Abstract
The purpose of this study was to investigate the development of the athlete's heart in 30 male (16.6±1.2 y.) cross-country skiers during five years. During the period 18 skiers (S) increased their training volume while 12 skiers (D) finished or decreased their training volume 2-3 years after the beginning of the study. A control group (C) consisted of 11 physically active non-athletes (16.9±0.4 y.). MANOVA showed group difference (p<0.001) and interaction (p<0.01) in maximum oxygen uptake(S: from 281±19 to 286±22 ml·min-1·kg-2/3, D: from 279±17 to 256±20 ml·min-1·kg-2/3, C: from 216±20 to 222±30 ml·min-1·kg-2/3). Left ventricular end-diastolic diameter (EDD), mean wall thickness (MWT) and left ventricular mass (LVM) were calculated from resting echocardiograms recorded in left lateral position in the beginning of the study and after five years. Table We concluded that the effects of progressively increased training volume were demonstrated in maximal oxygen uptake and in LVM. Detraining induced minor changes in heart dimensions and LVM.
Published Version
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