| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
The high-frequency component (HF at 0.15-0.4 Hz) of the power spectrum of RR and PP interval variability during dynamic exercise were assessed using a Wavelet transform to identify cardiac vagal outflow. At 140 beats/min during exercise, HF component of PP interval was significantly larger than that of RR interval.
It has been generally considered that cardiac vagal nerve activity has no influence on HR increases above 100 beats/min. In contradiction to the conventional thought, the present findings indicate that cardiac vagal nervous system remains active at 140 beats/min.
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