Tayebeh Rakhshani - MD, PhD, Nutrition research center, Department of Public Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
Seyyed Mansour Kashfi - M.D, M.P.H, Research Center for Health Sciences, Institute of health, Shiraz University of Medical Sciences, Shiraz, Iran.
Leila Movahed nezhad - MSc Student in Community Based Education of Health System, Department of Public Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
Zahra Motlagh - PhD, Research Center for Health Sciences, Institute of health, Shiraz University of Medical Sciences, Shiraz ,Iran.
Nooshin Kohan - PhD, Department of Medical Education, Virtual University of Medical Sciences, Tehran, Iran.

BackgroundAccording to the importance of self-efficacy and the role of health-promoting behaviors in training of adolescents and in order to develop interventions, better understanding of adolescents' health behaviors is required in daily life in order to target activities related to the adolescent health. This study was conducted to investigate the effect of educational intervention on self-efficacy and health-promoting behaviors in Iranian female high-school students.Materials and Methods: This quasi-experimental study was conducted on high-school girl students in Darab city, Iran in ۲۰۱۸. The sampling method was cluster and the way of assigning individuals to the experimental and control groups was simple random method (۷۰ students for experimental group and ۷۰ students for control group). The outcomes of the study were self-efficacy and health-promoting behaviors that were assessed before and two months after intervention in control and training groups. The data were analyzed using SPSS software version ۲۰.۰.Results: Mean age of participants was ۱۵.۸۲± ۰.۴۸ years. Independent t-test results showed there was no significant difference between the components of health-promoting (P>۰.۰۵), and self-efficacy (P= ۰.۵) before the educational intervention between the experimental and control groups, while there was a significant difference between the components of health-promoting and self-efficacy after the educational intervention between the experimental and control groups (P <۰.۰۵).ConclusionAmong high-school girl students, training intervention used was effective in increasing health-promoting behaviors and self-efficacy.

Adolescents, Education, Health promotion behaviors, Self-efficacy