Influence of racing on the serum concentrations of the cardiac biomarkers troponin I and creatine kinase myocardial band (CK-MB) in racing greyhounds

Abstract

The objective of this study was to investigate the effect of racing on the serum concentrations of cardiac troponin I (cTnI) and creatine kinase myocardial band (CK-MB) in 32 racing greyhounds. Blood samples were collected 24. h prior to a 7. km race (T0), within 2. h of completion of the race (T1), and 24. h post-race (T2). Blood samples were also collected from 20 non-racing greyhounds. The median cTnI concentration in the racing greyhounds was not significantly different from that in the non-racing greyhounds (0.045. ng/mL).Before racing, the median cTnI concentration in the racing greyhounds was 0.050. ng/mL. Following the 7. km race, 31/32 greyhounds showed increases in cTnI concentrations which were significantly higher than the pre-race concentrations ( P