Aim of the study was to assess how physical exercise influenced Gluthatione Peroxidase (GPx) activity in trotter athletic horses. The experiment was carried out on October-November 2004, on a group of 7 trotters, aged 2-3 years, after the beginning of their training period. Each trotter was subject to a standard training (ST) (20 minutes): after a warm up of 3 laps horses went at a steady trot for two laps. Blood samples were taken just before beginning the ST (T1), soon after (T2), and after 60 (T3), 120 (T4), 180 (T5) and 240 minutes (T6) the end of the ST. Blood -endorphin, cortisol, PCV, SOD and GPx were determined. Data were statistically analysed using GLM and correlation analysis. Training induced significant increases (P<0,001) of cortisol, PCV and HR at T2 (P<0,05), with values returning to baseline within 1 hour after ST (T3). Plasma beta-endorphin concentrations showed a similar trend but differences were not significant. GPx activity also significantly (P<0,001) increased after the ST, but peak values were observed at T4 and values remained still elevated to T6. Non significant variations of GPx activities were recorded for age, sex, and individuals.
Glutathione peroxidase activity and its relationships with cortisol and oppioid responses to training in trotters.
BEGHELLI, Daniela;
2005-01-01
Abstract
Aim of the study was to assess how physical exercise influenced Gluthatione Peroxidase (GPx) activity in trotter athletic horses. The experiment was carried out on October-November 2004, on a group of 7 trotters, aged 2-3 years, after the beginning of their training period. Each trotter was subject to a standard training (ST) (20 minutes): after a warm up of 3 laps horses went at a steady trot for two laps. Blood samples were taken just before beginning the ST (T1), soon after (T2), and after 60 (T3), 120 (T4), 180 (T5) and 240 minutes (T6) the end of the ST. Blood -endorphin, cortisol, PCV, SOD and GPx were determined. Data were statistically analysed using GLM and correlation analysis. Training induced significant increases (P<0,001) of cortisol, PCV and HR at T2 (P<0,05), with values returning to baseline within 1 hour after ST (T3). Plasma beta-endorphin concentrations showed a similar trend but differences were not significant. GPx activity also significantly (P<0,001) increased after the ST, but peak values were observed at T4 and values remained still elevated to T6. Non significant variations of GPx activities were recorded for age, sex, and individuals.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
