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Table 2 Descriptive characteristics of players

From: Associations between match participation, maturation, physical fitness, and hormonal levels in elite male soccer player U15: a prospective study with observational cohort

Variables

Mean ± SD

Height (cm)

172.4 ± 7.5

Weight (kg)

59.4 ± 10.1

Chronological age (years)

14.6 ± 0.2

Skeletal age (years)

15.0 ± 1.0

Maturity Offsets (years)

1.1 ± 0.5

Soccer training (months)

80.3 ± 23.0

VO2max (ml.kg−1.min−1)

48.7 ± 2.9

Fatigue index (seconds)

0.6 ± 0.3

Best sprints (seconds)

6.6 ± 0.4

Worst sprints (seconds)

7.1 ± 0.3

CMJ (cm)

39.5 ± 5.98

GH (ng/dl)

1.9 ± 1.4

IGF1 (ng/dl)

461.5 ± 110.6

Minutes of playing (min)

1411 ± 242.6

  1. * VO2max maximal oxygen consumption, CMJ countermovement jump, GH growth hormone, IGF1 insulin-like growth factor