I learn ITB (Iliotibial band friction syndrome--髂脛束摩擦症候群) today. I hope the following three links help you a little bit.(看來馬路的路面有可能誘發此症) 別輕忽了運動傷害 http://www.libertytimes.com.tw/2012/new/dec/8/today-health4.htm http://vovo2000.com/phpbb2/viewtopic-349944.html http://www.rice.edu/~jenky/sports/itband.v2.html