Padronização da medição da frequência cardíaca de repouso

Abstract

During rest, cholinergic activity predominates over the sympathetic system. Thus the control mechanism of Heart Rate by vagal activity, together with the reduced energy requirements, will determine the frequency resting heart rate (RHR) of an individual physiologically intact. The RHR has recognized as important independent predictor of health cardiovascular disease compared with non-cardiovascular, beyond its use in formulas, questionnaires and protocols related to exercise physical. Despite the notoriety of the RHR recognized in clinical practice and physical not yet established a method of measuring with scientific evidence that support the existence of a pattern. Thus the present study sought investigate, by means of two articles, how the RHR has been used in professional practice of physical education professionals, regarding the forms of measurement (time, location), and during antenatal care (substances interference and environmental conditions) and objective measurement. Furthermore, test and propose practical applications of RHR through time and body posture measurement. In the first study were interviewed education professionals Physics, through a questionnaire consisting of eight questions on how to use of the RHR, such as importance of the variable, rest period before and during the measurement, body position, equipment, and conditions environmental (temperature, light, interfering substances). According with the results presented by the questionnaire responses, we conclude that the use of RHR by physical education professionals, has no a standard for its measurement, with differences statistically significant use and the criteria for evaluation. In the second study were studied 39 young subjects (21 men and 18 women) who underwent evaluations at rest in two positions, supine and sitting positions, each with for 60 minutes. The results show that measurements made on only five minutes were not statistically different measurements performed in 60 minutes. Furthermore, in the sitting position is 12% higher HRH that in the supine position, portraying statistical difference. These results repeated between genders and between more and less active individuals. Therefore the According to the results of the studies, it was possible to verify the absence of consensus for the measurement of HRH among physical education teachers. However the present study proposes to measure for young men and women more and less active, using 5-minute rest, recording the average this period and noting the position measured for the corrections.