Yang Junchao, Lu Zhihui, Li Xiangxin, Tao Kuan, Qiu Junqiang
School of Sport Science, Beijing Sport University, Beijing, 100084, China.
Beijing Sports Nutrition Engineering Research Center, Beijing, 100084, China.
Sci Rep. 2025 May 7;15(1):15944. doi: 10.1038/s41598-025-00559-5.
Heart rate (HR) monitoring using earbuds presents a promising avenue for precise measurement, yet its validity remains under investigation during stationary cycling. In this study, we assessed the validity of the Hera Leto consumer earbuds by enrolling twenty-eight athletes as participants. Each participant wore a chest-strap Polar H10, considered the gold-standard reference, while simultaneously testing three HR monitors: the Hera Leto (worn on the ears), the Polar Verity Sense (worn on the upper arm), and the Polar Vantage V (worn on the wrist). The exercise protocol included four steady-state exercise sessions, six sessions of severe intensity exhaustive exercise, and three high-intensity interval training (HIIT) sessions. Our findings revealed a robust correlation ([Formula: see text]=0.970, [Formula: see text]<0.001) between the HR measurements obtained from Hera Leto and Polar H10 across all exercise intensities, with a minimal systematic bias of - 0.67 bpm. with a minimal systematic bias of -0.67 bpm. Notably, Hera Leto demonstrated superior performance, with a mean absolute error (MAE) of 2 bpm and concordance correlation coefficient (CCC) of 0.97, compared to the Polar Verity Sense (MAE = 4 bpm, CCC = 0.88) and Polar Vantage V (MAE = 4 bpm, CCC = 0.93). Although the precision of HR measurement decreased with increasing exercise intensity, Hera Leto exhibited a slower onset of this decline compared to the other devices. Overall, our study underscores the potential of Hera Leto earbuds as a valid tool for HR monitoring, particularly in scenarios involving steady-state exercise.
使用耳塞进行心率（HR）监测为精确测量提供了一条很有前景的途径，但其在静止骑行过程中的有效性仍在研究中。在本研究中，我们招募了28名运动员作为参与者，评估了Hera Leto消费级耳塞的有效性。每位参与者都佩戴了被视为黄金标准参考的胸带式Polar H10，同时测试了三款心率监测器：Hera Leto（戴在耳朵上）、Polar Verity Sense（戴在上臂）和Polar Vantage V（戴在手腕上）。运动方案包括四次稳态运动训练、六次高强度力竭运动训练和三次高强度间歇训练（HIIT）。我们的研究结果显示，在所有运动强度下，Hera Leto和Polar H10获得的心率测量值之间存在很强的相关性（[公式：见正文]=0.970，[公式：见正文]<0.001），系统偏差最小为-0.67次/分钟。值得注意的是，与Polar Verity Sense（平均绝对误差=4次/分钟，一致性相关系数=0.88）和Polar Vantage V（平均绝对误差=4次/分钟，一致性相关系数=0.93）相比，Hera Leto表现更优，平均绝对误差为2次/分钟，一致性相关系数为0.97。尽管心率测量的精度随着运动强度的增加而降低，但与其他设备相比，Hera Leto这种下降的起始速度较慢。总体而言，我们的研究强调了Hera Leto耳塞作为心率监测有效工具的潜力，特别是在涉及稳态运动的场景中。
