Speer Kathryn E, Semple Stuart, Naumovski Nenad, McKune Andrew J
Faculty of Health, Discipline of Sport and Exercise Science/University of Canberra, Canberra (ACT) 2617, Australia.
Research Institute for Sport and Exercise/University of Canberra, Canberra (ACT) 2617, Australia.
Eur J Investig Health Psychol Educ. 2020 Jan 10;10(1):390-404. doi: 10.3390/ejihpe10010029.
Heart rate variability (HRV) is an accepted method for determining autonomic nervous system activity and cardiovascular risk in various populations. This study assessed the validity and reliability of a commercially available finger photoplethysmography (PPG) system for measuring pediatric HRV in a real-world setting. Sixteen healthy children (4.06 ± 0.58 years) were recruited. The PPG system was compared to the Polar H10 heart rate (HR) sensor validated against ECG (gold standard) for HRV measurement. Seated short-term resting R-R intervals were recorded simultaneously using both systems. Recordings were performed on 3 days at the participants' school. Paired t-tests, effect sizes and Bland-Altman analyses determined the validity of the PPG system. The relative and absolute reliability of both systems were calculated. No HRV parameters were valid for the PPG system. Polar H10 yielded moderate (0.50-0.75) to good (0.75-0.90) relative reliability with R-R intervals and the standard deviation of instantaneous and continuous R-R variability ratio showing the best results (ICCs = 0.84). Polar H10 displayed better absolute reliability with the root mean square of successive differences, R-R intervals and HR showing the lowest values (TEM% < 12%). The use of the Polar H10 and not the PPG system is encouraged for HRV measurement of young children in an educational real-world setting.
心率变异性（HRV）是一种公认的用于确定不同人群自主神经系统活动和心血管风险的方法。本研究评估了一种市售的手指光电容积脉搏波描记法（PPG）系统在实际环境中测量儿童HRV的有效性和可靠性。招募了16名健康儿童（4.06±0.58岁）。将PPG系统与经心电图（金标准）验证用于HRV测量的Polar H10心率（HR）传感器进行比较。使用这两种系统同时记录坐位短期静息R-R间期。在参与者的学校进行了3天的记录。配对t检验、效应量和布兰德-奥特曼分析确定了PPG系统的有效性。计算了两种系统的相对和绝对可靠性。PPG系统的HRV参数均无效。Polar H10在R-R间期方面具有中等（0.50-0.75）至良好（0.75-0.90）的相对可靠性，瞬时和连续R-R变异性比值的标准差显示出最佳结果（组内相关系数=0.84）。Polar H10在逐次差值的均方根、R-R间期和HR方面显示出更好的绝对可靠性，其最低值（TEM%<12%）。在教育实际环境中，鼓励使用Polar H10而非PPG系统来测量幼儿的HRV。
