Heart rate variability of qigong tiaoxi Author: Shen Z//Chai J//Yu Y Conference/Journal: 7th Int Sym on Qigong Date published: 1998 Other: Pages: 15 , Word Count: 83 Function changes of autonomic nervous system of 19 qigongers in 'Qigong Tiaoxi' were assessed with HRV analysis. HRV measurements were made by two methods (time domain and frequency domain). The results showed increased sympathetic nerve activation, LF, LF/HF increased, but RR no significant differences were found in 'Qigong Tiaoxi'. The results suggest that functional changes of autonomic nervous system of 'Qigong Tiaoxi' is marked by measurable moments of altered heart rates. Keywords: Qigong Tiaoxi, heart rate variability, time demanding method, frequency demanding method