[儿童和青少年运动员左心室形态测量参数及功能的变化]

[Changes in morphometric parameters and function of left ventricle in child and adolescent athletes].

作者信息

Bartkeviciene Aldona, Baksiene Dalia

机构信息

Advisory Pediatric Outpatient Department, Klaipeda Children's Hospital, Klaipeda, Lithuania.

出版信息

Medicina (Kaunas). 2007;43(3):251-8.

PMID:17413255

Abstract

UNLABELLED

The aim of the study was to assess the impact of physical load on left ventricular morphometric parameters and function in child and adolescent athletes.

MATERIAL AND METHODS

A total of 143 trained athletes aged 7-17 years and 54 healthy nonathletic children and adolescents aged 8-17 years were involved in this study. The participants were divided into four groups according to the duration of physical activity (training hours per week). Two-dimensional, M-mode, and Doppler echocardiography were used to evaluate cardiac dimensions and function. Absolute parameters and parameters corrected for body surface area were calculated. Left ventricular fractional shortening was calculated as an index of systolic function, and E/A ratio was calculated for evaluation of left ventricular diastolic function.

RESULTS

In 69.9% of athletes, septal and posterior wall thickness, end-diastolic diameter, left ventricular mass, and mass index were statistically significantly higher than in controls. There were no differences in left ventricular end-diastolic diameter and posterior wall thickness corrected for body surface area as well as diastolic E/A ratio between the groups. The fractional shortening in athletes was significantly higher (P<0.01). Interventricular septum thickness, end-diastolic diameter, and left ventricular mass were significantly higher in athletes whose training exceeded 8 hours per week compared to the controls. Left ventricular fractional shortening was significantly higher in athletes training more than 10 hours per week than in controls. Diastolic function index--E/A ratio--did not differ between the groups.

CONCLUSION

Our study demonstrated that echocardiographic parameters of child and adolescent athletes statistically significantly exceeded the parameters of untrained controls. These parameters were dependent on the anthropometric data and physical activity (the duration of training expressed in hours per week).

摘要

未标注

本研究旨在评估体力负荷对儿童和青少年运动员左心室形态学参数及功能的影响。

材料与方法

本研究共纳入143名7 - 17岁的训练有素的运动员以及54名8 - 17岁的健康非运动员儿童和青少年。参与者根据体力活动时长（每周训练小时数）分为四组。采用二维、M型和多普勒超声心动图评估心脏大小和功能。计算绝对参数以及经体表面积校正的参数。计算左心室缩短分数作为收缩功能指标，并计算E/A比值以评估左心室舒张功能。

结果

69.9%的运动员，其室间隔和后壁厚度、舒张末期直径、左心室质量和质量指数在统计学上显著高于对照组。各组间经体表面积校正的左心室舒张末期直径和后壁厚度以及舒张期E/A比值无差异。运动员的缩短分数显著更高（P<0.01）。与对照组相比，每周训练超过8小时的运动员的室间隔厚度、舒张末期直径和左心室质量显著更高。每周训练超过10小时的运动员的左心室缩短分数显著高于对照组。舒张功能指标——E/A比值——在各组间无差异。