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Table 5 Joint of basal with resting hormone levels of athletes induced for NFOR/FOR by overload training

From: Hormonal aspects of overtraining syndrome: a systematic review

Hormone

Quantity of studies (% of total basal and resting levels)

Normal levels (%)

Reduced levels (%)

Increased levels (%)

Cortisol

22 (53.7%)

16 (72.7%)

5 (22.7%)

1 (4.6%)

Total T

17 (41.5%)

11 (64.7%)

5 (29.4%)

1 (5.9%)

T/C ratio

12 (29.3%)

6 (50.0%)

5 (41.7%)

1 (8.3%)

ACTH

10 (24.4%)

8 (80.0%)

-

2 (20.0%)

GH

9 (21.9%)

5 (55.6%)

2 (22.2%)

2 (22.2%)

NUC

8 (19.5%)

4 (50.0%)

2 (25.0%)

2 (25.0%)

Plasma Catecholamines

8 (19.5%)

5 (62.5%)

2 (25.0%)

1 (12.5%)

IGF-1

6 (14.6%)

5 (83.3%)

1 (16.7%)

-

Insulin

6 (14.6%)

5 (83.3%)

1 (16.7%)

-

LH

5 (12.2%)

4 (80.0%)

1 (20.0%)

-

FSH

4 (9.8%)

3 (75.0%)

1 (25.0%)

-

Free T

4 (9.8%)

2 (100%)

1 (25.0%)

1 (25.0%)

Aldosterone

4 (9.8%)

2 (50.0%)

1 (25.0%)

1 (25.0%)

Prolactin

4 (9.8%)

4 (100%)

-

-

TSH

2 (4.9%)

2 (100%)

-

-

T4

2 (4.9%)

2 (100%)

-

-

T3

2 (4.9%)

2 (100%)

-

-

SHBG

2 (4.9%)

1 (50.0%)

-

1 (50.0%)

IGFBP-3

2 (4.9%)

1 (50.0%)

1 (50.0%)

-

IGF-1/IGFBP-3

2 (4.9%)

1 (50.0%)

-

1 (50.0%)

Peptide F

2 (4.9%)

2 (100%)

-

-

Salivary C

2 (4.9%)

-

2 (100%)

-

Salivary T

2 (4.9%)

1 (50.0%)

1 (50.0%)

-

T/SHBG

1

1

-

-

4 PM salivary C

1

-

-

1

Fertility

1

-

1

-

Beta-2 muscle receptors

1

-

1

-

  1. NUC Nocturnal urinary catecholamines, T/C testosterone/cortisol ratio, T/SHBG testosterone/sex hormone binding globulin, T3 thyronine, T4 thyroxine, salivary C salivary cortisol, salivary T salivary testosterone, 4 PM salivary C salivary cortisol collcted at 4 PM, IGF-1/IGFBP-3 IGF-1/IGFBP3 ratio, fertility evaluation by semen analysis