Baek Sora, Ha Yuncheol, Park Hee-Won
Department of Rehabilitation Medicine, Kangwon National University Hospital, Chuncheon, South Korea.
Department of Rehabilitation Medicine, Kangwon National University School of Medicine, Chuncheon, South Korea.
PM R. 2021 Apr;13(4):379-386. doi: 10.1002/pmrj.12424. Epub 2020 Jul 17.
Nordic walking is being used increasingly as an exercise method in many clinical disorders. To apply Nordic walking in cases of fragile or deconditioned patients, monitoring of exercise intensity such as heart rate (HR) measurement is required. The accuracy of wearable HR monitors during Nordic walking has not yet been reported.
To compare the accuracy of an electrocardiography (ECG)-based HR monitor (Polar H7) and a photoplethysmography (PPG)-based HR monitor (Fitbit Charge 2) during conventional and Nordic walking.
Accuracy was assessed by comparing the HR values obtained using the wearable devices with those obtained via 12-lead ECG as a reference.
Laboratory setting.
Fifteen male volunteers age 23.7 ± 3.0 years.
None.
HR was simultaneously recorded via 12-lead ECG, the Polar H7, and the Fitbit Charge 2 during conventional and Nordic walking. Agreement between the devices was assessed by calculating Lin's concordance correlation coefficient (r ), the mean absolute difference, and the limit of agreement (LoA) from Bland-Altman plots.
Regarding HR values including Nordic and conventional walking, there was a better agreement between the Polar H7 and the reference (r = 0.96) than between the Fitbit Charge 2 and the reference (r = 0.84). For the Polar H7, the mean absolute difference from the reference did not differ significantly between the walking methods; for the Fitbit Charge 2, the mean absolute difference was significantly higher during Nordic walking than during conventional walking (6.60 vs. 3.68 bpm, P < .001). The Fitbit Charge 2 had a wider LoA than did the Polar H7 during both walking methods.
ECG-based wearable devices may be better than PPG-based devices for monitoring HR during Nordic walking. However, both types of devices may adequately monitor HR during conventional walking.
在许多临床疾病中，越野行走越来越多地被用作一种锻炼方法。对于体弱或身体机能下降的患者，若要进行越野行走，需要监测运动强度，如测量心率（HR）。目前尚未有关于越野行走期间可穿戴式心率监测器准确性的报道。
比较基于心电图（ECG）的心率监测器（Polar H7）和基于光电容积脉搏波描记法（PPG）的心率监测器（Fitbit Charge 2）在传统行走和越野行走期间的准确性。
通过将可穿戴设备获得的心率值与作为参考的12导联心电图获得的心率值进行比较来评估准确性。
实验室环境。
15名年龄为23.7±3.0岁的男性志愿者。
无。
在传统行走和越野行走期间，通过12导联心电图、Polar H7和Fitbit Charge 2同时记录心率。通过计算林氏一致性相关系数（r）、平均绝对差值以及布兰德-奥特曼图的一致性界限（LoA）来评估设备之间的一致性。
关于包括越野行走和传统行走在内的心率值，Polar H7与参考值之间的一致性（r = 0.96）优于Fitbit Charge 2与参考值之间的一致性（r = 0.84）。对于Polar H7，两种行走方式下与参考值的平均绝对差值无显著差异；对于Fitbit Charge 2，越野行走期间的平均绝对差值显著高于传统行走期间（6.60对3.６8次/分钟，P < 0.001）。在两种行走方式下，Fitbit Charge 2的LoA均比Polar H7更宽。
在越野行走期间，基于心电图的可穿戴设备在监测心率方面可能优于基于光电容积脉搏波描记法的设备。然而，在传统行走期间，这两种类型的设备都可以充分监测心率。
