Interventionist Procedures for Adherence to Weight Loss Recommendations in Black Adolescents

May 6, 2011 updated by: Wayne State University

Interventionist Procedures for Adherence to Weight Loss Recommendations in Black Adolescents, Phase Two

To date, attempts to construct effective weight loss interventions for African American adolescents with obesity (AAAO) have largely failed. While effective weight loss strategies and skills have been identified, lifestyle changes require youth and their families to learn new dietary and exercise behavior with repeated skills practice in natural ecology of the family. A major barrier is motivation of both parents and adolescents to engage in treatment and to adhere to behavior change recommendations. Advances in the science of increasing human motivation (both intrinsic and extrinsic) that could inform intervention development for minority youth with obesity have been insufficiently applied to date to the process of intervention development. The study brings together a multidisciplinary research group comprised of obesity intervention researchers with extensive experience in adolescent health behavior change research, basic behavioral scientists with experience in motivation and learning research and communication scientists with experience in provider-family interactions within urban populations. Basic science obesity researchers will inform intervention development by contributing a strong background in the physiological correlates of obesity. Finally experts in the area of community interventions for African American adolescents will contribute to the effective transport of these interventions to real-world settings. The overarching aims of the study are: To refine intervention protocols from our preliminary studies that maximize adolescent and parent skills, informed by learning theory, through the use of home and community-based interventions in which in-vivo opportunities are used to promote practice in making changes in dietary, exercise and sedentary behaviors in AAAO and their families (PHASE I); To develop intervention protocols that utilize findings from basic science regarding intrinsic and extrinsic motivation to maximize adolescent and family adherence to recommendations for obesity-related behavior change in AAAO and their families (PHASE I); To develop an adaptive intervention using a sequential multiple randomized assignment trial (SMART design) (PHASE II); To refine the intervention including qualitative analysis of interviews from participant families and to develop further community participation in preparation for a confirmatory randomized clinical trial (PHASE III).

There are two proposed hypotheses for this study:

  1. Families initially receiving home/community delivery of Motivational Interviewing (MI)/skills training will show greater weight loss over the course of the study than families receiving initial office-based delivery of MI/skills training.
  2. Non-responders receiving home/community delivery of MI/skills training with Contingency Management (CM) will show greater weight loss than non-responders receiving MI/skills training alone.

Study Overview

Status

Unknown

Conditions

Study Type

Interventional

Enrollment (Anticipated)

200

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Michigan
      • Detroit, Michigan, United States, 48201
        • Recruiting
        • Wayne State University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

12 years to 16 years (CHILD)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. African American adolescents age range from 12 years to 16 years and 11 months with obesity (BMI>=95th percentile or BMI>30).
  2. Adolescents may have primary obesity or obesity in combination with other medical co-morbidities.
  3. Youth with mild mental retardation may be included if they are capable of reading and understanding the study measures.

Exclusion Criteria:

  1. Obesity secondary to medication use for another disorder;
  2. Obesity in a youth with medical condition that prevents their participation in normal exercise;
  3. African American adolescent with obesity (AAAO) with thought disorders;
  4. AAAO with serious cognitive impairments;
  5. AAAO who are pregnant or have a medical condition where weight loss is contraindicated;
  6. AAAO who do not live with their primary caregiver.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Skills training
This component includes skills most proximal to adhering to the eating and weight loss plan (e.g., calorie counting, making healthy food choices, measuring food portions, scheduling snacks and meals, meal planning, completing food logs daily, following an exercise plan).
EXPERIMENTAL: Contingency Management
Contingency management uses behavioral principles to counteract the reinforcing mechanisms of food and inactivity.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from Baseline in weight-related outcomes at 6 months and 9 months
Time Frame: 6 months, 9 months
We will be measuring participants' height, weight and percentage of body fat (Bioelectrical impedance analysis).
6 months, 9 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from Baseline in Adherence to Weight Loss Recommendations at 6 months and 9 months.
Time Frame: 6 months, 9 months
Objective measures of cardiovascular fitness will be used in addition to the BLOCK Kids Food Frequency Questionnaire, and the Frequency of Fast Food Use Questionnaire.
6 months, 9 months
Change in Physiological Functioning from month 1 to 7 months
Time Frame: 1 month, 7 months
Blood samples will be obtained after a 10-12 hour fast for measurement of plasma glucose, insulin, total cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and triglyceride levels.
1 month, 7 months
Change from Baseline in Motivation at 6 months and 9 months
Time Frame: 6 months, 9 months
The Importance Ruler measure assesses how important different behaviors are to teens with regard to their weight loss. An analogous measure will be used to measure the importance of different behaviors in caregivers, as well.
6 months, 9 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: K-L Cathy Jen, Ph.D., Wayne State University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2009

Primary Completion (ANTICIPATED)

June 1, 2014

Study Completion (ANTICIPATED)

June 1, 2014

Study Registration Dates

First Submitted

April 21, 2011

First Submitted That Met QC Criteria

May 6, 2011

First Posted (ESTIMATE)

May 9, 2011

Study Record Updates

Last Update Posted (ESTIMATE)

May 9, 2011

Last Update Submitted That Met QC Criteria

May 6, 2011

Last Verified

January 1, 2011

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1U01HL097889 (NIH)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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