Maximum high frequency: the importance and problems related to the measure: a review.
Abstract
HRmax is defined as the highest HR reached in an evaluation test of VO2max. This test may require only a single super-maximum continuous stress lasting for 3 to 5 minutes or making efforts to fatigue progressive intensity. Heart rate is a variable applicable and practical to estimate the level of effort can be used to control training loads. This is due to the existence of a linear relationship between HR and oxygen consumption. On the other hand, HR is modulated by a joint action, although independent of the sympathetic and parasympathetic branches ofthe autonomic nervous system. To partially or completely inhibit cardiac vagal activity, is an acceleration of HR. Only after a few seconds, the participation of adrenergic is increased. The modulation of autonomic responses of SNS and PNS occur through mechanoreceptors that provide afferent information that is automatically interpreted and produce a response of the autonomic system, to raise or reduce FC. In conclusion, the various possibilities on the concepts and measurement of HR and its interpretation, we must take into account the strategies of control and regulation is as diagnosis, prognosis or even for exercise prescription should be based on scientific evidence.
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