Technol Health Care. 2021;29(S1):367-376. doi: 10.3233/THC-218035.
The delayed blood pressure recovery (BPR) at post-exercise has been in association with a major risk of cardiovascular disease and death.
The study focused on evaluating the systolic and diastolic blood pressure recovery (SBPR, DBPR) and the autonomic modulation following treadmill exercise in healthy young adults. Although considerable literature had been published about BPR and HRV, the association between BPR and ultra-short-term HRV has not yet been completely described.
Fifteen subjects performed exercise with three different intensities on a treadmill, the speed was 6 km/h, 9 km/h, 12 km/h, respectively. SBP and DBP was measured per 30 s in each trial. The synchronous 5-min electrocardiogram (ECG) signals were recorded and HRV30s parameters including SDNN30s, RMSSD30s, SDNN30s/RMSSD30s, SD130s, SD230s and SD130s/SD230s were calculated every 30 s periods in 5 min ECG signals to match the corresponding BPR.
The intraclass correlation coefficient (ICC) values and the Bland-Altman plots indicated good consistency and repeatability between HRV30s and HRV5min at three post-exercise trials, with most ICC values > 0.75. Besides, SBPR and DBPR generally decreased and returned to the Rest level in 5 mins. The Spearman correlation coefficients showed strong relationships between BPR and HRV30s sympathetic-vagal balance parameters, i.e., ratio SDNN/RMSSD and ratio SD1/SD2.
These observations represented a new insight into the cardiovascular regulation at post-exercise, which could contribute to physical exercise areas in the future.
运动后血压恢复延迟（BPR）与心血管疾病和死亡的风险增加密切相关。
本研究旨在评估健康年轻成年人在跑步机运动后的收缩压和舒张压恢复（SBPR、DBPR）和自主神经调节。尽管已有相当多的文献报道了 BPR 和 HRV，但 BPR 与超短期 HRV 之间的关系尚未完全描述。
15 名受试者在跑步机上以 6km/h、9km/h 和 12km/h 的速度进行三种不同强度的运动。在每次试验中，每 30 秒测量一次 SBP 和 DBP。同步记录 5 分钟心电图（ECG）信号，并计算 HRV30s 参数，包括 SDNN30s、RMSSD30s、SDNN30s/RMSSD30s、SD130s、SD230s 和 SD130s/SD230s，以匹配相应的 BPR。
三次运动后试验中，HRV30s 和 HRV5min 之间的组内相关系数（ICC）值和 Bland-Altman 图表明具有良好的一致性和可重复性，大多数 ICC 值>0.75。此外，SBPR 和 DBPR 通常在 5 分钟内下降并恢复到休息水平。Spearman 相关系数显示 BPR 与 HRV30s 交感神经-迷走神经平衡参数之间存在很强的关系，即 SDNN/RMSSD 比值和 SD1/SD2 比值。
这些观察结果为运动后心血管调节提供了新的见解，这可能有助于未来的体育锻炼领域。
