465 I%27m+looking+for+some+documentation%2c+source+articles%2c+etc%2e++My+Elementary+School+K%2d5+wants+to+build+a+running+track+as+part+of+the+PE+program%2e++It+sticks+in+my+head+that+running+on+a+track+surface+is+not+reccomended+for+children+because+of+Micro%2dtrauma+to+the+growth+plates+of+long+bones%2e++Is+this+still+current+thinking+and+where+can+I+find+an+article+to+prove+I%27m+not+insane+when+I+point+this+out+to+the+folks+that+just+set+aside+%2420%2c000+to+do+this%3f