Table 3.
Changes in biochemical and hormonal response during a complete athletics season in 800 m high-level athletes.
| Biochemical and hormonal response | T1 | T2 | T3 | T4 | T5 |
|---|---|---|---|---|---|
| CK (U·L−1) | 234.1 ± 142.6 | 257.9 ± 101.6 | 202.0 ± 111.5 | ||
| PRL (ng·ml−1) | 11.1 ± 6.0 | 12.3 ± 6.0 | 12.5 ± 4.3 | ||
| GH (μg·L−1) | 0.75 ± 0.94 | 0.74 ± 1.66 | 0.56 ± 1.31 | ||
| IGF-1 (nmol·L−1) | 37.7 ± 12.5# | 36.4 ± 12.7 | 33.8 ± 3.2a | ||
| C (nmol·L−1) | 367.8 ± 98.5 | 322.8 ± 77.8 | 347.9 ± 88.6 | ||
| T (nmol·L−1) | 19.4 ± 4.4 | 18.3 ± 4.8 | 20.6 ± 6.7 |
a
P < 0.05 (respect to T1). Time effect:
#
P < 0.05. CK, creatin kinase; PRL, prolactin; GH, human growth hormone; IGF-1, insulin-like growth factor I; C, cortisol; T, testosterone.