1. Ventilatory movement of the right hemi-diaphragm studied by video-fluorography correlated with qigong 24 cases skilled in the qigong exercises were observed. Among them, 11 cases did the relaxation qigong exercises, 13 did the 'small qi cycle exercise' . Results of the video-fluorography showed the average value of the sum (DD) of distance traveled during upward and downward movements of the diaphragm before the relaxation qigong was 54.6mm ± 14.8mm; while that measured in performing of the relaxation qigong was 72.6mm ± 23.6mm, the statistical comparison of DD before and during the qigong exercises showed T= 2.96 (P< 0.05) . For the small qi cycle exercises the average value of DD before the performance was 46.3mm ±24.7mm; while during the qigong exercises the average value was 95.4 ± 57.4mm. Statistical comparison of DD before and during the small qi cycle exercises showed T=3.68 (P