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Improving the Muscle Strength of The Lower Limbs in Junior Tennis

Table 1: Results of the initial – final test and the dynamics of the evolution of the JUMP ON TWO LEGS test – 15 SEC. – JUMPS

Indicatorii statistici Tcont (s) Tflight (s) Height (cm) Power (w/kg) Pace (step/s)
TI TF TI TF TI TF TI TF TI TF
Min 0,153 0,221 0,319 0,331 11,7 13,5 11,84 16,6 1,07 1,4
Max 0,336 0,619 0,45 0,462 20,8 26,3 33,76 49,64 1,64 1,68
X 0,253 0,318 0,367 0,399 17,066 19,855 21,211 27,008 1,465 1,567
S 0,052 0,019 0,044 0,047 4,100 4,696 6,451 10,152 0,172 0,094
CV 20,553% 5,974% 11,989% 11,779% 24,024% 23,651% 30,413% 37,588% 11,740% 5,998%
The difference in averages 0,065 0,032 2,789 5,797 0,102
Value of „t" 3,532 2,509 2,382 2,448 2,613
The value of "t" in Fisher's table 3,499 2,365 2,365 2,365 2,365
Significance threshold Significance <0,01 Significance <0,05 Significance <0,05 Significance <0,05 Significance <0,05
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