Table 3.
Pre-exercise sex hormone concentrations
| Early Follicular |
Late Follicular |
Mid-Luteal |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estradiol, ng/mL | Progesterone, ng/mL | E2/P4 Ratio | Testosterone, ng/mL | Estradiol, ng/mL | Progesterone, ng/mL | E2/P4 Ratio | Testosterone, ng/mL | Estradiol, ng/mL | Progesterone, ng/mL | E2/P4 Ratio | Testosterone, ng/mL | |
| 1 | 36.1 | 0.4 | 90.4 | 1.3 | 104.7 | 0.4 | 259.3 | 1.3 | 86.1 | 4.4 | 19.7 | 1.2 |
| 2 | 72.7 | 0.4 | 190.8 | 0.9 | 161.6 | 0.4 | 405.1 | 0.8 | 148.6 | 9.0 | 16.6 | 1.1 |
| 3 | 75.7 | 0.3 | 280.3 | 1.7 | 65.8 | 0.2 | 307.4 | 1.8 | 91.5 | 0.5 | 183.4 | 1.8 |
| 4 | 67.2 | 0.6 | 111.0 | 1.5 | 107.7 | 0.5 | 215.8 | 1.5 | 137.0 | 6.4 | 21.3 | 1.6 |
| 5 | 58.5 | 0.5 | 107.7 | 1.3 | 100.9 | 0.5 | 220.3 | 1.4 | 146.5 | 7.7 | 19.0 | 1.3 |
| 6 | 84.4 | 0.2 | 449.0 | 1.4 | 224.8 | 0.4 | 642.2 | 2.1 | 137.0 | 9.0 | 15.2 | 2.2 |
| 7 | 74.9 | 0.4 | 184.1 | 1.9 | 79.0 | 0.2 | 389.3 | 1.6 | 128.3 | 0.3 | 403.6 | 2.0 |
| 8 | 49.9 | 0.3 | 154.3 | 1.2 | 100.3 | 0.5 | 200.9 | 1.2 | 95.7 | 4.4 | 21.8 | 1.0 |
| 9 | 87.5 | 0.5 | 174.2 | 1.7 | 95.1 | 0.5 | 196.4 | 1.8 | 143.5 | 12.7 | 11.3 | 1.8 |
| 10 | 58.9 | 1.9 | 31.1 | 1.2 | 105.4 | 10.7 | 9.9 | 1.5 | 106.4 | 11.9 | 8.9 | 1.3 |
| 11 | ||||||||||||
| 12 | 50.0 | 0.4 | 126.4 | 1.5 | 77.7 | 0.7 | 114.5 | 1.7 | 64.4 | 6.5 | 9.9 | 1.5 |
| Mean | 65.1 | 0.6# | 172.7 | 1.4 | 111.2* | 1.4# | 269.2 | 1.5 | 116.8* | 6.6 | 66.4 | 1.5 |
| SD | 15.9 | 0.5 | 112.1 | 0.3 | 45.0 | 3.1 | 167.3 | 0.4 | 29.1 | 4.1 | 122.7 | 0.4 |
| % BF | 31.6 ± 6.0 | 29.9 ± 5.1 | 31.6 ± 5.9 | |||||||||
All data are n = 12 except hormone levels due to nonphysiological hormone levels in one participant. E2/P4 Ratio = estradiol/progesterone ratio; % BF = percentage of body fat. Analyzed by one-way linear mixed model. *Significantly different from the EF phase (P ≤ 0.012). #Significantly different from the mid-luteal (ML) phase (P ≤ 0.002). Bold text (participant 10) highlights one woman where the peak increase in estradiol concentrations was likely missed in the late follicular (LF) phase. Italicized text (participants 3 and 7) highlights two women where the progesterone concentrations did not reach the expected absolute levels in the LF and ML phases.