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Steel HR 利用光电容积脉搏波描记法 (PPG) 收集心率数据,并根据专门算法计算测量值。PPG 利用血液和皮肤的吸光度来测量静脉血流变化,并用于计算心率。因此,如果 Steel HR 的佩戴方式不准确,可能难以获得准确的测量结果。

为了获取最准确的测量结果,请遵循以下指南:

  • Steel HR 应佩戴得足够紧,使手表背面的传感器紧贴皮肤。
  • Steel HR 应佩戴在距离腕骨 1 2 指宽处
  • 使用 Withings Steel HR 附送的腕带
  • 确保手表在运动过程中固定在原位。如果手表松动,请将腕带扣紧一格。
  • 确保腕带牢固但不过紧。腕带应舒适地佩戴在手腕上,并留有一定余裕
  • 确保手表干净整洁,以免灰尘使遮住绿色 LED

可能导致心率测量不准的其他因素:

皮肤血流

皮肤血流(即皮肤中的血流量)随个体和环境而异。在特定情况下,Steel HR 可能无法提供准确的心率测量值。

皮肤和血液的性质

Steel HR 采用以皮肤和血液吸光度为基础的测量技术。皮肤的任何永久或暂时变化(例如纹身、汗液甚至手腕上的毛发)都会影响测量。

环境

环境因素也会影响 Steel HR 提供准确测量值的能力。例如,水会阻挡或改变光的色散,严寒天气也会影响皮肤血流。

运动

Steel HR 必须牢牢固定在原位,才能提供心率测量值。手腕发力的运动(例如拳击或排球)会导致 Steel HR 无法提供准确的心率测量值。

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