Department of Rehabilitation Medicine, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
Centre for Epidemiology and Evidence-based Practice, Department of Social and Preventive Medicine, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
Cardiovasc Eng Technol. 2024 Feb;15(1):12-21. doi: 10.1007/s13239-023-00693-z. Epub 2023 Nov 16.
Photoplethysmography measurement of heart rate with wrist-worn trackers has been introduced in healthy individuals. However, additional consideration is necessary for patients with ischemic heart disease, and the available evidence is limited. The study aims to evaluate the validity and reliability of heart rate measures by a wrist-worn photoplethysmography (PPG) tracker compared to an electrocardiogram (ECG) during incremental treadmill exercise among patients with ischemic heart disease.
Fifty-one participants performed the standard incremental treadmill exercise in a controlled laboratory setting with 12-lead ECG attached to the patient's body and wearing wrist-worn PPG trackers.
At each stage, the absolute percentage error of the PPG was within 10% of the standard acceptable range. Further analysis using a linear mixed model, which accounts for individual variations, revealed that PPG yielded the best performance at the baseline low-intensity exercise. As the stages progressed, heart rate validity decreased but was regained during recovery. The reliability was moderate to excellent.
Low-cost trackers AMAZFIT Cor and Bip validity and reliability were within acceptable ranges, especially during low-intensity exercise among patients with ischemic heart disease recovering from cardiac procedures. Though using the tracker as part of the diagnosis tool still requires more supporting studies, it can potentially be used as a self-monitoring tool with precautions.
腕戴式追踪器的光电容积脉搏波（PPG）心率测量已在健康个体中得到应用。然而，对于缺血性心脏病患者，需要额外考虑，并且现有证据有限。本研究旨在评估在缺血性心脏病患者递增跑步机运动期间，腕戴式 PPG 追踪器与心电图（ECG）相比，心率测量的有效性和可靠性。
51 名参与者在受控实验室环境中进行标准递增跑步机运动，患者身上附有 12 导联 ECG，并佩戴腕戴式 PPG 追踪器。
在每个阶段，PPG 的绝对百分比误差均在标准可接受范围内的 10%以内。进一步使用线性混合模型进行分析，该模型考虑了个体差异，结果表明 PPG 在基线低强度运动时表现最佳。随着阶段的进展，心率有效性降低，但在恢复期间得到恢复。可靠性为中等至优秀。
低价位的 AMAZFIT Cor 和 Bip 追踪器在可接受范围内具有有效性和可靠性，特别是在缺血性心脏病患者从心脏手术中恢复期间进行低强度运动时。虽然将追踪器用作诊断工具的一部分仍需要更多的支持性研究，但它可以作为一种自我监测工具，需要谨慎使用。
