Determinação do limiar metabolico individual de lactato e estudo do stresse oxidativo em equinos de enduro
AUTOR(ES)
Fernando Jose Gondim Peixoto
DATA DE PUBLICAÇÃO
1999
RESUMO
Methodologies that can evaluate the individual athletic characteristic and follow the training induced adaptations, are very important to athletic horses. It?s difficult for horse?s coach and riders to explain the physiological horse responses whithout any technical support. First, we standarized the human LMS protocol (Tegtbur, et al. 1993) for endurace horses. This protocol determine the maximal speed in minimal blood lactate concentration, known as anerobic/anaerobic treshould. We concluded that this methodology can be easily used under field conditions, and is a good parameter to evaluate the physical conditioning in horses. Afterwards, we followed the oxidative stress levels in nine endurace horses during a three days race of 210 Km. Two biomarkers of oxidative attack were chosen. One was used to determine the lipid oxidation (thiobarbituric reactive species ? TBARS) and one was used to protein oxidation (carbonylated protein). Two enzimes of antioxidant system also had their activities measured (Catalase and Glutathione reductase). The successful horses showed a positive response to the competition stimulus. An increase of antioxidant enzyme activities and a steady state of biomarker levels of oxidative attack increased. These data support a direct relationship between the oxidative stress and poor athletic performance
ASSUNTO(S)
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000199198Documentos Relacionados
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