Abstract
ABSTRACT The pattern for ambulatory electrocardiography was evaluated in 25 healthy German Shepherd dogs. The influences of gender, age, and physical activity in HR maximum, mean, and minimum (HRmx, HRme, and HRmin, respectively) were studied. The physically active dogs (PA) showed lower HRme than sedentary animals (S) (P=0.03), whereas HRmx and HRmin were not altered (P=0.06 and P=0.65, respectively). The HRme was 80.89 ± 13.85 for PA and 112.94 ± 35.71 for S. No effect of gender and age on HR was observed. It is possible to state that the physical activity can modulate the sinus node of the dogs. Keywords: dog, German Shepherd, ambulatory electrocardiography, physical activity REFERENCIAS BIBLIOGRAFICAS BILLMAN, G.E. Aerobic exercise conditioning: a nonpharmacological antiarrhythmic intervention. J. Appl. Physiol ., v.92, p.446-454, 2002. DIXON, E.M.; KAMATH, M.V.; MCCARTNEY, N. et al. Neural regulation of heart rate variability in endurance athletes and sedentary controls. Cardiovasc. Res
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