目的 探讨高强度训练对武警战士心律失常的影响。方法 选择128名参加任职强化训练的武警战士为训练组,144名同一部队日常基础训练的战士为对照组,利用动态心电图进行心率、心律失常情况及微伏级T波电交替(microvolt T wave alternans, MTWA)等指标变化的分析。结果 训练组平均心率[(77.15±8.85)次/min]、最快心率[(149.10±17.93)次/min]和最慢心率[(59.67±10.50)次/min]均加快(均P<0.05);室性及房性心律失常的发生率和平均数量有升高的趋势且高于对照组(P<0.05);早晨9:00及最快心率时MTWA均高于对照组(均P<0.05)。结论 高强度训练应激状态下,武警战士发生心律失常的情况增多,心脏自主神经功能异常导致心肌细胞电活动不稳定,是心律失常的重要原因之一。
Abstract
Objective To investigate the effect of high intensity training on arrhythmias in Armed Police soldiers.Methods One hundred and twenty-eight Armed Police soldiers under intensity pre-job training were selected as the training group while another 144 soldiers under normal training served as the control group. The 24-hour Holter data of the two groups was collected before the changes of average heart rate, arrhythmias and MTWA were compared and analyzed.Results In the training group, the average heart rate[(77.15±8.85)次/min], the highest heart rate[(149.10±17.93)次/min] and the lowest heart rate[(59.67±10.50)次/min] were faster than those of the control group(all P<0.05). The incidence of atrial and ventricular arrhythmias and the average number of atrial and ventricular arrhythmias were rising in the training group(P<0.05). Compared with the control group, microvolt T wave alternans of 9 o’clock and the highest heart rate were increased(both P<0.05).Conclusions In stressful situations of high intensity training, Armed Police soldiers suffer from more arrhythmias than usually. The disorder of the autonomic nervous system which leads to myocardial electrical instability is one important cause of arrhythmias.
关键词
武警战士 /
高强度训练 /
应激 /
心律失常 /
微伏级T波电交替
Key words
Armed Police soldiers /
high intensity training /
stress /
arrhythmia /
microvolt T wave alternans
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参考文献
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