Shahid Beheshti University Journal of Sport and Exercise Physiology 2676-3710 14 2 2021 09 23 Comparison of trained and untrained girls' blood buffering capacity response to three types of recovery during Repeated High-Intensity endurance test Comparison of trained and untrained girls' blood buffering capacity response to three types of recovery during Repeated High-Intensity endurance test 55 66 101796 10.52547/joeppa.14.2.55 FA Mahtab Tavakoli Shahid Bahonar Campus, Faculty of Farhangian University, Hamadan, Iran Seyed Mohamad Marandi Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Esfahan University. Esfahan, Iran Mehdi Kargar Fard Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Esfahan University. Esfahan, Iran 0000-0002-9205-799X Behzad Pakrad Shahid Maghsodi Campus, Faculty of Farhangian University, Hamadan, Iran Arash Dehghan Department of Pathology, Faculty of Medical Science, Hamadan, Iran Journal Article 2020 01 08 <strong>Purpose</strong>: Recovery after intense interval training plays an important role in improving athletic performance, while the type of recovery and exercise background can affect athletic performance. The aim of this study was to compare the Response of blood buffering capacity to three types of recovery during Repeated High-Intensity endurance test in trained and untrained girls' students of Farhangian University.<br /><strong>Methods</strong>: 30 female students of Farhangian University (mean age 22.49 ±.3 (year), weight 68.33 ± 7.31 (kg) and height 176.76 ± 8.32 (cm) were randomly selected in three recovery groups (active: N=10, passive: N=10, Stretching: N=10) randomly. The Subjects underwent three types of recovery during the repeated high-intensity endurance test after evaluating the maximum oxygen consumption according to a specific pattern in a crossover methods, three days in a week. Arterial blood sample were taken measured before and immediately after the test and buffering capacity and carnosine were analyzed by ABG and ELISA techniques. After 8-eight weeks of aerobic exercise (65-80% of maximal heart rate), the test and blood sampling were repeated with the same pre-test and at the same time.<br /><strong>Results</strong>: In untrained girls, only significant difference was found between stretching and active recovery for oxygen saturation, and in trained girls' there was a significant increase in oxygen saturation for active and passive recovery. Significant increase in blood acidity, bicarbonate, base buffers and carnosine was observed in trained girls by active recovery (P ≤ 0.05).<br /><strong>Conclusion</strong>: The results show that the response of buffering capacity to the three types of recovery was significantly higher in trained subjects. Which is more notable with active recovery.<br />  <strong>Purpose</strong>: Recovery after intense interval training plays an important role in improving athletic performance, while the type of recovery and exercise background can affect athletic performance. The aim of this study was to compare the Response of blood buffering capacity to three types of recovery during Repeated High-Intensity endurance test in trained and untrained girls' students of Farhangian University.<br /><strong>Methods</strong>: 30 female students of Farhangian University (mean age 22.49 ±.3 (year), weight 68.33 ± 7.31 (kg) and height 176.76 ± 8.32 (cm) were randomly selected in three recovery groups (active: N=10, passive: N=10, Stretching: N=10) randomly. The Subjects underwent three types of recovery during the repeated high-intensity endurance test after evaluating the maximum oxygen consumption according to a specific pattern in a crossover methods, three days in a week. Arterial blood sample were taken measured before and immediately after the test and buffering capacity and carnosine were analyzed by ABG and ELISA techniques. After 8-eight weeks of aerobic exercise (65-80% of maximal heart rate), the test and blood sampling were repeated with the same pre-test and at the same time.<br /><strong>Results</strong>: In untrained girls, only significant difference was found between stretching and active recovery for oxygen saturation, and in trained girls' there was a significant increase in oxygen saturation for active and passive recovery. Significant increase in blood acidity, bicarbonate, base buffers and carnosine was observed in trained girls by active recovery (P ≤ 0.05).<br /><strong>Conclusion</strong>: The results show that the response of buffering capacity to the three types of recovery was significantly higher in trained subjects. Which is more notable with active recovery.<br />  https://joeppa.sbu.ac.ir/article_101796_54f82b47d76bc088a84b72ebc49a3741.pdf