Research Unit of Biomedicine and Internal Medicine, University of Oulu, Oulu, Finland.
Biocenter Oulu, University of Oulu, Oulu, Finland.
Physiol Rep. 2024 Aug;12(16):e70007. doi: 10.14814/phy2.70007.
Smartwatches and home-based blood pressure (BP) devices have permitted easy use of heart rate variability (HRV) and BP to identify the recovery status of users after acute exercise training. The reproducibility of HRV and BP after exercise in healthy young participants is not well known. Eighteen participants (age 27 ± 6 years, female n = 8) performed test and retest aerobic exercises (cycling, 30 min, 60% of peak workload, W) and a control session in randomized order. RMSSD, high and low-frequency power of RR intervals, and BP were measured at rest and 30-60 min after interventions. The relative reproducibility was assessed by the intraclass correlation coefficient (ICC) and 95% confidence interval (95% CI). The absolute reproducibility was evaluated using the coefficient of variation (CV%). HRV indices revealed moderate-to-excellent reproducibility at rest (ICC 0.81-0.86; 95% CI 0.53-0.95) but not after exercise (ICC -0.06 to 0.60; 95% CI -1.85 to 0.85). Systolic BP had a good-to-excellent reproducibility before (ICC 0.93; 95% CI 0.81-0.98, CV% 4.2) and after exercise (ICC 0.93; 95% CI 0.81-0.97, CV% 4.2). The reproducibility of HRV indices is poor after exercise in young participants. However, the reproducibility of BP is excellent at rest and after aerobic exercise.
智能手表和家用血压设备使得心率变异性 (HRV) 和血压的使用变得简便，可用于识别急性运动训练后使用者的恢复状态。健康年轻参与者在运动后 HRV 和血压的可重复性尚不清楚。18 名参与者（年龄 27±6 岁，女性 n=8）以随机顺序进行了测试和重复有氧运动（骑自行车，30 分钟，60%的峰值工作量，W）和对照测试。在干预后 30-60 分钟和休息时测量 RMSSD、RR 间期的高频和低频功率以及血压。用组内相关系数（ICC）和 95%置信区间（95%CI）评估相对可重复性，用变异系数（CV%）评估绝对可重复性。HRV 指标在休息时具有中等至极好的可重复性（ICC 0.81-0.86；95%CI 0.53-0.95），但运动后无（ICC -0.06 至 0.60；95%CI -1.85 至 0.85）。收缩压在运动前（ICC 0.93；95%CI 0.81-0.98，CV%4.2）和运动后（ICC 0.93；95%CI 0.81-0.97，CV%4.2）具有良好至极好的可重复性。在年轻参与者中，运动后 HRV 指标的可重复性较差。然而，血压在休息和有氧运动后的可重复性非常好。
