title: Promoting Physical Activity Participation among Adolescents: The Barriers and the Suggestions.
abstract: BACKGROUND
  Physical activity is a complex behavior. To designing the effective intervention, qualitative researches may be allowed for greater understanding of the reasons behind the adolescences' physical activity-related behaviors'.
  
  
  METHODS
  Using the grounded theory approach, including semi-structured focus group discussions (FGDs) and in-depth interviews, we conducted a quantitative study to elicit the adolescents and key informants' opinion regarding the satiation, needs, social and environmental barriers of adolescents' physical activity. For FGDs, participants were selected from volunteered adolescent (aged 10-19 years) of the populated western part of Tehran, which was selected as a research field. Key informants were invited from the health professionals and experts in the field of adolescents' health.
  
  
  RESULTS
  According to findings, although the majority of participants agreed on the important role of physical activity, the lack of essential motivation and the pressure of educational assignments remove it from the daily program priorities. Lack of a safe environment for girls' physical activity and high cost of professional sports were two first mentioned barriers. It was also suggested that future interventions should focus on improving more parents' engagement and their direct participation in physical activities with their adolescents.
  
  
  CONCLUSIONS
  We proposed the participatory strategies for adolescent's physical activity promotion. Through which target groups participation during the designing, development, and implementation of health programs led to more effective interventions.
authors: Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Science Institute, Tehran University of Medical Sciences, Tehran, Iran ; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran ; Development of Research and Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran.
authors: Niloofar
authors: N
authors: Peykari
authors: Development of Research and Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran.
authors: Monir Baradaran
authors: MB
authors: Eftekhari
authors: Reproductive Endocrinology Research Center, Research Institute For Endocrine Sciences, Shahid Beheshty University of Medical Science, Tehran, Iran.
authors: Fahimeh Ramezani
authors: FR
authors: Tehrani
authors: Health Research Institute of Tehran, Tehran University of Medical Sciences, Tehran, Iran.
authors: Hosein Malek
authors: HM
authors: Afzali
authors: Development of Research and Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran.
authors: Farzaneh
authors: F
authors: Hejazi
authors: School of Behavioral Sciences and Mental Health, Tehran Psychiatric Institute, Iran University of Medical Sciences, Tehran, Iran.
authors: Mehrdad Kazemzadeh
authors: MK
authors: Atoofi
authors: Departement of Community Medicine, Alborz University of Medical Sciences, Karaj, Iran ; Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Science Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors: Mostafa
authors: M
authors: Qorbani
authors: Department of Medical Emergencies, Qom University of Medical Sciences, Qom, Iran.
authors: Hamid
authors: H
authors: Asayesh
authors: Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Science Institute, Tehran University of Medical Sciences, Tehran, Iran ; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran ; Development of Research and Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran.
authors: Shirin
authors: S
authors: Djalalinia
keywords: Adolescents; Iran; barriers; needs; physical activity