下旋是花样游泳自选的基本动作,从半周或一周可以演变出多种倒立姿势下的各种变化的旋,它几乎成了自选中必不可少的组成部分,一套自选至少含有一个旋,大多数情况下含有多种多样的旋,它表明了一套自选的难度。虽然以垂直倒立姿势完成的旋最能清楚地展示运 Spin-down is the basic action of swimming tricks, from a half week or a week can evolve a variety of inverted posture of the rotation, it almost became an indispensable part of the self-selection, a set of optional at least one spin, In most cases, there are a variety of spin, it shows a set of optional difficulty. Although the rotation done in a vertical inverted position can best be clearly demonstrated