fa پیش بینی کننده‌های تماشای تلویزیون، بازی‌های رایانه‌ای و ویدئویی در نوجوانان شهر تبریز توصیفی Descriptive تماشاي برنامه‌هاي تلويزيون، بازي‌هاي رايانه‌اي و ويدئويي به عنوان «فعاليت نشسته» از رفتارهاي ناسالم نوپديد است که در بين نوجوانان شيوع جهاني دارد. <br>به منظور شناسايي پيش بيني کننده‌هاي رفتارهاي نشسته نوجوانان، مطالعه توصيفي، تحليلي با استفاده از پرسشنامه يادآمد فعاليت بدني ويژه نوجوانان، همراه با پرسشنامه اطلاعات جمعيتي، درک حمايت خانواده، وخودکارآمدي، به صورت خودايفا دربين نوجوانان دانش آموزان درشهر تبريز سال تحصيلي 1390-1389 انجام شد. <br>در مجموع، 402 نوجوان، 51.5 درصد دختر با ميانگين سني 12.93 (انحراف معيار 0.49) شرکت داشتند. ميانگين مدت رفتارهاي نشسته نوجوانان 193.55 (انحراف معيار99.15)، دختران170.25 (انحراف معيار89.20) و پسران 218.25 (انحراف معيار103.34) دقيقه در روز بود. اجراي تحليل رگرسيون لوجستيک نشان داد: جنس پسر (نسبت شانس= 3.01 با 95% فاصله اطمينان=4.64-1.64 ،0.001>P)، اشتغال مادر (نسبت شانس=2.36 با 95% فاصله اطمينان4.67-1.19 0.013=P) و خودکارآمدي (نسبت شانس=1.10 با %95 فاصله اطمينان= 0.99-0.94 ،0.006=P) با رفتارهاي نشسته بيش از 120 دقيقه در روز، رابطه معني‌ دار دارند.<br>جنس پسر، اشتغال مادر و خودکارآمدي، پيش بيني کننده‌هاي مؤثر بر رفتارهاي نشسته نوجوانان بود. انس با تلويزيون، بازي‌هاي رايانه‌اي و ويدئويي مستقل از سطوح فعاليت بدني نوجوان يک مشکل رواني ـ محيطي تشخيص داده شد. کاهش رفتارهاي نشسته، راهكارهاي خاص نياز دارد که بايد مستقل از سطوح فعاليت بدني متوسط و شديد نوجوانان طراحي و اجرا شود.<br></span> Objective (s): To explore predictors of the sedentary behavior, this current descriptive, analytical study was developed among a sample of adolescents in Tabriz, Iran.<br>Methods: Information on adolescent sedentary behaviors including TV viewing, video game playing and physical activity was collected by using A modified version of the Adolescent Physical Activity and Recall Questionnaire (APARQ). In addition an anonymous self-administrated questionnaire used to collect data on demographic characteristics, perceived family support and self-efficacy. Logistic regression analysis was performed to examine the association between sedentary behavior and independent variables including gender, psychosocial predictors and modrate, vigorouse physical activity.<br>Results: In all 402 adolescent students were studied. The mean age of students was 12.93 (SD=0.49) years; and51.5 % was female. Overall the mean time of sedentary behaviors on adolescents was 193.55 (SD=99.15) minutes/day, this figure for girls and boys were 170.25 (SD=89.20) and 218.25 (SD=103.34) minutes/day (P<0.001) respectively. The results obtained from multiple logistic regression analysis indicated that male gender (OR=3.01, 95%CI=1.64-4.64, P<0.001), mother employment (OR=2.36, 95%CI=1.19-4.67, P=0.013), self efficacy (OR=1.10, 95% CI=0.94-0.99, P= 0.006) were the most significant contributing factors to the high level of sedentary behavior on adolescents. Gender, mother employment and low perceived self-efficacy were recognized as the main predictors of attaching to sedentary behaviors.<br>Conclusion: It seems that sedentary behaviors independent on adolescent physical activity levels are a psycho enviromental problem. Specefic preventive programe should be developed independendly on adolescent moderate, vigrouse physical activity. رفتار نشسته, تماشای تلویزیون ,بازی‌های رایانه‌ای و ویدئویی, فعالیت بدنی, خودکارآمدی, درک حمایت خانواده Sedentary behavior, TV viewing, Computer and video game playing, Physical activity, Self efficacy, Perceived family support 691 702 http://payeshjournal.ir/browse.php?a_code=A-10-10-323&slc_lang=fa&sid=1 Behjat Shokrvash بهجت شکروش 10031947532846001383 10031947532846001383 No Department of Health Education and Promotion, School of public Health, Tehran University of Medical Sciences, Tehran, Iran Freshet Majlessi فرشته مجلسی 10031947532846001384 10031947532846001384 No Department of Health Education and Promotion, School of public Health, Tehran University of Medical Sciences, Tehran, Iran Ali Montazeri علی منتظری 10031947532846001385 10031947532846001385 No Mental Health Research Group, Health Metrics Research Center, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran Saharnaz Nedjat سحرناز نجات 10031947532846001386 10031947532846001386 No Department of Epidemiology and Biostatistics, School of Public Health, Knowledge Utilization Research Center, Tehran University of Medical Sciences, Tehran, Iran Abbas Rahimi Foroushani عباس رحیمی فروشانی 10031947532846001387 10031947532846001387 No Department of Epidemiology and Biostatistics, School of Public Health, Knowledge Utilization Research Center, Tehran University of Medical Sciences, Tehran, Iran Abolghasem Djazayery ابوالقاسم جزایری 10031947532846001388 10031947532846001388 No Department of Nutrition and Biochemistry, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Davoud Shogaezadeh داوود شجاعی زاده 10031947532846001389 10031947532846001389 No Department of Health Education and Promotion, School of public Health, Tehran University of Medical Sciences, Tehran, Iran