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Table 4 Multiple linear regression analysis: minutes of playing and all variables

From: The influence of maturation, fitness, and hormonal indices on minutes played in elite youth soccer players: a cross-sectional study

Variable Beta Estimate |t| P value 95% CI for estimated
MP (min) β0 − 904.3 0.77 0.455 − 3415 to 1607
Skeletal Age (years) β1 20.17 0.43 0.676 − 80.63 to 121.0
Maturity offset (years) β2 − 160.6 1.40 0.181 − 404.7 to 83.59
Soccer training (months) β3 − 1.9 1.09 0.292 − 5.806 to 1.870
V̇O2 max (ml kg−1 min−1) β4 42.8 2.72 0.016 9.324 to 76.35
Fatigue index (seconds) β5 40.3 0.28 0.780 − 262.2 to 342.8
CMJ (cm) β6 − 1.2 0.12 0.907 − 22.55 to 20.17
GH (ng/dl) β7 37.9 2.32 0.035 3.034 to 72.78
IGF1 (ng/dl) β8 0.7 1.81 0.091 − 0.1250 to 1.519
     R2 = 0.76  
  1. Significant differences (p ≤ 0.05) are highlighted in bold. MP (minutes of playing); CMJ (countermovement jumps)
  2. MP = minutes of playing; V̇O2max = maximal oxygen consumption; CMJ = countermovement jump; GH = growth hormone; IGF1 = insulin-like growth factor; CI = confidence interval