Table 1: Kinetics of serum concentrations of IGF-I and IGFBP-3, observed in soccer players in the U-15 category (n = 11) at different moments of the competitive season.
Competitive Season |
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Initial |
Intermediate |
Final |
|
IGF-I (ng/mL) |
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Pre-training |
445.54 ± 91.1 |
459.9 ± 67.52* |
460.72 ± 94.65* |
Post-training |
455.09 ± 87.75 |
519 ± 115.39* |
428.72 ± 87.33* |
∆IGF-I |
9.54 ± 3.36 |
59.09 ± 95+ |
-32 ± 49 |
IGFBP-3 (ng/mL) |
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Pre-training |
4.46 ± 0.63 |
4.91 ± 1.04a |
4.6 ± 0.97a |
Post-training |
4.61 ± 0.79 |
5.53 ± 1.66b |
4.5 ± 0.79b |
∆IGFBP-3 |
0.14 ± 0.16 |
0.62 ± 0.65 |
-0.01 ± 0.17 |
GH (ng/mL) |
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Pre-training |
2.85 ± 2.94 |
4.29 ± 4.48 |
7.35 ± 7.36 |
Post-training |
1.75 ± 2.31 |
4.11 ± 6.15 |
2.5 ± 2.57 |
∆GH |
-1.1 ± 0.63 |
-0.18 ± 1.67 |
-4.85 ± 4.79 |
*Difference between moments Pre and Post - STS p ≤ 0.05
aDifference between moments intermediate - pre STS Vs. final - pre STS p = 0.03
bDifference between moments intermediate - post STS Vs. final - post STS p = 0.04
∆ = (post-training dosage - pre-training dosage).