6Strength And Power In Sport. V01ume3 of The encyclopaedia of sports medicine[M]. Oxford Blackwell scientific publications, 1992.
7J.A. Simpson & E. S. C. Weiner. The Oxford English DiCtionary(Second Edition) [M]. Volume XVI. Clarendon Press. Oxford.1989: 879.
8Manfred Grosset. Etc. Konditionstraining: Throrie und Praxis aller Sportarten[M]. BLV Sportwissen. 1993:34.
9Frank W. DiCk, Sports Training Principles[ M]. Third edition. Printed and bound in Great Britain by Bell & BainLimited. Scotland,1992:186.
10Bosco,C.. Physiological considerations of strength and explosive power and jumping drills(plyometric exercise) [M]. In Proceedings of Conference' 82:Pl anning forElite Performance. Canadian TraCk and FieldAssociation. Ottawa. 1-5August. 1982:27-37.