[KongchangAI]
Unverified85% confidenceFactTime unknown

心率款运动耳机的光电式(PPG)心率监测建议选择耳道内或耳甲腔贴合式传感器方案,其在耳部血流丰富区域测量,静息与稳态跑步误差通常可控制在±3-5bpm,但高强度间歇(HIIT)等剧烈变速运动下延迟和误差会明显放大,追求训练精度者仍需搭配胸带

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