D-13 Thematic Poster - Cardiac Thursday, June 2, 2016, 1:00 PM - 3:00 PM Room: 103
Superior peak VO2 values have been noted in pre-pubertal soccer players compared to their recreationally active peers. It is unclear, what the underlying cardiovascular mechanisms are that give rise to this high level of aerobic fitness.
PURPOSE: The aim of the study was to evaluate global markers of systolic and diastolic function in a group of highly-trained, pre-pubertal soccer players during an incremental exercise test.
METHODS: Twenty-two, highly-trained male soccer players (SP) from two professional soccer clubs (age:12.0 +/- 0.3 years) volunteered for the study. Fifteen recreationally active boys (CON), of similar age (age: 11.7 +/- 0.2 years) were also recruited. All boys underwent an incremental cycle ergometer test to exhaustion. Cardiac dimensions were determined using M-mode echocardiography. Doppler ultrasound techniques were used to derive SV. Tissue-Doppler imaging was used to quantify systolic (TDI-Sadj) and diastolic function (TDI-E; TDI-E’adj and E/E’adj) at rest and maximal exercise intensities.
RESULTS: SP demonstrated significantly (p<0.05) greater peak VO2 values than CON (SP:48.0+/-5.0 vs CON: 40.1+/-7.5 mL·kg-1 ·min-1). Some evidence of LV structural remodeling was seen in the SP; allometrically-scaled to body surface area left ventricular end-diastolic volume was larger (p<0.05)in the SP (51.3+/-9.0) compared to CON (44.6+/-5.8 mL·BSA1.5).
CONCLUSION: Factors that augment LV volume appear to be a contributory factor for the superior aerobic fitness of the soccer players. There appears to be no systematic evidence to support functional improvements in cardiac systolic and diastolic function in pre-pubertal soccer players.