Effectiveness of modified health belief model-based intervention to reduce body mass index for age in overweight junior high school students in Thailand
Purpose - The purpose of this paper is to determine the effectiveness of a modified HBM-based intervention to reduce body mass index (BMI) for age in overweight junior high school students. Design/methodology/approach - A cluster-randomized controlled trial was conducted in the first and second year...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
College of Public Health Sciences, Chulalongkorn University
2019-01-01
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| Series: | Journal of Health Research |
| Subjects: | |
| Online Access: | https://www.emerald.com/insight/content/doi/10.1108/JHR-08-2018-0065/full/pdf?title=effectiveness-of-modified-health-belief-model-based-intervention-to-reduce-body-mass-index-for-age-in-overweight-junior-high-school-students-in-thailand |
| Summary: | Purpose - The purpose of this paper is to determine the effectiveness of a modified HBM-based intervention to reduce body mass index (BMI) for age in overweight junior high school students. Design/methodology/approach - A cluster-randomized controlled trial was conducted in the first and second years of a junior high school in the center of Thailand. In total, 24 classrooms were randomly assigned to a modified health belief model intervention arm (HBMIA), and 24 classrooms were randomly assigned to a traditional school health education arm (control). In total, 479 students who were overweight (BMI forage = median +1 SD, aged 12–15 years) participated in the study. The HBMIA used the health belief model (HBM) as a motivator for behavioral strategies that included modifying diet and participating in physical activity. BMI, health knowledge and behavior for preventing obesity were recorded at baseline and at six months. A multilevel regression model was performed to calculate mean difference between HBMIA and control group. Findings - The students who participated in the HBMIA showed a decrease in BMI of 1.76 kg/m2, while those who participated in the control showed an increase in BMI of 1.13 kg/m2, with a mean difference of –2.88 kg/m2 (95% CI =–3.01 to –2.75), an improvement in health knowledge (mean difference 27.28; 95% CI =26.15–28.41) and an improvement in health behavior (mean difference 23.54; 95% CI =22.60–24.48). Originality/value - A modified HBM-based intervention to reduce BMI for age is effective in overweight junior high school students. |
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| ISSN: | 0857-4421 2586-940X |