UNASSIGNED: Handball activity involves cardiac changes and demands a mixture of both eccentric and concentric remodeling within the heart. This study seeks to explore heart performance and @entity299 which influence specific performance in @entity3930 across different age ranges. Forty three players, with a regular training and competitive background in handball separated into three groups aged on average 11.78  0.41 for youth players aka "schools", "elite juniors" 15.99  0.81 and "elite adults" 24.46  2.63 years, underwent echocardiography and ECG examinations. Incremental ergocycle and specific field (SFT) tests have also been conducted. With age and regular training and competition, @entity296 in different age ranges exhibit significant differences in dilatation's parameters between "schools" and "juniors" players, such as the end-diastolic diameter (LVEDD) and the end-systolic diameter of the left ventricle (LVESD), the root of aorta (Ao) and left atrial (LA), while significant increase is observed between "juniors" and "adults" players in the interventricular septum (IVS), the posterior wall thicknesses (PWT) and LV mass index. ECG changes are also noted but NS differences were observed in studied parameters. For incremental maximal test, players demonstrate a significant increase in duration and total work between "schools" and "juniors" and, in total work only, between "juniors" and "seniors". The SFT shows improvement in performance which ranged between 26.17  1.83 sec to 31.23  2.34 sec respectively from "seniors" to "schools". The cross-sectional approach used to compare groups with prior hypothesis that there would be differences in exercise performance and cardiac parameters depending on duration of prior handball practice, leads to point out the early cardiac remodeling within the heart as adaptive change. Prevalence of @entity384 with less @entity1184 remodeling was found from "schools" to "juniors" while a prevalence of @entity1283 with less pronounced chamber dilation remodeling was noted later.

Impact of specific training and competition on @entity296 and function in different age ranges of XXXX .

@entity3930 :: ('MESH:D005834', 'Disease') :: ['male handball players'] @entity296 :: ('MESH:D009202', 'Disease') :: ['myocardial remodeling'] @entity1184 :: ('MESH:D006984', 'Disease') :: ['hypertrophy'] @entity384 :: ('MESH:D002311', 'Disease') :: ['cardiac chamber dilation'] @entity1283 :: ('MESH:D006332', 'Disease') :: ['cardiac hypertrophy'] @entity299 :: ('MESH:D006331', 'Disease') :: ['cardiac remodeling likely to define cardiac parameters']
@entity3930 :: (MESH:D005834,Disease) :: ['male handball players']
