Kobayashi Masaki, Shinohara Tomoyuki, Usuda Shigeru
Geriatrics Research Institute and Hospital: 3-26-8 Ootomo-Machi, Maebashi 371-0847, Japan.
Takasaki University of Health and Welfare, Japan.
J Phys Ther Sci. 2021 Jan;33(1):45-51. doi: 10.1589/jpts.33.45. Epub 2021 Jan 5.
[Purpose] We aimed to examine the accuracy of heart rate monitors worn on the wrist by patients with stroke. The wrist worn heart rate monitor could improve the quality of rehabilitation by monitoring exercise intensity during physical therapy. [Participants and Methods] Thirty inpatients with subacute hemiparetic stroke wore heart rate monitors on both (non-paretic and paretic) wrists, as well as a chest heart rate monitor. We recorded the heart rate values measured at the wrist and chest every minute during physical therapy sessions. The wrist monitors were an optical heart rate measurement device based on photoplethysmography, and the chest monitor was a traditional chest device based on electrocardiography. The relative and absolute reliabilities between the heart rate measurements from the wrist and chest monitors were calculated. [Results] The intraclass correlation coefficients for model 2.1 ranged from 0.75 to 0.79. Bland-Altman analysis revealed a very slight fixed bias; however, no significant proportional bias was observed. For the non-paretic and paretic sides, the lower and upper limits of agreement ranged from -21.8 to 23.8 beats/min and from -20.8 to 21.6 beats/min, and the mean absolute percentage errors were 6.7% and 5.9%, respectively. The Cohen's d value was small. [Conclusion] The relative reliability of the wrist heart rate monitors was substantial. The absolute reliability as bias in wrist heart rate and chest heart rate was small, but heart rates estimated from wrist monitors were not particularly accurate.
[目的] 我们旨在检测中风患者佩戴在手腕上的心率监测器的准确性。佩戴在手腕上的心率监测器可通过在物理治疗期间监测运动强度来提高康复质量。[参与者与方法] 30例亚急性偏瘫性中风住院患者在双腕（非患侧和患侧）佩戴心率监测器，同时佩戴胸部心率监测器。在物理治疗期间，我们每分钟记录一次手腕和胸部监测到的心率值。手腕监测器是基于光电容积脉搏波描记法的光学心率测量设备，胸部监测器是基于心电图的传统胸部设备。计算手腕和胸部监测器心率测量之间的相对和绝对可靠性。[结果] 模型2.1的组内相关系数在0.75至0.79之间。Bland-Altman分析显示存在非常轻微的固定偏差；然而，未观察到显著的比例偏差。对于非患侧和患侧，一致性的下限和上限分别为-21.8至23.8次/分钟和-20.8至21.6次/分钟，平均绝对百分比误差分别为6.7%和5.9%。Cohen's d值较小。[结论] 手腕心率监测器的相对可靠性较高。手腕心率和胸部心率的绝对可靠性偏差较小，但手腕监测器估计的心率并非特别准确。
