Development of appropriate prescription for health using the simultaneous telemetry method of cerebral blood flow velocity and electrocardiogram under physical exercise.

用超声多普勒法测量反映运动时脑血流的颈动脉血流速度，同时测量心电图。结果：(1)声场分布的模拟结果表明，超声探头的流量分布波形可以考虑运动时血管移位的假设，以处理左右或上下的移位。(2)晶振电路采用IC型滤波电路和吉尔伯特乘法电路，检测电路采用吉尔伯特蜂窝解调电路和带通滤波振荡电路。(3)从运动试验中学科人员与非学科人员的最大血流速度和ECU模式的差异可用于心血管疾病的早期发现。(4)运动负荷增加时血流速度变化增大，减量负荷时血流速度变化减小。而颈动脉的最大血流速度分量在一段时间内几乎是固定的。据推测，脑血流的自我调节在这一程度上发挥了足够的作用。通过该仪器的测量，综合这些结果，证明在运动试验中对包括大脑在内的循环系统没有大的影响。(5)测量了不同态度和锻炼方式对动脉血压和心率波动的影响。然而，这些运动下的颈动脉最大血流速度证实，有意义的变化不会发生在健康受试者身上。可以预期的是，基于这一知识建立安全的健康处方是一种尝试。

Carotid artery blood flow velocity which reflected cerebral blood flow under physical exercise was measured by the ultrasound Doppler method, and the electrocardiogram(ECG) was measured simultaneously. Results : (1)The result of the simulation of the sound field distribution showed that the flow distribution waveform of the ultrasound probe might be considered on the assumption of the transposition of the blood vessel under exercise in order to deal with the transfer of right and left or top and bottom. (2)The crystal-oscillator circuit was solved by using IC type filter circuit and Gilbert multiplication type circuit in this by using Gilbert cellular demodulation circuit and band-pass filter for oscillation circuit in the detection circuit. (3)It was indicated that it could be applied to the early detection of cardiovascular disease from the difference the discipline person and the non-discipline person for the maximum blood flow velocity and for ECU pattern during physical exercise test. (4)It was recorded that the change of the blood flow velocity increased under increment load of exercise and that it decreases in the decrement load. However, maximum blood flow velocity component of carotid artery was almost fixed during a measuring time. It is guessed that the self-regulation of cerebral blood flow sufficiently works on this in the exercise of this degree. Through the measurement by this equipment, it was proven that large effect was not caused circulatory system including the brain in the exercise test by the total of these results. (5)It was measured that the fluctuation of arterial blood pressure and heart rate changed by change of the attitude and exercise. However, carotid artery maximum blood flow velocity under these exercise confirmed that the change with the meaning was not produced in the healthy examinee. It can be expected that the establishment of the safe prescription for health based on this knowledge is attempted.