TY - JOUR ID - 64788 TI - A Comparison of QTc among Elite, Club and Beginner Male Athletes at Rest and in Exhaustive Exercise JO - Journal of Sport Biosciences JA - JSB LA - en SN - 2008-9325 AU - Kashef, Ali Reza AU - GHazaleyan, Frashad AU - shakeri, Nader AD - M.Sc Student of Exercise Physiology, Islamic Azad University, Science and Research Branch, Tehran, Iran AD - . Assistant Professor, Department of Exercise Physiology, Islamic Azad University, Science and Research Branch, Tehran, Iran Y1 - 2017 PY - 2017 VL - 9 IS - 3 SP - 431 EP - 441 KW - club athlete KW - beginner athlete KW - eCG KW - elite athlete KW - QTc time interval DO - 10.22059/jsb.2018.64788 N2 - One of the reasons of sudden death in sport is the prolonged QT interval. The aim of this study was to compare QTc of electrocardiography of elite, club and beginner male athletes. 7 male athletes of canoe national team, 10 male football players of Niroo-E-Zamini club and 10 male non-athlete students were selected as the sample. The mean and SD were as follows: elite subjects: age 22.42±2.43 yrs, height 182.14±4.29 cm, weight 81.28±6.16 kg and BMI 24.53±2.13; club subjects: age 20.30±0.48 yrs, height 177.5±4.27 cm, weight 71.6±6.44 kg and BMI 22.69±1.47; beginner subjects: age 20.20±1.93 yrs, height 176.4±4.71 cm, weight 70.92±7.5 kg and BMI 22.77±2.13. All subjects participated in Bruce protocol until exhaustion. Before and after the Bruce test, their ECG was recorded with ECG Machine. After QTc time interval was calculated, the results were extracted by MANOVA and Scheffe post hoc test. The results showed a significant difference in QTc time interval at rest and exhaustion among the 3 groups (P<0.001). Also, QTc time interval at rest (P<0.001) and exhaustion (P<0.01) significantly increased from beginner to elite athletes. Therefore, it can be concluded that exercise and physical fitness may increase the ventricular depolarization and repolarization and heart function.   UR - https://jsb.ut.ac.ir/article_64788.html L1 - https://jsb.ut.ac.ir/article_64788_2968109dd63111a23d6bc1acf6bc0b19.pdf ER -