Validity of heart rate measurements by the Garmin Forerunner 225 at different walking intensities
Validity of heart rate measurements by the Garmin Forerunner 225 at different walking intensities
复制标题
DOI：
10.1080/03091902.2017.1333166
复制
发表时间：
2017-01-01
影响因子：
--
通讯作者：
Cornelissen, Veronique
中科院分区：
文献类型：
--
作者：
Claes, Jomme;Buys, Roselien;Cornelissen, Veronique
基于光体积描记(PPG)的手腕佩戴的心率监测器的准确性并未被临床完全接受。因此，我们的目标是验证一种商用PPG心率监测器的心率测量结果，即Garmin Forerunner((R))225。12名健康志愿者(6名女性，平均年龄：28岁)在跑步机上进行试验，包括：坐5min，站立5min，以4 km/h的速度步行10min，以5%的坡度和4~6代谢当量(METS)的强度步行10min，以8%的坡度和7MET或更高的强度步行10min。步行速度由个人决定。竞走比赛由标准的五分钟休息时间隔开。心率被测量为最后三分钟站立和每次竞走的平均值。以三导联贴片心电图法(心电图法)作为判断标准。统计分析包括皮尔逊相关(R)、配对t检验、均方根误差(RMSE)和Bland？Altman曲线图。每种情况下每三分钟的平均值在Garmin Forerunner((注册商标))225和Ztor((注册商标))之间没有显著差异。RMSE为3.01次/分或2.89%。布兰德-阿尔特曼偏差为1.57 bpm。协议上限(LOA)很宽，从32.53到29.40 bpm不等。然而，皮尔逊的相关系数在0.650到0.868之间，表明效度中等到很强。一般来说，平均心率、r值、RMSE和Bland-Altman偏差表明，在这个健康成年人样本中，总体上符合得很好，但广泛的LOA使人们很难相信单独的测量结果。
The accuracy of wrist worn heart rate monitors based on photoplethysmography (PPG) is not fully clinically accepted. Therefore, we aimed to validate heart rate measurements of a commercially available PPG heart rate monitor, i.e. the Garmin Forerunner((R)) 225. Twelve healthy volunteers (six women; mean age: 28 years) performed a treadmill protocol consisting of: five minutes sitting, five minutes standing, 10 minutes walking at 4 km/h, 10 minutes walking at a gradient of 5% and intensity of 4-6 metabolic equivalents (METs), 10 minutes walking at a gradient of 8% and intensity of seven METs or more. Walking speeds were individually determined. Walking bouts were separated by a standardised five minute rest period. Heart rate was measured as the average of the last three minutes standing and of each walking bout. A three lead patch-based electrocardiogram (ECG; Zensor((R))) was used as criterion method. Statistical analyses included Pearson's correlation (r), paired t-tests, root mean squared error (RMSE) and Bland?Altman plots. The mean values per three minutes of every condition did not differ significantly between the Garmin Forerunner((R)) 225 and the Zensor((R)). RMSE was 3.01 beats per minute (bpm) or 2.89%. The Bland-Altman bias was 1.57 bpm. Limits of agreement (LoA) were wide, ranging from 32.53 to 29.40 bpm. However, Pearson's r ranged from 0.650 to 0.868 suggesting moderate to strong validity. Generally, mean heart rates, r values, RMSE and the Bland-Altman bias indicated good overall agreement in this sample of healthy adults, but wide LoA are making it difficult to trust individual measurements.