Table 2. Pearson correlations between rankings, age, maturations, and physical fitness components by sex in junior elite tennis players (n = 92).
RankingU13 RankingU16 Age APHV Upper Body Power Lower Body Power Speed Agility
Boys Ranking U13 1
Ranking U16 -.113 1
Age -.203 .129 1
APHV .062 -.154 -.223 1
Upper Body Power -.500* .145 .183 -.424* 1
Lower Body Power .003 .011 .021 -.211 .361* 1
Speed .260 -.103 -.083 .372* -.522* -.576* 1
Agility .254 -.109 -.077 .115 -.307* -.342* .507* 1
Girls Ranking U13 1
Ranking U16 .142 1
Age -.020 .024 1
APHV .383* -.355* .136 1
Upper Body Power -.268 .075 .418* -.422* 1
Lower Body Power -.323* .048 .252 -.130 .428* 1
Speed .224 -.022 -.347* .268 -.411* -.640* 1
Agility .263 .133 -.403* .002 -.356* -.494* .649* 1
* Correlation is significant at the 0.05 level (2-tailed).