual care
    Weight loss counseling
    Intervention: Behavioral: Usual care

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Unknown status
Same as current
July 2010
July 2009   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Aged 18 years and older
  • Initial BMI >25.0 kg/m2 and <40 kg/m2
  • A minimum of 15 kg over ideal weight as defined by the 1983 Metropolitan Life Insurance tables
  • Willing and able to participate in clinic visits and JC facility interactions at specified intervals and to maintain contact with the investigators for 24 months
  • Willing to allow blood collections
  • Capable of performing a simple test for assessing cardiopulmonary fitness

Exclusion Criteria:

  • Inability to participate in physical activity because of severe disability (e.g., severe arthritic conditions)
  • A history or presence of a comorbid diseases for which diet modification and increased physical activity may be contraindicated
  • Self-reported pregnancy or breastfeeding or planning a pregnancy within the next two years
  • Currently actively involved in another diet intervention study or organized weight loss program
  • Having a history or presence of a significant psychiatric disorder or any other condition that, in the investigator's judgment, would interfere with participation in the trial
Sexes Eligible for Study: Female
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
United States
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Dr. Cheryl Rock, University of California, San Diego
Jenny Craig, Inc.
Not Provided
Principal Investigator: Cheryl L Rock, PhD, RD UCSD
Jenny Craig, Inc.
March 2008

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