Shahid Beheshti University Journal of Sport and Exercise Physiology 2676-3710 8 1 2015 04 21 The Analysis of time to exhaustion in soccer players based on the slop of heart rate change and blood lactate changes in a gradually incremental test The Analysis of time to exhaustion in soccer players based on the slop of heart rate change and blood lactate changes in a gradually incremental test 1175 1180 98740 10.48308/joeppa.2015.98740 FA Journal Article 2016 02 09 <br /><br />Aim: The purpose of this study was to evaluate time to exhaustion analysis in soccer players based on their<br />heart rate changes slope and blood lactate changes in a gradually increasing test. Methodology: the<br />participants in this research project were 20 soccer players of the first division club with an average age of 19<br />±1.58 yr, 179 ±6.26 height cm and 66±8.64 kg weight. Time to exhaustion and blood lactate changes were<br />measured during the incremental ramp test. Likewise during the steps of heating, running ramp protocol and<br />cooling the Subjects Heart rate First Division clubs in the country were the participants in this research<br />project. Laboratory tests increased time to exhaustion, lactate changes during the ramp incremental test were<br />measured. Heart rate at all stages of heating, and cooling ramp protocol run by a Polar heart rate meter and<br />recorded Measurement Was and heart rate threshold and slope changes using Mathematical software and Dmax<br />method for individual subjects were calculated. Running The Kolmogorov Smirnov test and ensuring the<br />availability of the application of parametric statistical test, Pearson correlation coefficients were calculated<br />between the variables. All statistical procedures using SPSS software and survey data at a significance level of<br />0.05 was used. Results: based on results of research the correlation heart rate changes slop were r= - 0.76 with<br />blood lactate and r = - 0.67 with the time to exhaustion. Conclusions: The Research findings showed that,<br />Because of using accurate mathematical methods in Calculating and plotting the Heart rate changes slope,<br />utilizing such heart rate changes slope to measure the fitness of athletes by coaches and athletes is<br />recommended.<br /><br /> <br /><br />Aim: The purpose of this study was to evaluate time to exhaustion analysis in soccer players based on their<br />heart rate changes slope and blood lactate changes in a gradually increasing test. Methodology: the<br />participants in this research project were 20 soccer players of the first division club with an average age of 19<br />±1.58 yr, 179 ±6.26 height cm and 66±8.64 kg weight. Time to exhaustion and blood lactate changes were<br />measured during the incremental ramp test. Likewise during the steps of heating, running ramp protocol and<br />cooling the Subjects Heart rate First Division clubs in the country were the participants in this research<br />project. Laboratory tests increased time to exhaustion, lactate changes during the ramp incremental test were<br />measured. Heart rate at all stages of heating, and cooling ramp protocol run by a Polar heart rate meter and<br />recorded Measurement Was and heart rate threshold and slope changes using Mathematical software and Dmax<br />method for individual subjects were calculated. Running The Kolmogorov Smirnov test and ensuring the<br />availability of the application of parametric statistical test, Pearson correlation coefficients were calculated<br />between the variables. All statistical procedures using SPSS software and survey data at a significance level of<br />0.05 was used. Results: based on results of research the correlation heart rate changes slop were r= - 0.76 with<br />blood lactate and r = - 0.67 with the time to exhaustion. Conclusions: The Research findings showed that,<br />Because of using accurate mathematical methods in Calculating and plotting the Heart rate changes slope,<br />utilizing such heart rate changes slope to measure the fitness of athletes by coaches and athletes is<br />recommended.<br /><br /> https://joeppa.sbu.ac.ir/article_98740_06cf17c6e88ae8e8649deb646463c95b.pdf