Secular Trends in the Performance of Children and Adolescents (1980–2000): An Analysis of 55 Studies of the 20m Shuttle Run Test in 11 Countries

Author: Tomkinson Grant R.  

Publisher: Adis International

ISSN: 0112-1642

Source: Sports Medicine, Vol.33, Iss.4, 2003-01, pp. : 285-300

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Abstract