The Comparison of a Technology-Based System and an In-Person Behavioral Weight Loss Intervention

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
John M. Jakicic, PhD, University of Pittsburgh
ClinicalTrials.gov Identifier:
NCT01134874
First received: May 25, 2010
Last updated: June 12, 2012
Last verified: June 2012

May 25, 2010
June 12, 2012
August 2009
September 2010   (final data collection date for primary outcome measure)
weight [ Time Frame: change from 0 to 6 months ] [ Designated as safety issue: No ]
Body weight will be assessed on a digital scale to assess change in body weight over the intervention period.
Same as current
Complete list of historical versions of study NCT01134874 on ClinicalTrials.gov Archive Site
  • cardiorespiratory fitness [ Time Frame: 0, 6, 12, months ] [ Designated as safety issue: No ]
    A graded exercise test on a treadmill along with indirect calorimetry will be used to measure cardiorespiratory fitness. This will provide a measure of oxygen consumption and metabolic equivalents of work at the time of test termination.
  • body composition [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    Body composition will be assessed using dual energy X-ray absorptiometry (DXA). This will provide a measure of lean body mass, fat mass, bone mineral content, and percent body fat.
  • physical activity [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    A questionnaire and a portable device worn on the upper arm will be used to measure and quantify energy expenditure from physical activity.
  • dietary intake [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    A questionnaire will be used to assess self-reported food intake. This will be used to estimate calories, dietary fat, protein, and carbohydrates consumed.
  • psychosocial and behavioral measures [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    Questionnaires will be used to assess self-efficacy for weight loss and physical activity, barriers to physical activity and weight loss, expected outcomes resulting from physical activity and weight loss, perceived body image, depressive symptomotology, weight history, dietary disinhibition and restraint, and behaviors typically related to weight loss (e.g., self-weighing, meal planning, etc.).
  • Weight change [ Time Frame: weight at 0, 6, and 12 months ] [ Designated as safety issue: No ]
    Body weight measured on a digital scale
  • cardiorespiratory fitness [ Time Frame: 0, 6, 12, months ] [ Designated as safety issue: No ]
    A graded exercise test on a treadmill along with indirect calorimetry will be used to measure cardiorespiratory fitness. This will provide a measure of oxygen consumption and metabolic equivalents of work at the time of test termination.
  • body composition [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    Body composition will be assessed using DXA. This will provide a measure of lean body mass, fat mass, bone mineral content, and percent body fat.
  • physical activity [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    A questionnaire and a portable device worn on the upper arm will be used to measure and quantify energy expenditure from physical activity.
  • dietary intake [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    A questionnaire will be used to assess self-reported food intake. This will be used to estimate calories, dietary fat, protein, and carbohydrates consumed.
  • psychosocial and behavioral measures [ Time Frame: 0, 6, 12 months ] [ Designated as safety issue: No ]
    Questionnaires will be used to assess self-efficacy for weight loss and physical activity, barriers to physical activity and weight loss, expected outcomes resulting from physical activity and weight loss, perceived body image, depressive symptomotology, weight history, dietary disinhibition and restraint, and behaviors typically related to weight loss (e.g., self-weighing, meal planning, etc.).
  • Weight change [ Time Frame: weight at 0, 6, and 12 months ] [ Designated as safety issue: No ]
    Body weight measured on a digital scale
Not Provided
Not Provided
 
The Comparison of a Technology-Based System and an In-Person Behavioral Weight Loss Intervention
The Comparison of a Technology-Based System and an In-Person Behavioral Weight Loss Intervention

The primary aim of this study is to compare the changes in body weight between a technology-based system, an in-person behavioral weight loss intervention, and a combination of both during a 12 month behavioral weight loss intervention in adults. Sedentary, healthy overweight and obese adults will be recruited to participate. Assessments will be conducted at 0, 6, and 12 months. This is a randomized trial in which participants will be randomized to one of three groups: standard behavioral weight loss (SBWL), standard behavioral weight loss plus technology (SBWL+TECH), and technology alone alone (TECH).

Not Provided
Interventional
Phase 2
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Obesity
  • Behavioral: Standard weight loss intervention
    In-person weight loss sessions, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week.
  • Behavioral: Standard weight loss intervention plus technology
    In-person weight loss sessions, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week, plus technology to provide real-time feedback on energy expenditure, plus a website to log dietary intake.
  • Behavioral: Technology only
    One intervention telephone call per month, dietary intake prescription of 1200-1500 kcal per day, exercise progressing to 300 minutes per week, plus technology to provide real-time feedback on energy expenditure, plus a website to log dietary intake.
  • Experimental: Standard weight loss intervention
    Intervention: Behavioral: Standard weight loss intervention
  • Experimental: Standard weight loss intervention plus technology
    Intervention: Behavioral: Standard weight loss intervention plus technology
  • Experimental: Technology only
    Intervention: Behavioral: Technology only
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
75
September 2010
September 2010   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • ages of 21-55 years
  • Body mass index (BMI) between 25-39.9 kg/m2

Exclusion Criteria:

  • Currently pregnant, pregnant in the last 6 months, or plan on becoming pregnant in the next 6 months.
  • Currently participating in regular exercise for over 60 minutes/week.
  • Taking any medications that affect body weight or metabolism (e.g. synthroid).
  • Have any physical limitations that would prevent exercise.
  • Currently being treated for coronary heart disease, diabetes mellitus, hypertension, or cancer.
  • Have a history of myocardial infarction or other heart-related surgeries.
  • Have a resting systolic blood pressure > 150 mmHg or diastolic blood pressure of > 100 mmHg or currently taking any medications that affect blood pressure or heart rate (e.g. beta blockers).
  • Currently enrolled in a commercial weight loss program, participating in another weight loss study, or in a weight loss study in the last 12 months.
  • Have lost > 5% of current body weight in the past 6 months.
  • Currently being treated for any psychological problems or taking any psychotropic medication.
  • Currently do not have access to a computer and the Internet that can be used for this study. This requires a PC computer, the ability to load software for the technology system, an existing internet connection provided by the participant, and a dedicated USB port to allow the armband from the technology system to be connected to the computer for the download of information.
Both
18 Years to 55 Years
No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT01134874
PRO09040121
No
John M. Jakicic, PhD, University of Pittsburgh
John M. Jakicic, PhD
Not Provided
Principal Investigator: John M. Jakicic, PhD University of Pittsburgh
Study Director: Steve Verba, MS University of Pittsburgh
University of Pittsburgh
June 2012

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