结论：（1）少年运动员可以采用超等长训练；
It has concluded that:(1)young athletes may apply super-equal-length training;
已有的研究提示，一般认为等张运动导致心腔扩大，等长运动导致心肌肥厚，但在实际训练中，并不存在单纯的等张或等长训练。
It is generally acknowledged that the isotonic exercise can result in cardiac dilatation and the isometric exercise can cause myocardial pachynsis.
方法采用CME-1飞行员颈肌训练器对149名空军飞行员颈部前、后、左、右肌群进行等长测试。
Method The tests were performed by using CME-1 Neck Muscle Training Machine with 149 pilots volunteered as test subjects.
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