美式腰旗橄榄球是源于美国国家橄榄球大联盟（NFL）推广的一项大众化橄榄球运动，是以参赛运动员佩戴腰旗而得名。
American Flag football is derived from the United States National Football League ( NFL ) extension of a popular sport of rugby , which is named by the athletes to wear waist flag .
腰旗橄榄球