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

采用超声多普勒法测量运动状态下反映脑血流的颈动脉血流速度，同时测量心电图。结果如下：（1）声场分布的仿真结果表明，超声探头的流场分布波形可以考虑运动时血管转位的假设，以处理左右或上下的转移。（2）采用IC型滤波电路和吉尔伯特乘法电路解决了晶振电路的问题，在检波电路中采用吉尔伯特蜂窝解调电路和带通滤波器振荡电路。(3)It结果表明，运动试验中，从运动员与非运动员的最大血流速度和ECU图的差异，可用于心血管疾病的早期诊断。(4)It结果表明，运动负荷递增时，血流速度的变化幅度增大，运动负荷递减时，血流速度的变化幅度减小。而颈动脉最大血流速度分量在一个测量时间内几乎是固定的。据推测，在这种程度的锻炼中，脑血流的自我调节充分发挥了作用。通过该设备的测量，通过这些结果的总和证明了在运动试验中对包括大脑在内的循环系统没有造成大的影响。(5)It通过改变姿势和运动量，测量血压和心率的波动。然而，这些运动下的颈动脉最大血流速度证实在健康受试者中没有产生有意义的变化。可以预期的是，尝试建立基于这些知识的健康安全处方。

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.