Abstract：
OBJECTIVE: Few studies have assessed the prevalence and significance of right bundle branch block in athletes. Aims of this study were to evaluate the prevalence of incomplete right bundle branch block and its correlation with the nature of sports practice and to compare the athlete with right bundle branch block and the one with a normal electrocardiogram.
METHODS: It was a retrospective study of the electrocardiogram and echocardiography of competitive athletes recruited in the medical-sports center of Sousse RESULTS: A total of 554 athletes were included. Mean age was 16.1 ± 2.9 years and 69 % were male. The mean training duration was 5.8 hours per week. The prevalence of incomplete right bundle branch block was 13.9 % (77 cases). Endurance sports were practiced in 71.4 % of cases among subjects with right bundle branch block versus 55.4 % in the rest of the population (p < 0.001). The basal diameter of the right ventricle was larger in athletes with right bundle branch block compared to athletes without right bundle branch block: 28 ± 3.6 mm versus 24 ± 2.4 mm (p < 0.001).
CONCLUSIONS: The results of this study suggest that right bundle branch block is a marker of incomplete right ventricular remodeling. This remodeling represents a form of adaptation to sustained elevation of volumetric load observed mainly in endurance sports.
METHODS: It was a retrospective study of the electrocardiogram and echocardiography of competitive athletes recruited in the medical-sports center of Sousse RESULTS: A total of 554 athletes were included. Mean age was 16.1 ± 2.9 years and 69 % were male. The mean training duration was 5.8 hours per week. The prevalence of incomplete right bundle branch block was 13.9 % (77 cases). Endurance sports were practiced in 71.4 % of cases among subjects with right bundle branch block versus 55.4 % in the rest of the population (p < 0.001). The basal diameter of the right ventricle was larger in athletes with right bundle branch block compared to athletes without right bundle branch block: 28 ± 3.6 mm versus 24 ± 2.4 mm (p < 0.001).
CONCLUSIONS: The results of this study suggest that right bundle branch block is a marker of incomplete right ventricular remodeling. This remodeling represents a form of adaptation to sustained elevation of volumetric load observed mainly in endurance sports.
摘要：
目的：很少有研究评估运动员右束支传导阻滞的患病率和意义。这项研究的目的是评估不完全右束支传导阻滞的患病率及其与运动实践性质的相关性，并比较右束支传导阻滞的运动员和心电图正常的运动员。
方法：这是一项在苏塞医疗体育中心招募的竞技运动员的心电图和超声心动图的回顾性研究。结果：共包括554名运动员。平均年龄为16.1±2.9岁，69%为男性。平均训练时间为每周5.8小时。不完全右束支传导阻滞的患病率为13.9%(77例)。在患有右束支传导阻滞的受试者中，有71.4％的患者进行了耐力运动，而在其余人群中为55.4％（p<0.001）。与没有右束支传导阻滞的运动员相比，右束支传导阻滞的运动员右心室的基础直径更大：28±3.6mm对24±2.4mm（p<0.001）。
结论：本研究结果表明右束支传导阻滞是右心室重构不全的标志。这种重塑代表了一种适应主要在耐力运动中观察到的体积负荷持续升高的形式。
方法：这是一项在苏塞医疗体育中心招募的竞技运动员的心电图和超声心动图的回顾性研究。结果：共包括554名运动员。平均年龄为16.1±2.9岁，69%为男性。平均训练时间为每周5.8小时。不完全右束支传导阻滞的患病率为13.9%(77例)。在患有右束支传导阻滞的受试者中，有71.4％的患者进行了耐力运动，而在其余人群中为55.4％（p<0.001）。与没有右束支传导阻滞的运动员相比，右束支传导阻滞的运动员右心室的基础直径更大：28±3.6mm对24±2.4mm（p<0.001）。
结论：本研究结果表明右束支传导阻滞是右心室重构不全的标志。这种重塑代表了一种适应主要在耐力运动中观察到的体积负荷持续升高的形式。
