| （1.School of Physical Education，South China Normal University，Guangzhou 510006，China；2.School of Physical Education，South China University of Technology，Guangzhou 510641，China） Abstract: In order to study the effects of long-term exercising on the cardiac autonomic nervous system, the authors observed changes of chronotropic response and heart rate attenuation during exercising by testing the cardiac and pulmonary functions of 20 male students in a physical education institute and 17 other male college students, and revealed the following findings: the chronotropic response index of students in the exercising group is significantly higher than the same of students in the control group; there is no significant difference in heart rate attenuation be-tween students in the two groups, which indicate that long-term exercising can boost the regulating capacity of the cardiac autonomic nervous system, especially, enhance the sensitivity of sympathetic nerve.
Key words: sports medicine；exercising；test of cardiac and pulmonary functions；chronotropic response；heart rate attenuation；autonomic nervous system |
