Physiological parameters for dogs trained in treadmill / Parâmetros fisiológicos de cães submetidos a treinamento em esteira

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Lack of physical activity and highly caloric food have deeply affected canine health, leading them to develop many kinds of diseases related to the heart, obesity, joints and even behavior. In this way, preventive and curative steps such as physical activities and canine sports have been taken in order to guarantee that the dogs have a long and healthful life. However, for those steps to be taken, it is essential that the animals have a good physical conditioning, which can be determined by many different physiological parameters. The present work had as objective to evaluate the physiological parameters for dogs trained in a treadmill. Eight animals of different breeds, fed with the same commercial ration and lodged in individual kennels, were used. After clinical evaluation, the dogs rested 30 days. On the 19th day, the animals went through an evaluation of the following physiological parameters: cardiac frequency (CF), respiratory frequency (RF), body temperature (BT), lactate and sanguineous glucose. After that period, they were submitted to a test of gradual load in a treadmill, to measure the parameters in the maximum effort, returning to the point of rest, which was called recovery time. Using these data, the dogs inferior and superior limits of the CF as well as the intensity of the training were determined. The animals were divided in groups 1 and 2, which trained five and three times a week, respectively, in alternated days for five weeks. After that, they were, once again, submitted to the test of gradual load to measure the values of the physiological parameters. Among the dogs of the first group, it was observed a reduction of the CF (P<0.05), during the test of maximum effort, since the higher estimative of 214 bpm dropped to 205.33 bpm. These results suggest that there was an improvement in the cardiovascular conditioning for this group. For the animals of group 1, the CF at rest, after training, was lower compared to the period before the training, (P<0.05), going from 75 5.65 to 67 6.83 bpm. Comparing the before and after periods of exercises, the recovery of the CF was faster (P<0.05) for the dogs in group 2. The training five days a week offered a reduction (P<0.05) in the sanguineous lactate concentration at the same training speed, before and after training, suggesting a better physical conditioning. For the two groups, after training, it was observed significant alterations in the BT, remaining lower during all the test of progressive load. Concerning the RF and glucose, it was not observed significant differences in both groups. To sum up, the changes in the CF, BT and lactate indicate that there was an improvement in the physical conditioning of the dogs which trained five days a week, reason why this protocol is recommended.

ASSUNTO(S)

medicina veterinaria lactate cardiac frequency lactato frequência cardíaca cão condicionamento dog conditioning

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