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Abstract
This study examined whether during childhood, the parameters for the range of motion had more influence on vertical jump height than parameters for application of force. Counter-movement jumps performed by 36 girls aged between 5 and 8 years and 20 adult females were examined using force platform analysis. Multiple regression analysis of the data indicated that the parameters for the range of motion had more influence on jump height than the parameters for application of force. This was demonstrated by standardised coefficients for range of motion which were higher than the standardised coefficients for application of force. Although this trend was observed in both groups, the influence of the range of motion was relatively greater in prepubescent girls than in adult females. The present results suggest that prepubescent girls increased their jump height by increasing the range of motion over which force is applied.