 In Greece, an analysis of a national registry estimated the incidence of equestrian injury to be 21 per 100,000 person-years for farming and equestrian sports combined, and 160 times higher for horse racing personnel.Other findings noted that helmets likely prevent traumatic brain injuries.In the United States each year an estimated 30 million people ride horses, resulting in 50,000 emergency department visits (1 visit per 600 riders per year).