Table 1 Changes of body weight and blood biochemical indexes before- and after-marathon

Body weight (kg)

61.17 ± 8.27

60.69 ± 8.28

P > 0.05

Creatine kinase (IU)

352.39 ± 159.23

543.22 ± 284.16

P < 0.01

Isoenzyme (CK-MB) (IU)

20.33 ± 5.30

27.89 ± 7.77

P < 0.05

Urea (mmol/L)

4.94 ± 0.84

6.71 ± 1.12

P < 0.05

C-reactive protein (mg/L)

0.61 ± 0.21

0.78 ± 0.28

P < 0.05

Homocysteine (μmol/L)

14.96 ± 3.45

18.18 ± 9.19

P > 0.05

Testosterone (nmol/L)

14.81 ± 4.95

7.36 ± 4.08

P < 0.01

Cortisol (nmol/L)

411.56 ± 108.27

773.50 ± 92.01

P < 0.01