TTM-Based Intervention for Weight Management Among High School Female Students

Efficacy of the Transtheoretical Model of Change-Based Intervention on Weight Management Behavior Among High School Female Students: A Randomized Controlled Trial

To examine the efficacy of a Transtheoretical Model (TTM)-based intervention in improving weight management behaviors.

1. To identify if the student age, body mass index (BMI) and socioeconomic status can predict WMB.
2. To investigate the difference in students' WMB between groups of grade, liven arrangement, socioeconomic class, and BMI.

This randomized controlled trial aims to evaluate the efficacy of a Transtheoretical Model (TTM)-based behavioral intervention in improving weight management behaviors among high school female students. The intervention is designed to guide participants through the stages of behavior change, enhancing their readiness to adopt and maintain healthy lifestyle practices such as balanced nutrition, physical activity, and weight control behaviors. The study will compare outcomes between an intervention group receiving structured TTM-based sessions and a control group receiving standard health education. Primary outcomes will focus on changes in weight management behaviors, while secondary outcomes may include changes in stage of readiness for change, self-efficacy, and health-related attitudes. The findings are expected to provide evidence on the effectiveness of stage-based behavioral interventions in promoting healthy weight management among adolescent females.

Inclusion Criteria:

• Female high school students
• Age 15-19 years
• Overweight or obese according to Body Mass Index (BMI) criteria
• Enrolled in high school morning classes
• Willing to participate in the study and provide informed consent

Exclusion Criteria:

• Students below high school level (e.g., middle school students)
• Students with physical disabilities that prevent participation in physical activity
• Students with chronic medical conditions affecting body weight or study participation