蝶泳是四种泳姿中较难掌握的一种姿势, 它需要较强的上肢和腰腹部力量及良好的协调性,而且腰腹部的波浪动作是人们在日常生活中所不习惯的,所以需要进行长时间的专门练习。在教学过程中,常常会出现这样一种现象:当某些游泳者基本掌握了蛙泳、自由泳或仰泳以后, 就迫切的想学蝶泳。人们羡慕那种波浪形的优美潇洒的动作,但又苦于蝶泳动作结构复杂、技术 Butterfly stroke is one of the four gestures more difficult to grasp a posture, which requires strong upper limbs and waist strength and good coordination, and the wave action of the waist and abdomen is not used in everyday life, so you need For a long time specialized exercises. In the teaching process, there is often such a phenomenon: when some swimmers basic mastered the breaststroke, freestyle or backstroke, they urgently want to learn butterfly. People envy the wavy graceful and graceful movements, but suffer from the complex structure of the butterfly stroke, the technology