en Original Research <span style="font-size:10pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"><span style="color:#7030a0">Aims:</span></span></span></span></b> <span style="font-size:9.0pt"><span cambria="" style="font-family:">Tics are known to negatively affect psychosocial performance in children and their families. Exercise is an appropriate strategy for the prevention and management of chronic diseases. This study evaluated the effect of aerobic and anaerobic fitness on psychological function in children with tic disorder and evaluated their effects by questionnaires completed by their parents<span style="background:white">.</span></span></span><span style="font-size:9.0pt"><span style="background:white"><span style="font-family:"Cambria",serif"></span></span></span></span></span></span><br> <span style="font-size:10pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"><span style="color:#7030a0">Materials & Methods:</span></span></span></span></b> <span style="font-size:9.0pt"><span cambria="" style="font-family:">A randomized controlled trial was carried out for 12 weeks in children with motor tics. Children were randomly assigned into three groups: aerobic, anaerobic, and Control (without exercise). The Yale global tic severity scale was used to investigate the tic severity. Parents completed Spence Children&rsquo;s Anxiety Scale Child and Parent Versions in the pre-test (pre-interventions) and post-test (after 12-week exercises). This study assessed the effects of aerobic and anaerobic fitness, the effect of time (pre-test & post-test), and their interaction on psychological function<span style="background:white">.</span></span></span><span style="font-size:9.0pt"><span style="background:white"><span style="font-family:"Cambria",serif"></span></span></span></span></span></span><br> <span style="font-size:10pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"><span style="color:#7030a0">Findings:</span></span></span></span></b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"> The aerobic and anaerobic fitness significantly decreased Separation Anxiety, Panic and Agoraphobia, Physical Injury Fears, Social Phobia, Obsessive-Compulsive and Generalized Anxiety (p<0.05) compared to the control group.</span></span></span><span style="font-size:9.0pt"><span style="background:white"><span style="font-family:"Cambria",serif"></span></span></span></span></span></span><br> <span style="font-size:10pt"><span style="unicode-bidi:embed"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"><span style="color:#7030a0">Conclusion:</span></span></span></span></b><span style="font-size:9.0pt"><span style="background:white"><span cambria="" style="font-family:"> Aerobic and anaerobic fitness could alleviate psychological disorders in children with tic syndrome. Parents of children with tic can be suggested to force their children to perform aerobic and anaerobic fitness to alleviate disorders.</span></span></span></span></span></span><br> &nbsp; Aerobic Fitness,Anaerobic Fitness,Physical Injury Fears,Social Phobia,Obsessive-Compulsive,Tic syndrome, 73 76 http://gmedicine.de/browse.php?a_code=A-10-1-47&slc_lang=en&sid=2 P. Noori 10031947532846001328 10031947532846001328 Yes Department of Physical Education, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran