ANáLISE DA VARIABILIDADE DA FREQUêNCIA CARDíACA EM INDIVíDUOS HIPERTENSOS SUBMETIDOS à HIDROTERAPIA

Arterial hypertension (AH) is the systolic pressure greater than or equal to 140 mmHg and diastolic blood pressure greater than or equal to 90 mmHg, a morbid condition present in a large population. Since the heart rate (HR) is modulated by sympathetic and parasympathetic branches of the autonomic nervous system (ANS). Autonomic changes may be given by the analysis of heart rate variability (HRV), which determines the preservation or impairment of cardiac SNA, witch is extremely associated with the risk of mortality. The purpose of this research was to observe the response of HR in order to facilitate clinical interpretation, exercise prescription and prevention of cardiovascular diseases. The participants were 15 hypertensive, sedentary, age 50 to 75 years, assessed medical history, medication and stress test analysis of walking to the degree of risk stratification and better planning of treatment. The physiotherapy treatment was performed in the heated pool of physical therapy clinic at the University of Oeste Paulista - UNOESTE of Presidente Prudente. The implementation of physical activity was performed with 60 to 75% of submaximal heart (195 - age) using the Karvonen formula. It was used T test for paired data. Results proved significant in RR intervals (p<0.005) and no significant responses in the intervals and RMSSD and PNN50 (p>0.005). The survey revealed that there was no change in HRV after the training period, assuming that the holiday period and the absence of treatment in some patients may have influenced the responses.