www.ksmf.org/arhimed   arhimed@ksmf.org   [5/10/2025 9:24:05 AM] http://www.ksmf.org/arhimed/poglej.asp?id=93 Povezanost 24-urnega krvnega tlaka z razvojem športnega srca pri ženskah in moških Avtor: Polona Rogel Mentor: prof.dr. Aleš Žemva, dr.med. Izhodišce. Dolgotrajna športna aktivnost povzroci razvoj športnega srca, za katerega je znacilna razširjena votlina levega prekata in povecana debelina sten ter masa levega prekata. Te spremembe so pri moških veliko pogostejše kot pri ženskih športnicah. Namen. Naš namen je preveriti naslednje hipoteze: 1. Vecja masa levega prekata pri moških športnikih povezana z višjim krvnim tlakom. 2. Vecja masa levega prekata ni povezana z vecjo telesno aktivnostjo pri moških. Metode. Preiskovali smo 15 parov športnih plesalcev, clanov državne reprezentance in 30 kontrolnih oseb (15 moških in 15 žensk). Pri vseh preiskovancih smo izmerili 24-urni krvni tlak in napravili ultrazvok srca ter obremenitveno testiranje na kolesu. Rezultati. Plesalci imajo v primerjavi z plesalkami signifikantno višji indeks mase levega prekata izmerjen s pomocjo M-mode (p < 0.004) in 2-D (p < 0.001), 24-urni krvni tlak (p < 0.003), dnevni sistolicni krvni tlak (p < 0.002), sistolicni krvni tlak po Riva Rocci (p < 0.025). Plesalci so pri obremenitvenem testiranju na kolesu dosegli signifikantno višji sistolicni krvni tlak ob maksimalni obremenitvi (p < 0.004). Multivariantna analiza je pokazala, da indeks mase levega prekata izmerjen z 2D-metodo najbolje napovedujejo maksimalna obremenitev, ki jo je preiskovanec zmožen doseci na kolesu, sistolicni krvni tlak pri maksimalni stopnji obremenitve, 24-urni sistolicni tlak, dnevni sistolicni krvni tlak in krvni tlak izmerjen po Riva Rocci. Sklep. Vecjo maso levega prekata pri moških športnikih lahko deloma razložimo z višjim krvnim tlakom. Razlika v masi levega prekata ni povezana z stopnjo telesne aktivnosti, saj je ta enaka pri obeh clanih plesnega para. «» [Abstract / English version] 24-hour ambulatory blood pressure and athlete's heart in male and female athletes Author: Polona Rogel Mentor: prof.dr. Aleš Žemva, dr.med. Background. Long term athletic traingis associated with an increase in left ventricular diastolic cavity dimensions, wall thickness, and mass. These changes are described as the "athlete's heart". In men athlete's heart is more frequently present than in women. Objectives. We decided to test the following hypotheses: 1. Increased left ventricular mass in male athletes is related to higher blood pressure. 2. Increased left ventricular mass in male athletes is not related to intensity of training. Methods. 15 pairs of national sport dancing team and 30 control subjects (15 males, 15 females), were studied. In all subjects casual and 24-h ambulatory blood pressures, echocardiography and maximal stress testing were performed. Results. Female in comparison to male dancers had significantly lower M - mode (p<0.004) and 2-D left ventricular mass index (p<0.001), 24-h systolic blood pressure (p<0.003), day systolic blood pressure (p<0.002), casual systolic blood pressure (p<0.025) and achieved significantly lower peak systolic blood pressure at stress testing (p<0.004). Multiple stepwise regression analysis showed that the best predictors of 2-D left ventricular mass index are maximal work load and peak exercise systolic blood pressure, 24-h systolic blood pressure, day and casual systolic blood pressure. Conclusions. Lower left ventricular mass index in female dancers can be partly explained by lower systolic blood pressures during 24-h and at exercise.