Table 2 Values of serum OS biomarkers in horses pre- and post-races by distance and difficulty

d-ROMs (U.Carr.)

Pre-race

164.8 ± 7.6

168.7 ± 9.9

166.2 ± 6.8

166.2 ± 8.2

Post-race

173.8 ± 8.6

174.2 ± 11.3

171.9 ± 7.8

172.3 ± 8.4

P

0.002

0.2

0.04

0.03

P^a

BAP (μmol/L)

Pre-race

2610.9 ± 33.2

2533.1 ± 30.5

2612.7 ± 32.2

2541.9 ± 32.2

Post-race

2820.4 ± 28.2

2840.4 ± 31.4

2817.5 ± 28.8

2840.5 ± 22.8

P

<  0.001

<  0.001

<  0.001

<  0.001

P^a

MDA (μmol/L)

Pre-race

5.1 ± 0.2

4.5 ± 0.1

4.7 ± 0.1

5.1 ± 0.3

Post-race

5.3 ± 0.2

4.7 ± 0.2

5.1 ± 0.2

5.1 ± 0.3

P

0.1

0.02

0.003

0.7

P^a

OSI (arbitrary units)

Pre-race

6.3 ± 0.3

6.7 ± 0.4

6.4 ± 0.3

6.6 ± 0.3

Post-race

6.1 ± 0.3

6.2 ± 0.4

6.1 ± 0.3

6.1 ± 0.3

P

0.004

<  0.001

0.005

< 0.001

P^a