Motivational Interviewing for Weight Loss

NCT ID: NCT01246349

Last Updated: 2017-11-17

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2010-09-30
• Study Completion Date: 2012-11-30

Brief Summary

The investigators studied the effect of motivational interviewing (MI) on self-efficacy, health behaviors, and health outcomes in overweight children and adolescents (ages ranging from 10 to 18 years).

Detailed Description

One empirically supported intervention with a large evidence base for improving adult outcomes in behavioral health-related disorders is Motivational Interviewing (MI). MI is strongly rooted in the client-centered therapy of Rogers (1951). Its relational stance emphasizes the importance of understanding the client's internal frame of reference and displaying unconditional positive regard for the client. Motivational interviewing can thus be defined as a client-centered, directive method of therapy for enhancing intrinsic motivation to change by exploring and resolving ambivalence. MI manifests through specific strategies, such as reflective listening, summarization, shared decision making, and agenda setting.

Adolescent participants exposed to motivational interviewing in conjunction with usual care (diet and exercise program) are expected to endorse greater self-efficacy, report increased engagement in healthy behaviors, demonstrate a decrease in body weight and report improved psychological outcomes. While motivational interviewing has been shown to increase adults' motivation to make healthy behavior changes, few adolescent studies have demonstrated this effect.

Conditions

Childhood Obesity

Keywords

Motivational Interviewing; Child and Adolescent Self-Efficacy; Health Behaviours

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Motivational Interviewing Group

For the Motivational Interviewing (MI) treatment group, a clinical psychology doctoral student trained in Motivational Interviewing administered six individual motivational interviewing treatment sessions, each 30 minutes in length.

Group Type: EXPERIMENTAL

Motivational Interviewing (Treatment Group)

Intervention Type: BEHAVIORAL

Motivational interviewing (MI) can be defined as a client-centered, directive method of therapy for enhancing intrinsic motivation to change by exploring and resolving ambivalence (Miller and Rollnick, 2002). MI manifests through specific strategies, such as reflective listening, summarization, shared decision making, and agenda setting.

Control Group

The comparison group received six social skills training sessions instead of Motivational Interviewing (MI).

Group Type: ACTIVE_COMPARATOR

Social Skills Training (Control Group)

Intervention Type: BEHAVIORAL

Within the social skills training framework, advice is given to clients and sessions are focused on assigning goals for clients to work towards without specific regard for their readiness to change. The intervention is aimed at finding appropriate ways to navigate typical social situations (e.g., how to negotiate with parents).

Interventions

Motivational Interviewing (Treatment Group)

Motivational interviewing (MI) can be defined as a client-centered, directive method of therapy for enhancing intrinsic motivation to change by exploring and resolving ambivalence (Miller and Rollnick, 2002). MI manifests through specific strategies, such as reflective listening, summarization, shared decision making, and agenda setting.

Intervention Type: BEHAVIORAL

Social Skills Training (Control Group)

Within the social skills training framework, advice is given to clients and sessions are focused on assigning goals for clients to work towards without specific regard for their readiness to change. The intervention is aimed at finding appropriate ways to navigate typical social situations (e.g., how to negotiate with parents).

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Obese youth (with Body Mass Index (BMI) ≥ to 85th percentile for age and gender (as classified by the Center for Disease Control))
• ages 10-18 years
• attending a local obesity clinic ("Healthy Weights" clinic)

Time of entry into the weight-loss program was controlled for; however, both new and current participants had the option to participate in the study.

Exclusion Criteria

• taking medication whose side effects may influence weight gain or weight loss
• did not speak English
• demonstrated a developmental delay
• reported being pregnant and/or reported having an eating disorder

• Minimum Eligible Age: 10 Years
• Maximum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

The Hospital for Sick Children

OTHER

Sponsor Role: lead

Responsible Party

Jill Hamilton

Staff Endocrinologist

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Jill Hamilton, MD

Role: PRINCIPAL_INVESTIGATOR

The Hospital for Sick Children

Locations

The Hospital for Sick Children

Toronto, Ontario, Canada

Countries

Canada

Other Identifiers

1000017625

Identifier Type: -

Identifier Source: org_study_id