Table 1.
Testosterone (T), 17β-estradiol (E2) levels and ratio T/E2 in rat serum and testis.
| C | E | F | FE | |
|---|---|---|---|---|
| Serum hormone levels | ||||
| Testosterone (ng/ml) | 3.8 ± 0.9 | 11.4 ± 1.9** | 0.9 ± 0.1*, a | 2.5 ± 0.5a, b |
| 17β-estradiol (pg/ml) | 7.3 ± 2.0 | 8.3 ± 2.5 | 4.5 ± 0.7 | 5.2 ± 0.41 |
| Ratio T/E2 | 0.52 ± 0.13 | 1.37 ± 0.28** | 0.20 ± 0.02*, a | 0.48 ± 0.11 a, b |
| Testis hormone levels | ||||
| Testosterone (ng/g tissue) | 20.9 ± 8.6 | 85.4 ± 12.3** | 3.0 ± 2.2*, a | 18.0 ± 8.9 a, b |
| 17β-estradiol (pg/g tissue) | 76.6 ± 13.0 | 91.5 ± 20.1 | 128.9 ± 16.1* | 106.7 ± 18.3 |
| Ratio T/E2 | 0.27 ± 0.11 | 0.93 ± 0.084** | 0.02 ± 0.01*, a | 0.17 ± 0.076 a, b |
*
P < 0.05 vs. C;
**
P < 0.01 vs. C;
a
P < 0.05 vs. E;
b
P < 0.05 vs. F. C, chow-fed; E, chow-fed submitted to exercise; F, food withdrawal; FE, food withdrawal submitted to exercise (N = 4).