片岡, 幸雄

小山内, 博

KATAOKA, Yukio

OSANAI, Hiroshi

[ABSTRACT] To clarify the effect of exercise on peripheral blood circulation, Accelerated plethysmogram APG) was measured together with blood pressure and heart rate on thirteen woman (aged23-58yrs with C-G pattern of APG while at rest and 1st, 5th and 10th minute after 10-15 minute jogging. Five waves(a-e) were discriminated in APG shape and the area above the baseline of APG were defined as positive area (+) which included a and e waves, and the area below including b, c and d wave was defined as the negative area (-), The ratios of the height of b, c, and d waves to that of "a" wave were calculated. APG Index was formulated as (-b+c+d)/a×10. The results obtained are summarized as follows, 1) Systolic pressure was higher at 1st, and lower at 5th and 10th minute after jogging than the resting value. Diastolic pressure and the ratio of b/a and c/a of APG were smaller at 1st. and higher at 5th and 10th minute after jogging than the resting values. APG index and the ratio of d/a at 1st, 5th and 10th min., after jogging maintained higher level than the resting values. The APG pattern of all subjects changed from 4 of C pattern, 5 of D pattern and 1 of F pattern at rest to 13 of B pattern at 1st and 5th min., and to 10 of B pattern and 3 of C pattern at 10th min. after jogging. 2) In the relationship between heart rate and APG after jogging, there were a tendency that the higher heart rate increase, the lower the ratio of b/a and c/a of APG change and the higher APG index and the ratio of d/a of APG change. In the recovery of 5th and 10th minute after jogging, the ratio of b/a of APG recovered toward lower level, and also the ratio of c/a and d/a of APG changed toward higher level. Consequently, APG index maintained higher leve1. 3) There were a significant correlationship between changes of the ratio of d/a of APG and changes of systolic and diastolic pressure after jogging. In particular, significant negative correlations in diastolic pressure were recognized during resting and at 5th and 10th minute after jogging. 4) In conclusion, quantitative analysis and pattern analysis of APG waveform showed that aerobic exercise like jogging is effective to improve temporarily peripheral blood circulation.