Publications by authors named "S Massie"
Background: Workload associated with the high frequency Colombian Paso Fino gait has not been evaluated.
Objectives: To determine the oxygen consumption (V̇O), heart rate (HR), stride frequency: breathing ratio, and hematology associated with the Paso Fino gait, including whether exercise-induced pulmonary hemorrhage (EIPH) occurs.
Animals: Eleven Paso Fino horses.
Article Synopsis
- - Exercise-induced hypervolemia is a common occurrence in racehorses, but when the pressure difference across the blood-gas barrier exceeds a certain limit, it can lead to exercise-induced pulmonary hemorrhage (EIPH).
- - The study analyzed six thoroughbreds to see how changes in blood volume (BV) after blood depletion and reinfusion affected various pressures, including left ventricular (LV) and pulmonary arterial wedge (PAW) pressures, which in turn influenced the severity of EIPH.
- - Results indicated that while circulating blood volume significantly impacted EIPH severity and various pressures, exercise intensity did not have a major effect, suggesting a direct link between blood volume changes and the risk of EIPH in racehorses.
Background: Swimming has been used empirically for rehabilitation and conditioning of horses. However, due to challenges imposed by recording physiological parameters in water, the intensity of free swimming effort is unknown.
Objectives: Measure the physiological workload associated with untethered swimming in horses.
Background: Comparatively little is known regarding the initial cardiorespiratory response of young racehorses to training. The objectives were to compare physiological parameters before and after introductory training and determine whether young Thoroughbreds show endoscopic signs of exercise-induced pulmonary hemorrhage (EIPH). Ten Thoroughbreds (20-23 months) underwent 12-weeks of introductory training, including weekly speed sessions.
View Article and Find Full Text PDFArrhythmias are commonly reported in exercising horses, however due to regulatory constraints electrocardiograms (ECGs) are acquired during training but not competition, raising questions about the repeatability of findings. The aims were (1) compare training and competition arrhythmias and (2) describe the repeatability of arrhythmias during maximal-intensity exercise. A convenience sample of 52 healthy Thoroughbreds (aged 8.
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