Unnithan, Viswanath, Beaumont, Alexander ORCID: https://orcid.org/0000-0002-5773-6356, Rowland, Thomas, George, Keith, Stewart, Laura, Sculthorpe, Nicholas, Lord, Rachel and Oxborough, David (2024) The effect of long-term soccer training on left ventricular structure and function in elite male youth soccer players. Scandinavian Journal of Medicine & Science in Sports, 34 (3). e14594.

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Abstract

Aims
Cardiac adaptations in elite, male adolescent youth soccer players have been demonstrated in relation to training status. The time course of these adaptations and the delineation of the influence of volatile growth phases from the training effect on these adaptations remain unclear. Consequently, the aims of the study were to evaluate the impact of 3 years of elite-level soccer training on changes in left ventricular (LV) structure and function in a group of highly trained elite youth male soccer players (SP) as they transitioned through the pre-to-adolescent phase of their growth.

Methods
Twenty-two male youth SP from the highest Level of English Premier League Academy U-12 teams were evaluated once a year for three soccer seasons as the players progressed from the U-12 to U-14 teams. Fifteen recreationally active control participants (CON) were also evaluated over the same 3-year period. Two-dimensional transthoracic echocardiography was used to quantify LV structure and function.

Results
After adjusting for the influence of growth and maturation, training-induced increases in Years 2 and 3 were noted for: LV end diastolic volume (LVEDV; p = 0.02) and LV end systolic volume (LVESV; p = 0.02) in the SP compared to CON. Training-induced decrements were noted for LV ejection fraction (LVEF; p = 0.006) and TDI-S′ (p < 0.001).

Conclusions
An increase in training volume (Years 2 and 3) were aligned with LV volumetric adaptations and decrements in systolic function in the SP that were independent from the influence of rapid somatic growth. Decrements in systolic function were suggestive of a functional reserve for exercise.

Item Type:	Article
Status:	Published
DOI:	https://doi.org/10.1111/sms.14594
Subjects:	Q Science > Q Science (General) Q Science > QP Physiology
School/Department:	School of Science, Technology and Health
URI:	https://ray.yorksj.ac.uk/id/eprint/9575

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