Document Type : Original Article


1 Departments of Health Services

2 Nutrition

3 Statistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran


Background: Osteoporosis is a systemic skeletal disorder characterized by reduction of
one mass, deterioration of bone structure, increasing bone fragility, and increasing fracture
risk. Prevention of osteoporosis during childhood and adolescence is one of the most
important issues in World Health Organization. The purpose of this study was to determine
the effect of Health Belief Model based intervention on promoting nutritional behaviors
about preventive osteoporosis among the second grade middle school girl students.
Materials and Methods: This was an experimental intervention study, the research population
being 130 students who were randomly divided into groups, experimental (66) and control (64).
Before the educational program, Health Belief Model based standard questionnaire and Food
Frequency Questionnaire (FFQ) questionnaire were filled up by both the groups. The standard
questionnaire was completed three times (before, immediately, and 2 months after education)
and FFQ questionnaire was completed two times (before and 2 months after education) by
the students. After pre‑test, four educational session classes in the experimental group were
performed. Finally, data collected were analyzed by SPSS 18 computer software. Results: The
result of this study showed a significant increase in the mean score of knowledge, perceived
susceptibility, seriousness, benefits, barriers, as well as taking health action among girl
students in the experimental group. Conclusion: The findings of the present study confirmed
the practicability and effectiveness of the Health Belief Model based educational program in
promoting nutritional behaviors about prevention of osteoporosis.


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