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目的:探讨新兵首次高强度训练后的心电图变化及其特征。方法:选择426例入伍1个月的男性新兵,随机均分为强化训练组(当日清晨越野跑5km,时间控制在25~30min)和常规训练组(仅参加日常一般队列训练)。两组分别于训练前,训练后0.5h和24h记录常规12导联体表心电图,对比分析两组新兵训练前后心电图的变化。结果:与常规训练组比较,强化训练组训练后0.5h各种心律失常以及心电图改变发生率均显著升高,P<0.05或<0.01;训练后24h,强化训练组窦性心动过速(1.41%比6.57%)、窦性心动过缓(0.47%比5.16%)、频发房性早搏(0.94%比4.69%)、频发室性早搏(1.41%比5.16%)、房室传导阻滞(0.47%比4.23%)和ST-T改变(1.41%比6.10%)发生率仍然显著升高,P<0.05或<0.01。结论:新兵首次5km越野跑可出现心电图异常,包括心律失常和ST-T改变。
Objective: To investigate the changes of electrocardiogram and its characteristics after recruits recruited for the first intensive training. Methods: A total of 426 recruits recruited for 1 month were randomly divided into intensive training group (5km in the early morning and 25-30 minutes in time control) and routine training group (only participating in routine general cohort training). Two groups were recorded before training, training 0.5h and 24h routine 12 lead body surface ECG, comparative analysis of two groups of recruits before and after training ECG changes. Results: Compared with the routine training group, all kinds of arrhythmia and electrocardiogram changes 0.5 h after training were significantly increased (P <0.05 or <0.01); 24h after training, sinus tachycardia (1.41 % Vs 6.57%), sinus bradycardia (0.47% vs 5.16%), frequent atrial premature beats (0.94% vs 4.69%), frequent premature ventricular contractions (1.41% vs 5.16% (0.47% vs. 4.23%) and ST-T changes (1.41% vs. 6.10%) were still significantly higher, P <0.05 or <0.01. CONCLUSIONS: Recruits for the first time in a 5km trail may have abnormal ECGs including arrhythmias and ST-T changes.