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The Impact of a Tpb-Based Educational Intervention on Nutritional Behaviors in Iranian Adolescent Girls: A Randomized Controlled Trial



Kaveh MH1 ; Darabi F2, 3 ; Khalajabadifarahani F4 ; Yaseri M5 ; Mohammadi MJ6, 7 ; Behrooz HRA7 ; Shojaeizadeh D8 ; Rohban A9
Authors
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Authors Affiliations
  1. 1. Research Center for Health Sciences, Department of Health Education and Promotion, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
  2. 2. Department of Public Health, Asadabad School of Medical Sciences, Asadabad, Iran
  3. 3. Department of Health Education and Health Promotion, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Population, Health and Family Planning, National Institute for Population Research, Tehran, Iran
  5. 5. Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Department of Environmental Health Engineering, School of Public Health and Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  7. 7. Asadabad School of Medical Sciences, Asadabad, Iran
  8. 8. Department of Education Health and Promotion Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  9. 9. Rehabilitation Management, School of Rehabilitation, Iran University of Medical Sciences, Tehran, Iran

Source: Fresenius Environmental Bulletin Published:2018

Abstract

Nutritional behaviors of adolescent girls are a major health concern. Adolescents are considered main target group for improvement in nutritional behaviors. This study aimed to determine the impact of an educational intervention based on theory of planned behavior (TPB) on nutritional behaviors in Iranian adolescent girls. This randomized controlled trial study was conducted among 12-16 years old high-school girls in Tehran, Iran, from September 2015 to July 2016. The study subjects were selected using multistage random cluster sampling. Then, they were randomly assigned to the intervention (n=289) and control (n=289) groups. The school-based intervention including nutrition education program based on a modified TPB was performed among intervention group. The control group received only school routine education program. Both groups were assessed at baseline, and after 6-months follow-up. The significant improvement in attitude (15.5%, 95% CI=14.7 to 19.3), subjective norms (17.5%, 95% CI=15.1 to 0.19), perceived behavioral control (16.1%, 95% CI=14.8 to 18.5), perceived parental control (13.4 %, 95% CI=11.2 to 17.6), behavioral intention (16.4%, 95% CI=14.7 to 19.3), and behavior (17.2%, 95% CI=13.7 to 20.7) was observed in intervention group compared to control group (p<0.001 for all dimensions). This study evaluates the impact of a school-based intervention, guided by TPB, on nutritional behaviors improvement as well as knowledge of adolescent girls towards those behaviors. TPB-based educational intervention can effectively improve the healthy nutritional behaviors of adolescent girls. © by PSP.
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