@article{article_369620, title={A novel marker to determine arrhytmia risk in elite cyclists: T peak T end}, journal={Turkish Journal of Sport and Exercise}, volume={19}, pages={313–321}, year={2017}, DOI={10.15314/tsed.369620}, author={Isık, Bulent and Solak Gormus, Z. İsik and Aslan, Huseyin and Iclı, Abdullah and Kurklu, Galip Bilen and Cıftcı, Ozgur and Togan, Turhan}, keywords={Arrhythmia,electrocardiographic predictor,elite cyclists,t peak- t end interval}, abstract={<p class="MsoNormal" style="text-align:justify;line-height:150%;"> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">In athletes, left ventricular hypertrophy is a physiological response </span> <span style="font-size:11px;">upon </span> <span style="font-size:11px;"> routine active sports. </span> </span> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">If the hypertrophic cardiomyopathy is not diagnosed and treated </span> <span style="color:rgb(79,129,189);font-size:11px;">, </span> <span style="font-size:11px;">it can lead to sudden deaths in athletes. </span> <span style="font-size:11px;">Not so much data is known whether or not it is favorable to use of Tp-e values in order to reflect the </span> </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">arrhythmia risks in asymptomatic elite cyclists </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">. </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">The aim of this study is to examine the risks of regular bike sport on potential arrhythmia in healthy active elite cyclists and veterans by using non-invasive cardiac tests. </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">Study groups were: healthy volunteers (group 1, n=28, mean age </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">35.8±4.6 </span> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">), active cyclists (group 2, n=27, mean age 21±3.0), veteran cyclists (group 3, n=27, mean age 29.5±7.1 yr). All groups </span> <span style="font-size:11px;">were underwent </span> <span style="font-size:11px;"> cardiological examinations, 12 derivation ECG records, transthoracic echocardiography investigations. Tp-e interval, Tp-e dispersion, corrected Tp-e interval, QT interval and Tp-e/QT ratio were calculated from ECG records. Tp-e intervals were measured with </span> <span style="font-size:11px;">Tangent method </span> <span style="font-size:11px;">, corrected Tp-e interval </span> <span style="font-size:11px;">were </span> <span style="font-size:11px;"> measured with Bazett formula. </span> </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">Mean Tp-e interval results were as follows according to groups 1, 2, 3; 75.0±9.3, 88.1±7.0, 83.2±8.8 ms, respectively. </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">The </span> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">Tp-e interval, </span> <span style="font-size:11px;">cTp </span> <span style="font-size:11px;">-e interval, Tp- dispersion, QT interval, and SLI values </span> </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">were significantly higher in active cyclists than the veteran cyclists and the control group (p </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">< </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">0.05). </span> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">Both cyclist groups had also </span> <span style="font-size:11px;">significantly higher Tp-e interval </span> <span style="font-size:11px;">, </span> <span style="font-size:11px;">cTp </span> <span style="font-size:11px;">-e interval, QT interval, Tp-e/QT, QRS time and SLI values than the control group (p<0.05). Furthermore, there were </span> </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">significant differences in </span> <span lang="en-us" style="font-size:8pt;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us"> <span style="font-size:11px;">Tp-e interval, </span> <span style="font-size:11px;">cTp </span> <span style="font-size:11px;">-e interval, Tp-e dispersion, QT interval and SLI values </span> </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-family:’Palatino Linotype’, serif;" xml:lang="en-us">between the active and veteran cyclists (p </span> <span lang="en-us" style="font-size:11px;line-height:115%;font-fa}, number={3}, publisher={Selcuk University}