International Journal of Preventive Medicine (Int J Prev Med)2008-780221201012079696ENMSc, MPhil, PhD, FLT, Associate Professor of Sport Injuries, Scool of Physical Education and Sports Sciences, University of Isfahan, Isfahan, Iran. Adjunct Professor of Sports Medicine, Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL, USA.20110103<p>Association football (soccer) is certainly one of the most popular sports worldwide. It has been reported that more than 200,000 professional and 240 million amateur players, play football ¹. Compared with other sports, football is a vigorous sporting activity with relatively high incidence of injury^2,3,4,5. To decrease the number of injuries, prevent early retirement and provide a healthy and safe environment for players, preventive programs are highly recommended. For designing preventive programs, information about the incidence and risk of injury are required⁵</p>http://ijpm.mui.ac.ir/index.php/ijpm/article/view/96http://ijpm.mui.ac.ir/index.php/ijpm/article/download/96/317