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目的:比较体育专业学生优势侧和非优势侧肱动脉内径和内皮功能的差异。方法:非单侧上肢用力型(足球、田径)体育专业学生18名和单侧上肢用力型(排球攻手、网球、乒乓球)体育专业学生13名,应用彩色超声仪测量其心室舒张末期肱动脉前、后内膜之间的垂直距离作为肱动脉内径,分别测定两组对象优势侧和非优势侧肱动脉内径及充血后内径,并以此计算肱动脉血流介导的血管舒张(flow-mediated va-sodilation,FMD),即内皮功能。结果:非单侧型对象优势侧和非优势侧肱动脉内径分别为3.5±0.1mm和3.4±0.1mm(P=0.1059),FMD分别为13.6±0.9%和14.0±1.0%(P=0.5335);单侧型对象优势侧和非优势侧肱动脉内径分别为3.8±0.1mm和3.6±0.1mm(P=0.0276),FMD分别为12.3±0.7%和13.0±1.0%(P=0.5081)。结论:专业训练的优势使用可增大肱动脉内径,而日常生活的优势使用并无此作用。但无论专业训练还是日常生活的优势使用,均不能提升体育专业学生相应肢体的FMD。
Objective: To compare the differences of the inner diameter and the endothelial function of the superior brachial artery and non-dominant side of PE majors. Methods: Eighteen PE majors (non-unilateral upper limbs) and 13 sports majors with unilateral upper limbs (volley attacking hand, tennis and table tennis) were enrolled in this study. The color Doppler was used to measure the end-diastolic brachial artery Before and after the intima of the vertical distance between the brachial artery as the inner diameter of the two groups were measured in the superior and non-dominant side of the brachial artery diameter and the diameter after the congestion, and to calculate brachial artery blood flow-mediated vasodilation (flow- mediated va-sodilation, FMD), endothelial function. Results: The diameters of dominant and non-dominant lateral brachial arteries in non-unilateral subjects were 3.5 ± 0.1 mm and 3.4 ± 0.1 mm respectively (P = 0.1059), and FMD were 13.6 ± 0.9% and 14.0 ± 1.0%, respectively (P = 0.5335) (P = 0.0276), and the FMD were 12.3 ± 0.7% and 13.0 ± 1.0%, respectively (P = 0.5081). The average diameters of the dominant and non-superior side brachial arteries in unilateral subjects were 3.8 ± 0.1mm and 3.6 ± 0.1mm, respectively. Conclusion: The advantages of professional training can increase the diameter of the brachial artery, and the advantages of daily life and no such effect. However, neither the professional training nor the daily life advantage can improve the FMD of PE majors.