Efeitos de diferentes programas de treinamento na frequência cardíaca de potros da raça mangalarga marchador
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Abstract
Physical exercise plays a fundamental role in the development and conditioning of equine athletes, especially during the youth phase, a period characterized by intense physiological adaptations. In this context, heart rate is a widely used variable for evaluating the cardiovascular response to exercise. This study aimed to evaluate the effect of different exercise programs on the heart rate dynamics of young foals over a 56-day experimental period. The animals were divided into four treatments according to their weekly exercise frequency and evaluated at baseline (D0), intermediate (D28), and final (D56) times. Cardiorespiratory capacity was assessed using a standard exercise test, and heart rate measurements were taken at rest (baseline) and during four phases of exercise: walk, slow walk, fast walk, and cool-down. Data were subjected to analysis of variance, and means were compared using Tukey's test, adopting a significance level of 5%. The results demonstrated no significant effect of treatments or experimental time on heart rate in all conditions evaluated (p > 0.05). It is concluded that, under the experimental conditions adopted, the weekly exercise frequencies were not sufficient to promote measurable cardiovascular adaptations, indicating that the intensity, volume, and progression of the stimulus are determinants for inducing physiological responses in young horses.
