Análise dos biomarcadores sanguíneos em cavalos de salto de obstáculos após o treino utilizando a passadeira aquática
A carregar...
Data
Autores
Título da revista
ISSN da revista
Título do volume
Editora
Resumo
As passadeiras aquáticas são usadas em programas de reabilitação e treino de equinos, com sua indicação sendo atribuída as características de flutuabilidade, viscosidade e pressão da água. Entretanto, o estabelecimento de um protocolo de treino ideal usando esse equipamento ainda carece de investigação visto que as respostas fisiológicas variam com altura da água, velocidade e duração do exercício e frequência do treino. Pretendeu-se estudar os efeitos do treino na passadeira aquática sobre biomarcadores sanguíneos de equinos de salto de obstáculos. Para tal, seis equinos, treinados, ~16 anos de idade e ~578kg foram avaliados antes (PRETR) e depois (TR) de um programa de treino de 10 semanas que incluiu a passadeira aquática (20min, 60-80% da FCpico, 2x/semana, água ao nível do carpo) a uma sequência conhecida de exercícios. O grupo de animais serviu como seu próprio controle, pois já realizava atividade física há mais de 6 meses. Em PRETR e TR, os animais foram examinados através de testes de campo de salto de obstáculos quando foram obtidas amostras de sangue antes e sequencialmente após o exercício. Foram determinados hemograma, lactato, glicose, NEFA, cortisol e proteínas totais. Os dados foram analisados usando teste de Tukey e teste-t pareado (p 0,05). Foram observados aumentos significativos de glicose, NEFA e cortisol após o treino, além de alterações significativas do hemograma (aumento da contagem total de leucócitos e diferencial de neutrófilos e de volume globular e VCM; e redução do CHCM). Os achados sugerem uma melhoria da aptidão física dos equinos usados pois sinalizam um metabolismo energético mais eficiente com maior mobilização de gordura e uma hipohemoglobinemia compatível com treino de carga incremental. A resposta do cortisol sérico pode estar relacionada com a eficiência energética (aumentando lipólise e gliconeogénese); entretanto, pode sinalizar stress agudo devido ao uso da passadeira aquática.
Water treadmills are used in equine rehabilitation and training programs, with their indication being attributed to the characteristics of buoyancy, viscosity and water pressure. However, the establishment of an ideal training protocol using this equipment still requires investigation as physiological responses vary with water height, speed and duration of exercise and training frequency. The aim was to study the effects of training on the water treadmill on blood biomarkers in show jumping horses. To this end, six trained horses, ~16 years old and ~578kg, were evaluated before (PRETR) and after (TR) a 10-week training program that included the water treadmill (20min, 60-80% of HRpeak, 2x/week, water at carpal level) to a known sequence of exercises. The group of animals served as their own control, as they had already been performing physical activity for more than 6 months. In PRETR and TR, animals were examined through obstacle jumping field tests when blood samples were obtained before and sequentially after exercise. CBC, lactate, glucose, NEFA, cortisol and total proteins were determined. Data were analyzed using Tukey’s test and paired t-test (p0.05). Significant increases in glucose, NEFA and cortisol were observed after training, in addition to significant changes in the blood count (increase in total leukocyte count and neutrophil differential and globular volume and MCV; and reduction in MCHC). The findings suggest an improvement in the physical fitness of the horses used as they indicate a more efficient energy metabolism with greater fat mobilization and hypohemoglobinemia compatible with incremental load training. The serum cortisol response may be related to energy efficiency (increasing lipolysis and gluconeogenesis); however, it may signal acute stress due to the use of the water treadmill.
Water treadmills are used in equine rehabilitation and training programs, with their indication being attributed to the characteristics of buoyancy, viscosity and water pressure. However, the establishment of an ideal training protocol using this equipment still requires investigation as physiological responses vary with water height, speed and duration of exercise and training frequency. The aim was to study the effects of training on the water treadmill on blood biomarkers in show jumping horses. To this end, six trained horses, ~16 years old and ~578kg, were evaluated before (PRETR) and after (TR) a 10-week training program that included the water treadmill (20min, 60-80% of HRpeak, 2x/week, water at carpal level) to a known sequence of exercises. The group of animals served as their own control, as they had already been performing physical activity for more than 6 months. In PRETR and TR, animals were examined through obstacle jumping field tests when blood samples were obtained before and sequentially after exercise. CBC, lactate, glucose, NEFA, cortisol and total proteins were determined. Data were analyzed using Tukey’s test and paired t-test (p0.05). Significant increases in glucose, NEFA and cortisol were observed after training, in addition to significant changes in the blood count (increase in total leukocyte count and neutrophil differential and globular volume and MCV; and reduction in MCHC). The findings suggest an improvement in the physical fitness of the horses used as they indicate a more efficient energy metabolism with greater fat mobilization and hypohemoglobinemia compatible with incremental load training. The serum cortisol response may be related to energy efficiency (increasing lipolysis and gluconeogenesis); however, it may signal acute stress due to the use of the water treadmill.