The effects of Qigong training on cardiovascular changes under simulated weightlessness

摘要

Ten healthy male volunteers aged 19-21, without any knowledge about Qigong, were selected as test subjects. They were divided into Qigong group( 5 men) and control group (5 men ).We study the effects of Qiqong training on cardiovascular system during weightlessness simulated by head-down tilt(HDT)-6° bedrest.The bedrest experiment consisted of a 3-day ambulatory control period, 21 days of anti-orthostatic bedrest at head-down tilt -6° and a 7-days of recovery period. Before the bedrest experiment, subjects in Qigong group carried out "Zhineng and Bedrest" Qigong training for 95-day. During whole experimental period, subjects in Qigong group carried out "Bedrest Qigong" training for three times every day. The control group did not take part in any Qigong training. Cardiovascular indices were measured four times daily on given days. Before and after bedrest, all indices were measured in supine horizontal position. During whole experiment, all measurements were performed under the rest state without Qigong training. The results of this study showed that during bedrest, in control group, DBP,MBP and PR increased significantly; PP,SV,CO,EVI and VET decreased markedly. In Qigong group, these changes mentioned above were counteracted effectively by Qigong training, the magnitudes of changes were lower than that of control group, so cardiovascular response ,CO circadiam rhythm and other responses,which were also observed by other authors in the present experiment, were better than that of the control group. The results of this study provide the experimental foundation for counteracting the changes of cardiovascular indices induced by weightlessness using the Qigong training.