Allen H D, Goldberg S J, Sahn D J, Schy N, Wojcik R
Circulation. 1977 Jan;55(1):142-5. doi: 10.1161/01.cir.55.1.142.
An echocardiographic evaluation of 77 members of a championship childhood swim team showed dimensional variations from normal in most athletes. Cardiac walls were thicker than the 95th percentile of normal: right ventricular anterior wall exceeded the 95th percentile in 100%, interventricular septum in 83% and left ventricular posterior wall in 91%. The left ventricular and left atrial cavities in diastole had mean values at the 50th percentile of normal but showed considerable scatter. The left ventricular cavity in systole had a mean value less than the 5th percentile of normal and also showed wide scatter. The aortic root and the aortic intercusp dimension exceeded the 95th percentile of normal in most subjects, 74% and 77%, respectively. No correlation existed between the coach's estimate of championship ability and echocardiographic wall or chamber sizes. Children who participate extensively in athletic training programs such as swimming may have echocardiograms which are quantitatively different from those of nonathletic younsters.
对一支儿童冠军游泳队的77名队员进行的超声心动图评估显示，大多数运动员的心脏尺寸与正常情况存在差异。心脏壁比正常的第95百分位数厚：右心室前壁超过第95百分位数的占100%，室间隔占83%，左心室后壁占91%。舒张期左心室和左心房腔的平均值处于正常的第50百分位数，但有相当大的离散度。收缩期左心室腔的平均值低于正常的第5百分位数，且离散度也很大。大多数受试者的主动脉根部和主动脉瓣叶间尺寸分别超过正常的第95百分位数，分别为74%和77%。教练对冠军能力的评估与超声心动图测量的心脏壁或腔室大小之间没有相关性。广泛参与游泳等体育训练项目的儿童，其超声心动图在数量上可能与不参加体育活动的青少年不同。
