Factors that influence dietary behavior toward iron and vitamin D consumption based on the theory of planned behavior in Iranian adolescent girls

Nutrition Journal

Gordon A Ferns¹  Ali Alami²  Zahra Hosseini³  Maryam Tatari⁴  Alireza Jafari⁵  Seyedeh Belin Tavakoly Sany⁶  Elaheh Lael-Monfared⁷ 

[1] Department of Medical Education, Brighton and Sussex Medical School, Division of Medical Education, University of Brighton Falmer campus;Department of Public Health, School of Public Health, Social Determinants of Health Research Center, Gonabad University of Medical Sciences;Department of health, Social Determinants of Health Research Center, Gonabad University of Medical Sciences;School of Health, Torbat Heydariyeh University of Medical Sciences;Social Determinants of Health Research Center, Gonabad University of Medical Sciences;Social Determinants of Health Research Center, Mashhad University of Medical Sciences;Student Research Committee, Department of Public Health, School of Health, Shahid Beheshti University of Medical Sciences;

关键词: Iron and vitamin D supplement;    Theory of planned behavior;    Female student;    Adolescents;    Structural equation modeling;   

DOI  :  10.1186/s12937-019-0433-7

来源: DOAJ

【 摘 要 】

Abstract Background The impact of iron and vitamin D supplements among adolescent is not well understood. The prevalence of supplement use, and the behavioral intentions of adolescents was studied to better understand the data on supplement intake. We used the theory of Planned Behavior (TPB) to explore the determinants that influence supplement intake, and its potential constructs to examine determinants that influence dietary supplement behavior towards the use of iron and vitamin D supplements amongst a sample of Iranian schoolgirl. Methods This was a cross-sectional study of 485 adolescent girls aged 12–17 years. Multiple analytical models including hierarchical regression and structural equation modeling (SEM) were used to examine the association between TPB constructs and adolescent’s behavioral intentions to consume dietary supplements. Results Based on the results of SEM, constructs of TPB and knowledge were found to predict 74% of the variation in the behavioral intentions of the schoolgirls. SEM indicated that perceived behavioral control (PBC) and knowledge had significant associations with intention behaviors to take nutritional supplements. Conclusion TPB and its constructs were used to establish the determinants of iron and vitamin D intake among schoolgirls in Iran. This outcome indicates that efforts to promote behavioral intentions through targeting subjective norms, attitude, and PBC may promote supplement use.

【 授权许可】

Unknown