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17 天
智能手表测得最不准的指标,竟然是这些……
可穿戴设备连续显示心率时,测量方式通常是光电体积描记法(photoplethysmography, PPG)。这种测量方式会受到多种因素影响,例如运动强度、运动类型、腕部活动、腕带松紧、皮肤色素和表面的污垢、心律失常等。 根据 18 项研究的综合测试,心率测量在静息状态 ...
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