Bretonneau Quentin, Peruque-Gayou Etienne, Wolfs Etienne, Bosquet Laurent
Laboratoire MOVE (UR 20296), Faculté des sciences du sport, Université de Poitiers, Poitiers,France.
Int J Sports Physiol Perform. 2023 Feb 20;18(4):440-443. doi: 10.1123/ijspp.2022-0288. Print 2023 Apr 1.
The accuracy of heart rate measured with a wrist photoplethysmography monitor can be influenced by the tightening of the wristband, movement of arms, or kinetics of the signal (eg, steady-state exercise vs on- and off-transients). To test these hypotheses, photoplethysmographic and electrocardiographic (ECG) signals were compared.
Thirty participants (50% female) randomly performed two 13' sequences (3' rest, 5' submaximal-intensity exercise, and 5' passive recovery) on a motorized treadmill and a bicycle ergometer. Heart rate was measured concomitantly with a 10-lead ECG, a chest-strap monitor, and 2 wrist photoplethysmography monitors (Polar Unite) with different tightening (free vs imposed at the maximum tolerable).
The level of association (r) and coefficient of variation (CV; ie, the error of measurement) of the Polar Unite versus the 10-lead ECG is affected by the tightness of the wristband (normal vs high; r = .83 and .96, CV = 16.1 and 8.1% for the treadmill, respectively; r = .71 and .97, CV = 20.3% and 6.2% for the bicycle, respectively) by the phase of the signal (transition vs steady state; r = .90 and .97, CV = 9.0% and 7.6% for the treadmill, respectively; r = .93 and .99, CV = 7.5% and 3.1% for the bicycle, respectively) and movement of arms (treadmill vs bicycle; r = .90 and .93, CV = 9.0% and 7.5% during the transition phase, respectively; r = .97 and .99, CV = 7.6% and 3.1% during the steady-state phase, respectively).
The accuracy of heart rate measured with a wrist photoplethysmography monitor is affected by the tightness of the wristband and the phase of the signal. A high tightening is required when high accuracy is expected.
腕部光电容积脉搏波监测仪测量心率的准确性可能会受到腕带松紧、手臂运动或信号动力学（如稳态运动与起始和结束瞬态）的影响。为验证这些假设，对光电容积脉搏波信号和心电图（ECG）信号进行了比较。
30名参与者（50%为女性）在电动跑步机和自行车测力计上随机进行两组13分钟的序列测试（3分钟休息、5分钟次最大强度运动和5分钟被动恢复）。同时使用10导联心电图、胸带监测仪以及2台腕部光电容积脉搏波监测仪（Polar Unite）测量心率，其中一台腕部监测仪的腕带松紧度不同（自由状态与最大可耐受状态）。
Polar Unite与10导联心电图之间的关联水平（r）和变异系数（CV，即测量误差）受腕带松紧度（正常与高；跑步机测试中，r分别为0.83和0.96，CV分别为16.1%和8.1%；自行车测试中，r分别为0.71和0.97，CV分别为20.3%和6.2%）、信号阶段（过渡与稳态；跑步机测试中，r分别为0.90和0.97，CV分别为9.0%和7.6%；自行车测试中，r分别为0.93和0.99，CV分别为7.5%和3.1%）以及手臂运动（跑步机与自行车；过渡阶段，r分别为0.90和0.93，CV分别为9.0%和7.5%；稳态阶段，r分别为0.97和0.99，CV分别为7.6%和3.1%）的影响。
腕部光电容积脉搏波监测仪测量心率的准确性受腕带松紧度和信号阶段的影响。若期望获得高精度测量结果，则需要较高的腕带紧度。
