Department of Exercise Physiology, College of Sport Sciences and Physical Activity, King Saud University, Riyadh 11451, Saudi Arabia.
Department of Health Sciences and Kinesiology, Biodynamics and Human Performance Center, Georgia Southern University - Armstrong, Savannah, GA 31419, USA.
Int J Environ Res Public Health. 2020 Apr 15;17(8):2719. doi: 10.3390/ijerph17082719.
The aim of this study was to investigate the effect of recreational aerobic physical activity (PA) type and volume on heart rate variability (HRV) in Arab men. This was a retrospective, cross-sectional study, and included men ( = 75, age = 37.6 ± 7.1 years, body mass index (BMI) = 26.7 ± 3.1 kg/m) who were members of a walking group, cycling group, or were inactive controls. Monthly distances from the past three months were obtained from walking and cycling groups, and the volume of PA was classified into three subgroups (high, moderate, low). HRV was measured using a computerized electrocardiographic data acquisition device. R-R interval recordings were performed while participants rested in a motionless supine position. RR intervals were recorded for 15 minutes, and a five-minute segment with minimal ectopic beats and artifacts was selected for HRV analysis. Time-domain parameters included the mean R-R interval, standard deviation of the mean R-R interval (SDNN), and root-mean-squared difference of successive RR intervals (RMSSD). The frequency-domain parameters included high-frequency power (HF), low-frequency power (LF), and LF to HF ratio (LF/HF). Results showed that there were no significant differences between walking, cycling, and control groups for all HRV parameters. Time-domain analyses based on PA volume showed that age-adjusted SDNN for the high-active group was greater than the low-active group ( = 0.03), and RMSSD for the moderate-active group was greater than the control group ( = 0.009). For the frequency domain, LF for the high-active group was greater than the low-active and control groups ( = 0.006), and HF for the moderate-active group was greater than the low-active group ( = 0.04). These data indicate that walking >150 km per month, or cycling >100 km per month at a speed >20 km/h may be necessary to derive cardiac autonomic benefits from PA among Arab men.
本研究旨在探讨阿拉伯男性休闲有氧运动（PA）类型和量对心率变异性（HRV）的影响。这是一项回顾性、横断面研究，纳入了男性（n=75，年龄=37.6±7.1 岁，体重指数（BMI）=26.7±3.1kg/m），他们分别为步行组、骑行组或不活动对照组的成员。从过去三个月中获得步行和骑行组的每月距离，将 PA 量分为三个亚组（高、中、低）。使用计算机化心电图数据采集设备测量 HRV。参与者在静止仰卧位休息时进行 R-R 间期记录。RR 间期记录 15 分钟，选择无异位搏动和伪迹的五分钟片段进行 HRV 分析。时域参数包括平均 R-R 间期、平均 R-R 间期标准差（SDNN）和连续 RR 间期均方根差（RMSSD）。频域参数包括高频功率（HF）、低频功率（LF）和 LF 与 HF 的比值（LF/HF）。结果显示，在所有 HRV 参数方面，步行组、骑行组和对照组之间无显著差异。基于 PA 量的时域分析显示，高活跃组的年龄校正 SDNN 大于低活跃组（p=0.03），中活跃组的 RMSSD 大于对照组（p=0.009）。对于频域，高活跃组的 LF 大于低活跃组和对照组（p=0.006），中活跃组的 HF 大于低活跃组（p=0.04）。这些数据表明，对于阿拉伯男性，每月步行>150 公里或骑行>100 公里且速度>20 公里/小时可能需要从 PA 中获得心脏自主神经益处。
