健康的原理分析之心率变异性hrv心率变异性(heart rate variability
心率变异性(hrv, heart rate variability)可反映自主神经系统活性和
heart rate monitor(心率监测bpm跟踪器app)截图
heart_rate_monitor
每次在时间上间隔的变化量(heart rate's variability)心脏不会跟节拍
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