Heart rate variability in athletes with symptoms of non-functional overload

The article examines the effect on heart rate variability (HRV) indices in athletes depending training status, different types of physical exertion, gender and age, presented both cross-sectional longitudinal studies. Also included is predictability HRV during overtraining, athletic condition, performance. Heart has long been used as a diagnostic marker overexertion overtraining. A large body evidence shows that all ages, regular aerobic usually results significant improvements total instantaneous HRV. These changes, which are accompanied by decrease at rest submaximal exercise, reflect an increase autonomic efferent activity shift favor enhanced vagal modulation rate. At present, available data do not allow us to draw definitive conclusions about usefulness traditional for evaluating performance exercises monitoring load. discrepancies published so far due several factors, including insufficient study size design, methods. It also remains be seen whether will useful diagnosing