TABLE 3.
Correlations between studied variables in forty elite youth soccer players according to their maturity status (pre-PHV and post-PHV).
|
Whole Sample (N = 40) |
||||||||
|
IVI |
EVI |
KI |
||||||
| r (r2) | rz | r (r2) | rz | r (r2) | rz | μr (r2) | μrz | |
| CoD-15m | –0.41** (0.17) | 0.44 | –0.66** (0.43) | 0.78 | –0.47** (0.22) | 0.51 | –0.51 (0.27) | 0.58 |
| CoDBall-15 m | –0.30 (0.09) | 0.31 | –0.50** (0.25) | 0.55 | –0.68** (0.47) | 0.83 | –0.49 (0.27) | 0.56 |
| μr (r2) | –0.36 (0.13) | – | –0.58 (0.34) | – | –0.58 (0.35) | – | –0.50 (0.27) | – |
| μrz | – | 0.38 | – | 0.66 | – | 0.67 | – | 0.57 |
|
Pre-PHV (n = 20) |
||||||||
|
IVI |
EVI |
KI |
||||||
| r (r2) | rz | r (r2) | rz | r (r2) | rz | μr (r2) | μrz | |
| CoD-15m | –0.31 (0.10) | 0.32 | –0.29 (0.08) | 0.30 | –0.41 (0.17) | 0.44 | –0.34 (0.12) | 0.35 |
| CoDBall-15 m | –0.26 (0.07) | 0.27 | –0.07 (0.01) | 0.07 | –0.73** (0.53) | 0.93 | –0.35 (0.20) | 0.42 |
| μr (r2) | –0.29 (0.08) | – | –0.18 (0.04) | – | –0.57 (0.35) | – | –0.34 (0.16) | – |
| μrz | – | 0.30 | – | 0.18 | – | 0.69 | – | 0.38 |
|
Post-PHV (n = 20) |
||||||||
|
IVI |
EVI |
KI |
||||||
| r (r2) | rz | r (r2) | rz | r (r2) | rz | μr (r2) | μrz | |
| CoD-15m | –0.55* (0.31) | 0.62 | –0.62** (0.39) | 0.73 | –0.52* (0.27) | 0.58 | –0.56 (0.32) | 0.64 |
| CoDBall-15 m | –0.26 (0.02) | 0.27 | –0.55* (0.30) | 0.62 | –0.79** (0.63) | 1.07 | –0.53 (0.32) | 0.65 |
| μr (r2) | –0.41 (0.17) | – | –0.58 (0.34) | – | –0.66 (0.45) | – | –0.54 (0.32) | – |
| μrz | – | 0.45 | – | 0.68 | – | 0.83 | – | 0.65 |
–,not applicable; *p < 0.05; **p < 0.01; r, r-value; rz, rz-value;μ, Mean; r2, coefficient of determination which was calculated by squaring the r-value; IVI, internal visual imagery; EVI, external visual imagery; KI, kinesthetic imagery.