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Secular changes in anaerobic fitness test performance in healthy 6- to 17-year-old Australasians were examined by meta-analysis of 232,564 power- and speed-test performances between 1960 and 2002. Overall, power-test performance improved at a rate of +0.05% [95% confidence interval (CI) = +0.01% to +0.09%] per annum, and speed at +0.04% (CI = +0.02% to +0.06%) per annum. Results indicate that anaerobic-fitness-test performances have remained relatively stable in Australasian children and adolescents in recent decades.
Tomkinson and Olds are with the Centre for Applied Anthropometry, School of Health Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide SA 5001, Australia; Hamlin is with the Social Sciences Tourism & Recreation Group, Lincoln University, GPO Box 84, Canterbury 8150, New Zealand.