Table 3: Comparison of gonadotropin, bone metabolism markers and bone quality markers in athlete and control groups.

Control

Athlete

p-value

Gonadotropin concentration

LH (mIU/ml)

6.4 ± 7.6

3.9 ± 3.3

0.281

FSH (mIU/ml)

4.3 ± 2.5

5.3 ± 2.5

0.217

Prolactin (ng/ml)

20.4 ± 16.4

8.6 ± 2.2

< 0.001

Estradiol (pg/ml)

80.5 ± 61.9

20.8 ± 10.5

< 0.001

Testosterone (ng/ml)

0.4 ± 0.1

0.4 ± 0.1

0.225

Menstrual status

Normal menstruation

26 (83.9%)

1 (6.3%)

P < 0.001

Irregular menstruation

5 (16.1%)

6 (37.4%)

Secondary amenorrhea

0 (0%)

7 (43.8%)

Primary amenorrhea

0 (0%)

2 (12.5%)

First menstruation (y.o.)

11.9 ± 1.2

14.8 ± 2.0

< 0.001

Gonadotropin values are presented as the mean ± standard deviation. Values in parentheses indicate the proportion (%) in each group. The concentrations of gonadotropin were compared using the Mann-Whitney U test. The proportions reporting menstrual disorders were compared using the chi-square test. A p-value < 0.05 was considered significant.
Abbreviations: LH: Luteinizing Hormone; FSH: Follicle Stimulating Hormone.