Young Athletes 21 Kilometers Run Heart Rate Variability Analysis

Heart rate variability analysis can be used as reflect the autonomic nervous on the cardiovascular system adjust a valuable situation of non-invasive method. In adults, heart rate variability reduce physical and psychogenic often imbalance related. Instead, heart rate variability increases are hint health improved. In young children in a similar situation, such as children's heart rate variability in pediatric disease with some lower often state such as heart failure, obesity and diabetes, and closely related, heart rate variability reduced the deterioration of the illness that children. Research shows that exercise training can improve on cardiovascular autonomic nervous adults adjust function. In adults, with physical quality improvement, especially the biggest improvement of perturbation of oxygen, cardiovascular autonomic nervous also appears obvious adaptive change, performance for heart rate variability increases. However, in this field of research, adolescents, especially adolescence stage less healthy young after sports training would improve the autonomic nervous regulation or unclear.This research chose in adolescence phase of a group of high load training athletes and a group of middle-long-distance basketball player, and a group of high school students had no systematic sports training as control group, watch their heart rate variability in quiet state whether there is difference, to determine whether will improve sports training the young autonomic nerve adolescent stage adjustment function. In addition, in order to better understand the sports training to observe the effect, we also a big load middle-long-distance athletes in heart rate variability in the training of acute effects. Through the time domain and frequency domain two indexes, this paper quantitatively analyze the great physiological load of exercise training young athletes heart neuromodulation function changes and heart rate variability rule, through the heart rate variability indicators to reflect athletes training level, training status, so as to give the coaches science, material selection, prevention of athletic sudden provide some theoretical basis, play a guiding role.Selected schools in liaoning province 12-16 years of secondary level above between male athletes called middle-long-distance main research object, 10 basketball player 10 and ordinary high school 10 as auxiliary comparative research object, two experiments: first for quiet condition of three groups HRV index determination; The second is the middle-long-distance athletes before and after exercise HRV index comparison. Test instrument use Hong Kong Baptist university provides Finland bo can company produce of polarRS800 heart rate monitors and chest belt, then the results are statistical analysis.(1)Young athletes and ordinary high school students in heart rate variability in quiet condition no significant differences but HRV value can be overall athletes than ordinary high school students, suggests that long-term training on heart plant nerve adjust ability have certain enhancing effect.(2)Endurance training can increase with HRV, may increase the tidal volume, myocardial itself physiological characteristic, waiting to continue to change related research.(3)Before and after exercise heart rate variability of the characteristics and the changing can be used as evaluation exercise training effect and state. The effective index...