Cães de busca, resgate e salvamento : uma abordagem sobre o condicionamento físico
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Data
2019-02-28
Autores
Feitosa, Caroline Sant' Anna
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Universidade Federal do Espírito Santo
Resumo
Military dogs are often subjected to strenuous activities that require high metabolic activity. Tracing the profile of the physiological adaptation of these animals to the exercise allows the trainer to work with greater safety, aswell as to adapt them according to the individual performance. However, to design an ideal physical training for these animals it is necessary to understand the changes that occur in the physiological parameters during the mode of developed activity. The aim of this study was to trace the cardiac troponin I (cTnI), lactate and glucose profile, as well as to monitor heart rate (HR) variations and to verify cardiac electrophysiological changes induced by exercise in dogs of the Military Fire Brigade of Espírito Santo (CBM-ES). To that end, five animals belonging to the K9 team of CBM-ES underwent 60-minute searchand rescue training in a forest area of approximately 50,000m². The target variables of this study were evaluated at different times. HR, glucose and lactate were assessed before, during and at various times after the activity, whereas ECG and cTnI were evaluated before and after exercise at different times. There was no significant difference in glucose values between the pre-exercise moment and the other evaluation times. Lactate increased significantly at the end of the exercise, and significant differences were also observed at thirty minutes and sixty minutes recovery. Troponin levels increased after physical activity and remained elevated for up to four hours post-activity. At twelve hours post-activity the cTnI levels began to decline, remaining with this behavior until twenty-four hours after the end of the exercise. Regarding HR, no significant difference was observed in the values compared to the basal HR of the animals. However, at the 60'EXERC time, a higher mean heart rate was observed, and at the time 15'RECUP values were close to the basal values. The electrocardiographic examination revealed an increase in P wave duration at all moments evaluated and a slight increase in QRS interval at moments PRÉ, 60'EXERC, 30'RECUP and 60'RECUP, as well as increase ofT wave at moments 60'EXERC, 15'RECUP and 60'RECUP. The results obtained in the present research indicate that the animals are adapted to the physical exercise in the intensity and duration in which it was practiced, as well as suffer atrial overload due to search, rescue and rescue training.
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Palavras-chave
Cardiac biomarkers , Exercise physiology , Serum biochemistry , Biomarcadores cardíacos , Bioquímica sérica , Fisiologia do exercicio