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1.研究对象与研究方法1.1研究对象原中国女排9名国际级运动健将,北京体育大学,沈阳体育学院部分排球专业大学生,燕山大学排球特招运动员。
1. Research objects and research methods 1.1 The object of study Former Chinese women’s volleyball team nine world-class athletes, Beijing Sport University, Shenyang Institute of Physical Education volleyball professional undergraduates, Yanshan University volleyball player recruit athletes.