Acute Effects of High Intensity Competition on Macroelements and Relationship with Corrected QT Interval

Authors : Alireza KASHEF, Fereshteh SHAHİDİ, Alireza SADEGHİNİKOO

Pages : 458-463

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Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :The purpose of this study is the find the changes of calcium, sodium and potassium ions and relationship with QTc interval in professional athletes during a short duration intense exercise. Thirty-two male athletes insert ignore into journalissuearticles values(age, 26.9±4.7 yrs); competed in 8 minutes high intensity competition. The competition items included: Running on Skillmill for 400 meters; Three-stage deadlifting, bar pulling up, 30-kilogram kettle bell swinging and throwing 20 sand-filled balls. The resting electrocardiogram was recorded in a sitting position for one minute. Venous blood samples were obtained before and immediately after the competition and analyzed for sodium, potassium and calcium. Plasma volume changes were estimated from hemoglobin and hematocrit readings before and after competition. The results showed that the serum calcium insert ignore into journalissuearticles values(p<0.001); and sodium insert ignore into journalissuearticles values(p<0.001); levels significantly increased as a result of intense exercise activities while the serum potassium insert ignore into journalissuearticles values(p<0.001); significantly decreased. After adjusting raw data for plasma volume changes serum calcium, sodium and potassium significantly decreased insert ignore into journalissuearticles values(p<0.001);. No significant relationship between QTc and Ca, Na and K at rest. These results implicated that high-intensity exercise would provoke the change of macroelements and the current data suggest that the Ca, Na and K don’t have relationship with QTc at rest. 
Keywords : Calcium, Potassium, Sodium, Athletes, Sudden cardiac death