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Table 4 Values of serum OS biomarkers in horses pre- and post-races by separate race events

From: Effect of prolonged submaximal exercise on serum oxidative stress biomarkers (d-ROMs, MDA, BAP) and oxidative stress index in endurance horses

Parameter (unit) First race Second race Third race Fourth race
40 km (n = 12) 80 km (n = 7) 40 km (n = 2) 80 km (n = 3) 40 km (n = 8) 80 km (n = 8) 40 km (n = 8) 80 km (n = 5)
d-ROMs
(U.Carr.)
Pre-race 160.9 ± 11.8 172.7 ± 16.8 163.8 ± 13.5 184.9 ± 27.4 162.7 ± 9.2 163.3 ± 17.5 174.9 ± 6.2 157.2 ± 12.1
Post-race 176.0 ± 13.2 175.6 ± 20.2 161.7 ± 0.7 184.2 ± 22.0 169.1 ± 8.9 173.8 ± 19.7 173.0 ± 8.2 156.7 ± 14.7
P < 0.001 0.7 0.9 0.9 0.06 0.07 0.7 0.9
Pa 0.07 0.9 0.5 0.9
BAP (μmol/L) Pre-race 2575.8 ± 51.6 2628.6 ± 71.9 2820.0 ± 40.0 2573.3 ± 53.6 2556.3 ± 52.6 2446.3 ± 21.5 2692.5 ± 34.3 2516.0 ± 53.5
Post-race 2806.7 ± 49.0 2837.1 ± 90.3 2905.0 ± 155.0 2883.3 ± 69.4 2812.5 ± 33.6 2836.3 ± 32.3 2818.8 ± 29.3 2826.0 ± 65.7
P < 0.001 0.04 0.7 0.06 < 0.001 < 0.001 < 0.01 < 0.01
Pa 0.8 0.3 0.03 0.02
MDA
(μmol/L)
Pre-race 4.9 ± 0.2 4.5 ± 0.2 8.2 ± 1.9 3.8 ± 0.2 5.2 ± 0.2 4.6 ± 0.1 4.8 ± 0.1 4.3 ± 0.2
Post-race 4.9 ± 0.2 4.9 ± 0.3 7.8 ± 0.7 3.5 ± 0.1 5.3 ± 0.2 4.8 ± 0.2 5.7 ± 0.4 5.2 ± 0.3
P 0.8 0.2 0.8 0.08 0.5 0.5 0.08 0.02
Pa 0.3 0.9 0.9 0.9
OSI
(arbitraryunits)
Pre-race 6.2 ± 0.4 6.7 ± 0.8 5.8 ± 0.4 7.1 ± 0.9 6.4 ± 0.4 6.7 ± 0.7 6.5 ± 0.3 6.2 ± 0.4
Post-race 6.2 ± 0.4 6.3 ± 0.9 5.6 ± 0.3 6.4 ± 0.7 6.0 ± 0.3 6.1 ± 0.6 6.1 ± 0.3 5.5 ± 0.5
P 0.9 0.07 0.2 0.07 0.08 0.02 0.01 0.2
Pa 0.05 0.1 0.4 0.4
  1. d-ROMs determination of reactive oxidative metabolites, BAP biological antioxidant potential, MDA malondialdehyde, OSI oxidative stress index
  2. P-significance for the differences within each category division (e.g. change in pre-race and post-race values)
  3. Pa-significance for the difference between the two categories (e.g. change in values at 40 km vs. 80 km)