Table 3. Hormonal Concentrations (GH, IGF-1 and IGFBP3) of soccer players and control subjects determined during two-soccer seasons (mean ± SD).
|
Measurements |
Soccer players (n = 18) |
Controls (n = 18) |
P Values |
∆ |
GH (nmol/L) |
T0 |
1.69 ± 0.44 |
1.19 ± 0.90 |
0.01 |
0.50* |
T1 |
2.07 ± 0.48 |
1.15 ± 0.62 |
0.01 |
0.92* |
T2 |
2.62 ± 0.41 |
1.39 ± 0.67 |
0.001 |
1.23** |
T3 |
2.70 ± 0.43 |
1.25 ± 0.55 |
0.001 |
1.45** |
T4 |
2.02 ± 0.47 |
1.05 ± 0.58 |
0.01 |
0.97* |
IGF-1 (nmol/L) |
T0 |
765.35 ± 62.71 |
455.95 ± 71.29 |
0.001 |
309.4** |
T1 |
847.95 ± 38.02 |
515.70 ± 61.56 |
0.001 |
332.25** |
T2 |
914.20 ± 34.68 |
523.75 ± 58.87 |
0.001 |
390.45** |
T3 |
970.60 ± 34.45 |
552.90 ± 80.91 |
0.001 |
417.7** |
T4 |
851.65 ± 43.97 |
396.55 ± 95.78 |
0.001 |
455.10** |
IGFBP-3 (nmol/L) |
T0 |
45.75 ± 5.36 |
38.11 ± 3.09 |
0.001 |
7.64** |
T1 |
49.35 ± 4.52 |
41.70 ± 2.12 |
0.001 |
7.65** |
T2 |
51.30 ± 3.77 |
42.15 ± 3.24 |
0.001 |
9.15** |
T3 |
55.70 ± 5.84 |
43.45 ± 4.55 |
0.001 |
12.25** |
T4 |
57.55 ± 5.86 |
42.00 ± 5.54 |
0.001 |
15.55** |
IGF-1/IGFBP3 |
T0 |
16.72 ± 3.29 |
11.96 ± 3.64 |
0.001 |
4.76** |
T1 |
17.18 ± 3.64 |
12.36 ± 3.12 |
0.001 |
4.82** |
T2 |
17.82 ± 3.68 |
12.42 ± 2.96 |
0.001 |
5.4** |
T3 |
17.42 ± 3.22 |
12.72 ± 2.58 |
0.001 |
4.7** |
T4 |
14.79 ± 2.82 |
9.44 ± 2.75 |
0.001 |
5.35** |
GH, growth hormone; IGF-1, insulin-like growth factor-1, IGFBP3, insulin-like growth factor binding protein-3; T0: first test; T1: second test; T2: third test; T3: fourth test; T4: fifth test. Significant differences between soccer players and control subjects* p < 0.01** p < 0.001