Table 2.
Baseline Characteristics of Oligoamenorrheic Athletes
| NONE (n = 26) | PILL (n = 21) | PATCH (n = 26) | P Value | PILL vs NONE | PATCH vs NONE | PATCH vs PILL | |
|---|---|---|---|---|---|---|---|
| Clinical characteristics | |||||||
| Age (y) | 19.0 ± 0.5 | 20.5 ± 0.6 | 19.8 ± 0.6 | 0.189 | 0.186 | 0.411 | 0.906 |
| BMI (kg/m2) | 20.7 ± 0.3 | 20.6 ± 0.4 | 19.9 ± 0.4 | 0.285 | 0.960 | 0.291 | 0.459 |
| Percent of median BMI for age | 97.5 ± 1.5 | 98.7 ± 2.0 | 93.4 ± 1.6 | 0.106 | 0.967 | 0.191 | 0.132 |
| Hours/week exercise in past year | 9.3 (5.9–12.1) | 10.8 (6.9–17.0) | 8.2 (6.2–11.0) | 0.443 | 0.611 | 0.995 | 0.435 |
| Daily caloric intake (Cals) | 1883.0 (1575.2–2820.0) | 2041.0 (1688.8–2627.5) | 2274.0 (1793.5–2716.0) | 0.557 | 0.957 | 0.576 | 0.723 |
| Resting energy expenditure (Cals) | 1194.0 (1100.5–1321.0) | 1160.0 (1074.0–1326.5) | 1174.0 (1049.0–1248.0) | 0.857 | 0.999 | 0.845 | 0.931 |
| Percent body fat | 25.4 ± 0.7 | 25.3 ± 1.2 | 23.5 ± 0.8 | 0.237 | 0.911 | 0.176 | 0.622 |
| Lean body mass (kg) | 35.3 (38.0–42.9) | 38.7 (37.8–42.4) | 40.1 (36.3–45.3) | 0.903 | 0.942 | 0.844 | 0.985 |
| Biochemical parameters | |||||||
| 25(OH)D (ng/mL) | 33.8 (29.5–42.4) | 33.7 (31.3–50.5) | 36.7 (27.7–46.3) | 0.716 | 0.766 | 0.490 | 0.373 |
| Calcium (mg/dL) | 9.4 ± 0.1 | 9.4 ± 0.1 | 9.3 ± 0.1 | 0.230 | 0.337 | 0.440 | 0.376 |
| PTH (pg/mL) | 25.0 (22.5–36.8) | 26.0 (22.0 – 38.0) | 29.0 (22.0–36.0) | 0.938 | 0.995 | 0.957 | 0.949 |
| P1NP (ng/mL) | 93.5 (72.1–121.9) | 59.0 (52.5–97.5) | 72.5 (59.5–101.8) | 0.096 | 0.116 | 0.601 | 0.309 |
| NTX (nM BCE/L) | 14.9 (12.6–18.3) | 12.4 (10.3–19.0) | 16.3 (13.2–19.6) | 0.139 | 0.343 | 0.522 | 0.203 |
| IGF-1 (ng/mL) | 254.0 (191.5–332.0) | 208.0 (172.3–292.0) | 225.0 (176.0–287.0) | 0.252 | 0.291 | 0.437 | 0.874 |
| IGF-1 z score | −0.38 ± 0.12 | −0.42 ± 0.15 | −0.64 ± 0.17 | 0.452 | 0.981 | 0.461 | 0.596 |
| IGFBP-3 (ng/mL) | 4936.8 ± 120.6 | 4723.0 ± 215.7 | 5050.5 ± 191.1 | 0.306 | 0.312 | 0.934 | 0.457 |
| IGF-1/IGFBP-3 | 0.0535 ± 0.0033 | 0.0474 ± 0.0030 | 0.0475 ± 0.0031 | 0.309 | 0.408 | 0.371 | 0.999 |
| Testosterone (ng/dL) | 28.5 (17.0–40.3) | 30.0 (23.0–39.0) | 24.0 (17.0–35.0) | 0.369 | 0.930 | 0.500 | 0.431 |
| Estradiol (pg/mL) | 39.8 (26.0–56.8) | 31.0 (14.7–86.5) | 22.0 (11.2–32.0) | 0.201 | 0.618 | 0.144 | 0.816 |
| SHBG (nmol/L) | 55.0 (35.5–71.5) | 61.7 (48.1–75.3) | 54.5 (37.3–79.9) | 0.862 | 0.888 | 0.948 | 0.934 |
| FAI | 1.8 (1.0–3.5) | 1.8 (1.4–2.5) | 1.5 (0.9–2.6) | 0.422 | 0.846 | 0.737 | 0.395 |
| Sclerostin (pg/mL) | 111.0 ± 11.6 | 121.1 ± 10.4 | 136.2 ± 10.9 | 0.285 | 0.816 | 0.256 | 0.636 |
| Pref-1 (pg/mL) | 84.0 (34.7–136.7) | 113.4 (59.5–242.5) | 106.6 (77.4–151.8) | 0.385 | 0.645 | 0.355 | 0.996 |
| BDNF (ng/mL) | 21.39 (18.90–24.74) | 22.65 (17.74–26.00) | 22.66 (16.37–30.69) | 0.852 | 0.918 | 0.934 | 0.847 |
Mean ± SEM; median (first quartile to third quartile).