Active Conditions of Autonomic Nervous System and Cardiovascular System Following a Practice of Qi-gong After Stress

Abstract

Fourteen healthy male and female (mean age=44.1±9.6) performed Qi-gong practice. Active conditions of the autonornic nervous system and the cardiovascular system before and after Qi-gong practice following the stress were observed. Conditions of the autonomic nervous system and the cardiovascular system were estimated by analyses of heart rate variability and pulse waves at the radial artery. As a Qi-gong practice, subjects sat quietly with soft and natural breath and with concentration to a lower abdominal region. As a result, Qi-gong practice activated the condition of the vagal nerve. Qi-gong practice without any motion repressed the condition of the sympathetic nerve which controls temperature acting on peripheral circulation. Arteries tended to contract after stimuli of noise and dazzling lights. Meanwhile, after Qi-gong practice, arteries tended to converge into the moderate contraction (compliance).