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The Effectiveness of Commercial Weight Loss Programmes

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: May 19, 2006
Last Update Posted: July 21, 2006
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.
British Broadcasting Corporation
Information provided by:
University of Surrey

The objective is to compare the effectiveness of 4 different commercial weight-loss diets available to adults in the UK.

This is achieved with a 6 month multi-centre randomised unblinded controlled trial of

  • Dr Atkins' New Diet Revolution,
  • The slimFast Plan,
  • The weight Watchers Pure Points Programme,
  • Rosemary Conley's "Eat Yourself Slim" Diet & Fitness Plan.
  • No diet (control)

Subjects are a community based sample of 300 (60 per group) otherwise healthy overweight and obese adults.

Main outcome measures are weight and body fat change over 6 months.

Condition Intervention
Obesity Behavioral: calorie controlled diet

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Official Title: A Randomised Control Trial of Commercial Weight Loss Programme in a Community Based Sample of Obese Adults.

Resource links provided by NLM:

Further study details as provided by University of Surrey:

Primary Outcome Measures:
  • Weight loss
  • Fat loss

Estimated Enrollment: 300
Study Start Date: July 2002
Estimated Study Completion Date: March 2003

Information from the National Library of Medicine

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, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Body mass index (BMI) > 27 and < 40 kg/m2.

Exclusion Criteria:

  • History of coronary heart disease
  • Type 1 or Type 2 diabetes
  • Renal, liver or respiratory failure
  • Gout
  • Taking lipid lowering or anti-hypertensive drugs
  • History of obesity with known cause (i.e. Cushings disease, hypothyroidism)
  • Previous gastric or weight loss surgery
  • Taking any weight loss drug (including Orlistat or Sibutramine)
  • Clinical depression
  • Eating disorders
  • Drug or alcohol abuse
  • Any malabsorptive state (including lactose intolerance)
  • Being treated for a malignancy
  • Being pregnant
  • Breastfeeding
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00327821

United Kingdom
University of Surrey
Guildford, Surrey, United Kingdom, GU2 7XH
Sponsors and Collaborators
University of Surrey
British Broadcasting Corporation
Principal Investigator: D J Millward, PhD University of Surrey
Study Director: H A Truby, PhD SRD University of Surrey