en اثربخشی آموزش مهارت جرأت‌ورزی بر قلدری کردن، اضطراب حالتی رقابتی و عملکرد تحت فشار بازیکنان فوتسال ● Psychosocial Health مقاله اصيل پژوهشي Orginal Article The aim of this research was determined the effect of assertiveness training on bullying, competitive state anxiety and performance under pressure in futsal players. 32 futsal players teenage guys who scored from low to moderate were scored in assertiveness questionnaire and were purposefully placed into two experimental and control groups. The experimental group was given eight session training, and no training was given to the control group. The data collection tools were assertiveness, bullying, competitive state anxiety questionnaires and athletes&#39; performance checklist. Analysis of covariance results in bullying, competitive state anxiety and performance under pressure showed a significant difference between the two groups. In general, the results indicate the effect of assertiveness training on the bullying skills, competitive state anxiety, and performance under pressure of futsal teenage players, and suggested that assertiveness training be used to improve the performance under pressure in futsal players.<span dir="RTL"></span> Assertiveness, Bullying, Anxiety, Athletic performance 339 348 http://jrh.gmu.ac.ir/browse.php?a_code=A-10-1645-2&slc_lang=en&sid=1 Reza Aliyar Najafabadi 100319475328460018903 100319475328460018903 No Department of Physical Education and Sport Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. Zohreh Meshkati زهره zmeshkati@gmail.com 100319475328460018904 100319475328460018904 Yes Department of Physical Education and Sport Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. Rokhsareh Badami 100319475328460018905 100319475328460018905 No Department of Physical Education and Sport Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.