TABLE 1.
Descriptive characteristics for the 1st team and U18 team players, and average values (mean + SD).
| A | Age (years) | Height (cm) | Body mass (kg) | Body mass index | Fat percen-tage (%) | Lean mass (kg) | 30-m sprint (s) | CMJ (cm) | |
| Average | 19.6 (3.1) | 169.1 (4.9) | 64.5 (9.4) | 22.4 (2.8) | 24.3 (5.1) | 45.6 (5.5) | 4.67 (0.16) | 31.2 (3.3) | |
| First team | 21.7 (2.5) | 168.0 (5.3) | 64.2 (10.2) | 22.6 (2.7) | 23.3 (5.2) | 46.0 (6.4) | 4.63 (0.18) | 32.3 (3.4) | |
| U18 team | 16.9 (0.9) | 170.0 (3.9) | 64.8 (8.6) | 22.2 (3.1) | 25.8 (5.0) | 44.8 (6.4) | 4.74 (0.12) | 30.0 (2.8) | |
| p-value | 0.158 | 0.882 | 0.759 | 0.249 | 0.570 | 0.118 | 0.080 | ||
| Hedges’ g | -0.566 | -0.060 | 0.132 | -0.486 | 0.215 | -0.633 | 0.714 | ||
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| B | VO2max (ml/kg/min) | sMax (km/h) | LT2 VO2 (ml/kg/min) | LT2 speed (km/h) | LT1 VO2 (ml/kg/min) | LT1 speed (km/h) | F0 (N/kg) | V0 (m/s) | Pmax (W/kg) |
| Average | 45.8 (3.3) | 14.9 (1.1) | 40.6 (3.6) | 11.8 (0.9) | 33.8 (2.8) | 9.4 (0.8) | 30.8 (3.5) | 2.28 (0.26) | 17.5 (1.6) |
| First team | 46.0 (2.4) | 15.2 (1.1) | 40.5 (2.8) | 11.9 (0.8) | 33.6 (2.5) | 9.5 (0.7) | 31.5 (3.3) | 2.23 (0.26) | 17.7 (1.5) |
| U18 team | 45.6 (4.2) | 14.5 (1.1) | 40.9 (4.6) | 11.8 (1.1) | 34.1 (3.4) | 9.4 (1.1) | 30.0 (3.6) | 2.35 (0.24) | 17.4 (1.7) |
| p-value | 0.825 | 0.140 | 0.767 | 0.751 | 0.666 | 0.875 | 0.299 | 0.267 | 0.707 |
| Hedges’ g | 0.087 | 0.596 | -0.117 | 0.125 | -0.170 | 0.062 | 0.414 | -0.443 | 0.148 |
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| C | Econ60 (Nm/kg) | Eecc60 (Nm/kg) | Econ180 (Nm/kg) | Eecc180 (Nm/kg) | Fcon60 (Nm/kg) | Fecc60 (Nm/kg) | Fcon180 (Nm/kg) | Fecc180 (Nm/kg) | |
| Average | 2.7 (0.5) | 4.3 (0.7) | 1.9 (0.4) | 3.9 (0.8) | 1.3 (0.2) | 1.8 (0.4) | 1.0 (0.2) | 1.8 (0.3) | |
| First team | 2.9 (0.3) | 4.5 (0.8) | 2.1 (0.3) * | 4.2 (0.9) | 1.2 (0.2) | 1.7 (0.3) | 1.0 (0.2) | 1.7 (0.3) | |
| U18 team | 2.5 (0.6) | 4.0 (0.5) | 1.5 (0.3) * | 3.6 (0.4) | 1.4 (0.3) | 1.8 (0.4) | 1.1 (0.3) | 1.9 (0.3) | |
| p-value | 0.067 | 0.080 | < 0.001 | 0.054 | 0.257 | 0.606 | 0.370 | 0.277 | |
| Hedges’ g | 0.868 | 0.727 | 1.790 | 0.772 | -0.505 | -0.213 | -0.399 | -0.432 | |
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| D | Totaldistance (m) | Zone 1 distance (m) (0–7 km/h) | Zone 2 distance (m) (7–13 km/h) | Zone 3 distance (m) (13–19 km/h) | Zone 4 distance (m) (19–23 km/h) | Zone 5 distance (m) (> 23 km/h) | LIR distance (m) (< 13 km/h) | HIR distance (m) (13–19 km/h) | VHIR distance (m) (> 19 km/h) |
| Average | 9203 (882) | 3468 (291) | 3840 (620) | 1600 (405) | 238 (109) | 56 (60) | 7308 (485) | 1600 (405) | 295 (161) |
| First team | 9205 (871) | 3457 (298) | 3811 (528) | 1623 (436) | 248 (119) | 66 (72) | 7268 (489) | 1623 (436) | 315 (184) |
| U18 team | 9200 (938) | 3481 (295) | 3878 (746) | 1571 (380) | 226 (99) | 45 (40) | 7359 (499) | 1571 (380) | 271 (131) |
| p-value | 0.989 | 0.843 | 0.794 | 0.758 | 0.620 | 0.385 | 0.754 | 0.652 | 0.492 |
| Hedges’ g | 0.005 | -0.078 | -0.103 | 0.122 | 0.196 | 0.345 | -0.179 | 0.122 | 0.262 |
A = anthropometry, 30-meter sprint speed and countermovement jump height (CMJ), B = Maximal oxygen consumption (VO2max) and maximal speed during VO2max test (sMax), speeds at lactate thresholds 1 (LT1 speed) and 2 (LT2 speed). Oxygen consumption at lactate thresholds 1 (LT1 VO2), 2 (LT2 VO2) and force (F0), velocity (V0) and power (Pmax) outputs from loaded squat jumps. C = Body mass adjusted peak torques of knee extensors in concentric action with 60 degrees (Econ60) and 180 degrees (Econ180) per second and in eccentric action with 60 degrees (Eecc60) and 180 degrees (Eecc180) per second. Body mass adjusted peak torques of knee flexors in concentric action with 60 degrees (Fcon60) and 180 degrees (Fcon180) per second and in eccentric action with 60 degrees (Fecc60) and 180 degrees (Fecc180) per second. D = Distance covered in different speed zones in matches and combinations of speed zones: low-intensity running (LIR), high-intensity running (HIR) and very-high-intensity running (VHIR) used in later analysis.
= Statistically significant difference between groups, p < 0.05.