农村中学普遍缺少体育器材,发展推铅球的力量受到很大限制,本人在体育教学和训练中,通过对比训练,发现农村中学利用单双杠,提高推铅球的力量,效果很好。一、利用双杠练习(一)支撑行进练习目的:提高上肢伸肌力量和身体控制能力。练习方法和要求:(1)从一端跳上支撑行进到另一端下(单手移动或双手同时移动)。(2)第一周每次练习约1~2组,以后增加到2 The lack of sports equipment in rural middle schools is generally limited, and the power to develop shot put is limited. I used comparative training in physical education and training. I found that rural middle schools used parallel bars to increase the power of putting shots and they worked well. First, the use of parallel bars to practice (a) to support the practice purpose: to improve the extensor muscle strength and body control. Exercise methods and requirements: (1) Jump from one end to the other and travel down (with one hand or with both hands). (2) About 1 to 2 groups are practiced each week in the first week and increase to 2 at a later time