运动员心脏：通过磁共振成像测定男性耐力运动员和非训练个体的左右心室质量与功能

Athlete's heart: right and left ventricular mass and function in male endurance athletes and untrained individuals determined by magnetic resonance imaging.

作者信息

Scharhag Jürgen, Schneider Günther, Urhausen Axel, Rochette Veneta, Kramann Bernhard, Kindermann Wilfried

机构信息

Institute of Sports and Preventive Medicine, University of Saarland, Campus, Building 39.1, 66123 Saarbrücken, Germany.

出版信息

J Am Coll Cardiol. 2002 Nov 20;40(10):1856-63. doi: 10.1016/s0735-1097(02)02478-6.

DOI:10.1016/s0735-1097(02)02478-6

PMID:12446071

Abstract

OBJECTIVES

Athlete's heart represents a structural and functional adaptation to regular endurance exercise.

BACKGROUND

While left ventricular (LV) hypertrophy of the athlete's heart has been examined in many studies, the extent of right ventricular (RV) hypertrophy is still uncertain because of its complex shape and trabecular structure. To examine RV hypertrophy, we used magnetic resonance imaging (MRI) and hypothesized that athlete's heart is characterized by similar LV and RV hypertrophy.

METHODS

The LV and RV mass, volume, and function in 21 male endurance athletes (A) (27 +/- 4 years; 70 +/- 8 kg; 178 +/- 7 cm; maximal oxygen uptake [VO(2)max]: 68 +/- 5 ml/min per kg) and 21 pair-matched untrained control subjects (C) (26 +/- 3 years; 71 +/- 9 kg; 178 +/- 6 cm; VO(2)max: 42 +/- 6 ml/min per kg) were analyzed by MRI (Magnetom Vision 1.5T, Siemens, Erlangen, Germany).

RESULTS

Left ventricular masses: (A: 200 +/- 20 g; C: 148 +/- 17 g) and RV masses (A: 77 +/- 10 g; C: 56 +/- 8 g) differed significantly between the groups (p < 0.001). The LV and RV end-diastolic volumes (EDV) (LV-EDV 167 +/- 28 ml [A]; 125 +/- 16 ml [C]; RV-EDV 160 +/- 26 ml [A]; 128 +/- 10 ml [C]), and stroke volumes (SV) (LV-SV: 99 +/- 18 ml [A], 74 +/- 11 ml [C]; RV-SV: 102 +/- 18 ml [A], 79 +/- 8 ml [C]) were significantly different between the athletes and control subjects (p < 0.001), whereas ejection fractions (EF) (LV-EF: 59 +/- 3% [A]; 59 +/- 6% [C]; RV-EF: 63 +/- 3% [A], 62 +/- 3% [C]) and LV-to-RV ratios were similar for both groups (LV-to-RV mass: 2.6 +/- 0.2 [A], 2.6 +/- 0.3 [C]; LV-to-RV EDV: 1.05 +/- 0.14 [A], 0.99 +/- 0.14 [C]; LV-to-RV SV: 0.98 +/- 0.17 [A], 0.95 +/- 0.17 [C]; LV-to-RV EF: 0.93 +/- 0.07 [A], 0.96 +/- 0.10 [C]).

CONCLUSIONS

Regular and extensive endurance training results in similar changes in LV and RV mass, volume, and function in endurance athletes. This leads to the conclusion that the athlete's heart is a balanced enlarged heart.

摘要

目的

运动员心脏代表了对常规耐力运动的一种结构和功能适应。

背景

尽管许多研究已对运动员心脏的左心室（LV）肥厚进行了检查，但由于右心室（RV）形状复杂且小梁结构特殊，其肥厚程度仍不确定。为了检查右心室肥厚，我们使用了磁共振成像（MRI），并假设运动员心脏的特征是左心室和右心室肥厚程度相似。

方法

通过MRI（德国埃尔兰根西门子公司的Magnetom Vision 1.5T）分析了21名男性耐力运动员（A组）（27±4岁；70±8kg；178±7cm；最大摄氧量[VO(2)max]：68±5ml/min per kg）和21名配对的未经训练的对照受试者（C组）（26±3岁；71±9kg；178±6cm；VO(2)max：42±6ml/min per kg）的左心室和右心室质量、容积及功能。

结果

两组间左心室质量（A组：200±20g；C组：148±17g）和右心室质量（A组：77±10g；C组：56±8g）差异显著（p<0.001）。运动员组和对照组的左心室和右心室舒张末期容积（EDV）（左心室EDV：167±28ml[A组]；125±16ml[C组]；右心室EDV：160±26ml[A组]；128±10ml[C组]）及每搏输出量（SV）（左心室SV：99±18ml[A组]，74±11ml[C组]；右心室SV：102±18ml[A组]，79±8ml[C组]）差异显著（p<0.001），而两组的射血分数（EF）（左心室EF：59±3%[A组]；59±6%[C组]；右心室EF：63±3%[A组]，62±3%[C组]）及左心室与右心室比值相似（左心室与右心室质量比：2.6±0.2[A组]，2.6±0.3[C组]；左心室与右心室EDV比：1.05±0.14[A组]，0.99±0.14[C组]；左心室与右心室SV比：0.98±0.17[A组]，0.95±0.17[C组]；左心室与右心室EF比：0.93±0.07[A组]，0.96±0.10[C组]）。