Desenvolvimento de teste para avaliação da aptidão aeróbia de beagles idosos
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Data
2021-12-03
Autores
Sgarbiero, Thais
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Assim como para humanos, o exercício físico regular em cães idosos pode ser uma ferramenta para reduzir efeitos deletérios induzidos pelo avanço da idade. Neste sentido, protocolos para avaliação da aptidão aeróbia de cães idosos se fazem necessários para o desenvolvimento de programa de exercício contínuo. A finalidade do estudo foi caracterizar possíveis diferenças fisiológicas entre cães adultos e idosos e verificar a efetividade do TCI como teste de aptidão aeróbia específico para cães idosos. Utilizaram-se 18 cães Beagles, sendo 9 cães adultos (A) e 9 cães idosos (I) para realização do teste. O TCI foi realizado em esteira ergométrica, utilizando velocidade constante (1,5 m/s) e incrementos de carga por meio da inclinação da esteira (7,5%) e acréscimo de pesos por meio de chumbos de pesca alocados em colete adaptado para cães nas porcentagens crescentes de 5, 10 e 15% da massa corpórea de cada cão. Aplicou-se teste t Student para avaliação intergrupo e ANOVA para amostras repetidas no tempo (p<0,05). O TCI promoveu aumento da lactatemia em I (1,62±0,55 mM) em relação a A (0,89±0,2 mM), assim como aumento na atividade sérica de CK e AST em A (568±605 e 41±23, respectivamente) em relação a I (183±98 e 27±7,5, respectivamente). O grupo I diferiu de A, após o TCI, também na temperatura superficial de Longissimus dorsi (33,2±0,9 e 34,7±1,1ºC, respectivamente), pH (A=7,42±0,03 e I=7,45±0,02) e pvCO2 (A= 36,0±2,4 e I=32,3±4,0mmHg). Na avaliação de turgor cutâneo, A diferiu de I antes do TCI (A=1,30±0,5 e I=1,99±0,6s) e no escore de percepção de esforço (A=1, sendo considerado esforço leve e I=2, sendo considerado esforço moderado). O TCI demonstrou ser de uso prático e seguro para avaliar aptidão aeróbia de cães idosos e apontou diferenças fisiológicas entre os grupos experimentais
– As for humans, regular exercise in elderly dogs can be a tool to reduce deleterious effects induced by aging. In this sense, protocols for evaluating the aerobic fitness of elderly dogs are necessary for the development of a continuous exercise program. The purpose of this study was to characterize possible physiological differences between adult and elderly dogs and verify the effectiveness of the ILT as a specific aerobic fitness test for elderly dogs. Eighteen Beagles dogs were used, 9 adult (A) and 9 elderly dogs (E) to perform the test. The ILT was performed on an ergometric treadmill, using constant speed (1.5 m/s) and load increments through the inclination of the treadmill (7.5%) and weight addition through lead load allocated in a vest adapted for dogs in the increasing percentages of 5, 10 and 15% of the body mass of each dog. Student's t test was applied for intergroup evaluation and ANOVA for samples repeated over time (p<0.05). The ILT promoted an increase in lactatemia in E (1.62±0.55 mM) in relation to A (0.89±0.2 mM) and an increase in the serum activity of CK and AST in A (568±605 and 41±23, respectively) compared to E (183±98 and 27±7.5, respectively). Group E differed from A also in the surface temperature of Longissimus dorsi (33.2±0.9 and 34.7±1.1, respectively), pH (A=7.42±0.03 and E=7, 45±0.02) and pvCO2 (A= 36.0±2.4 and E=32.3±4.0) after ILT, in the skin turgor test before ILT (A=1.30±0.5 and E=1.99±0.6) and on the perceived exertion score (A=1, being considered mild exertion and E=2, being considered moderate effort). ILT proved to be of practical and safe use to assess aerobic fitness of elderly dogs and showed physiological differences between the experimental groups.
– As for humans, regular exercise in elderly dogs can be a tool to reduce deleterious effects induced by aging. In this sense, protocols for evaluating the aerobic fitness of elderly dogs are necessary for the development of a continuous exercise program. The purpose of this study was to characterize possible physiological differences between adult and elderly dogs and verify the effectiveness of the ILT as a specific aerobic fitness test for elderly dogs. Eighteen Beagles dogs were used, 9 adult (A) and 9 elderly dogs (E) to perform the test. The ILT was performed on an ergometric treadmill, using constant speed (1.5 m/s) and load increments through the inclination of the treadmill (7.5%) and weight addition through lead load allocated in a vest adapted for dogs in the increasing percentages of 5, 10 and 15% of the body mass of each dog. Student's t test was applied for intergroup evaluation and ANOVA for samples repeated over time (p<0.05). The ILT promoted an increase in lactatemia in E (1.62±0.55 mM) in relation to A (0.89±0.2 mM) and an increase in the serum activity of CK and AST in A (568±605 and 41±23, respectively) compared to E (183±98 and 27±7.5, respectively). Group E differed from A also in the surface temperature of Longissimus dorsi (33.2±0.9 and 34.7±1.1, respectively), pH (A=7.42±0.03 and E=7, 45±0.02) and pvCO2 (A= 36.0±2.4 and E=32.3±4.0) after ILT, in the skin turgor test before ILT (A=1.30±0.5 and E=1.99±0.6) and on the perceived exertion score (A=1, being considered mild exertion and E=2, being considered moderate effort). ILT proved to be of practical and safe use to assess aerobic fitness of elderly dogs and showed physiological differences between the experimental groups.
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Palavras-chave
Fisiologia, Cães, Teste de Esforço