Prakken Niek H, Velthuis Birgitta K, Teske Arco J, Mosterd Arend, Mali Willem P, Cramer Maarten J
Department of Radiology, University Medical Center Utrecht, Heidelberglaan, Utrecht, The Netherlands.
Eur J Cardiovasc Prev Rehabil. 2010 Apr;17(2):198-203. doi: 10.1097/HJR.0b013e3283347fdb.
To establish cardiac MRI reference values for endurance athletes and nonathletes, and study the impact of variables related to ventricular volumes and wall-mass.
Three hundred and thirty-six prospectively recruited healthy individuals aged 18-39 years (mean age 26+/-6 years, 46% women) underwent cardiac MRI: 79 elite athletes (exercising >18 h/week), 143 regular athletes (9-18 h/week), and 114 matched nonathletes (< or =3 h/week).
Body surface area corrected right (RV) and left ventricular (LV) end-diastolic volume (EDV ml/m2) and wall mass (g/m2) were significantly higher (P<0.0005) in regular/elite athletes than in nonathletes (nonathlete/regular-athlete/elite-athlete; men RV-EDV 111/136/144, RV-wall mass 12/14/15, LV-EDV 101/123/129, LV-wall mass 48/62/69; women RV-EDV 96/115/118, RV-wall mass 10/13/14, LV-EDV 90/107/107, LV-wall mass 34/46/50). Male sex, body surface area, and training hours/week increase ventricular volume and wall mass. In elite athletes, short-axis RV diameter exceeded 50 mm in 49/16% (men/women), and LV diameter exceeded 60 mm in 55/16% (men/women). Interventricular septal-wall thickness was 13-15 mm in 5% regular and 15% elite male athletes.
Cardiac MRI reference values show increased ventricular volumes, diameters, wall mass, and wall thickness for endurance athletes compared with nonathletes. High training hours/week and male sex result in an increased overlap with standard thresholds for cardiomyopathy. To help prevent inconclusive reports, the 95th percentile reference values can be used as an alternative to standard upper limits used for the general population.
建立耐力运动员和非运动员的心脏磁共振成像（MRI）参考值，并研究与心室容积和心肌质量相关变量的影响。
336名年龄在18 - 39岁（平均年龄26±6岁，46%为女性）的前瞻性招募的健康个体接受了心脏MRI检查：79名精英运动员（每周锻炼>18小时），143名普通运动员（每周9 - 18小时），以及114名匹配的非运动员（每周≤3小时）。
校正体表面积后的右心室（RV）和左心室（LV）舒张末期容积（EDV，ml/m²）以及心肌质量（g/m²）在普通/精英运动员中显著高于非运动员（非运动员/普通运动员/精英运动员；男性RV - EDV为111/136/144，RV - 心肌质量为12/14/15，LV - EDV为101/123/129，LV - 心肌质量为48/62/69；女性RV - EDV为96/115/118，RV - 心肌质量为10/13/14，LV - EDV为90/107/107，LV - 心肌质量为34/46/50）。男性、体表面积以及每周训练时长会增加心室容积和心肌质量。在精英运动员中，短轴RV直径超过50mm的男性/女性比例为49/16%，LV直径超过60mm的男性/女性比例为55/16%。5%的普通男性运动员和15%的精英男性运动员室间隔厚度为13 - 15mm。
心脏MRI参考值显示，与非运动员相比，耐力运动员的心室容积、直径、心肌质量和心肌厚度增加。每周训练时间长和男性会导致与心肌病标准阈值的重叠增加。为帮助避免不确定的报告，第95百分位数参考值可作为一般人群使用的标准上限的替代值。
