Khushhal Alaa Abdulhafiz, Mohamed Ashraf Abdelaal, Elsayed Mahmoud Elshahat
Department of Medical Rehabilitation Sciences, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia.
Cardiology department, Faculty of Medicine, Al Azhar University, Egypt.
Glob Heart. 2025 Sep 2;20(1):74. doi: 10.5334/gh.1456. eCollection 2025.
The validity of Apple Watch for measuring heart rate (HR) and oxygen saturation (SpO) in patients with cardiac diseases is still unclear. Therefore, this study aimed to investigate the accuracy of the Apple Watch in measuring HR and SpO in patients with cardiac diseases. A cross-sectional study recruited 260 cardiac patients, including 190 with regular heart rhythm and 70 with cardiac arrhythmia. Each patient wore the Apple Watch alongside a Polar HR monitor at rest, during and after mild- to moderate-intensity exercise sessions, and wore the Apple Watch alongside a Contec pulse oximeter at rest and after exercise. The Apple Watch showed excellent validity (ICC = 0.100) in measuring the HR at rest, during mild- to moderate-intensity exercise, and after exercise in cardiac patients, as well as in measuring SpO at rest (ICC = 0.100) and after exercise (ICC = 0.92). However, the validity of the Apple Watch for measuring SpO decreased slightly after exercise (ICC = 0.85; good validity), especially in patients with an irregular heart rhythm. Overall, the Apple Watch appears valid for measuring HR and SpO at rest and after exercise, and for measuring HR during mild- to moderate-intensity training in cardiac patients.
苹果手表用于测量心脏病患者心率（HR）和血氧饱和度（SpO）的有效性仍不明确。因此，本研究旨在调查苹果手表测量心脏病患者HR和SpO的准确性。一项横断面研究招募了260名心脏病患者，其中190名心律正常，70名患有心律失常。每位患者在休息时、轻度至中度强度运动期间及运动后，将苹果手表与博能心率监测仪一起佩戴，在休息时和运动后将苹果手表与康泰脉搏血氧仪一起佩戴。苹果手表在测量心脏病患者休息时、轻度至中度强度运动期间及运动后的HR方面显示出极佳的有效性（组内相关系数ICC = 0.100），在测量休息时的SpO（ICC = 0.100）和运动后的SpO（ICC = 0.92）方面也是如此。然而，运动后苹果手表测量SpO的有效性略有下降（ICC = 0.85；有效性良好），尤其是在心律不齐的患者中。总体而言，苹果手表似乎可有效测量休息时和运动后的HR与SpO，以及心脏病患者在轻度至中度强度训练期间的HR。
