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Strength is the most important variable in the development of swimmers, especially explosive power, because of its effect on starting (sprinting) in the sport of swimming. Therefore, the researcher decided to develop the start of running in swimming by developing the explosive power of swimmers. The problem with the research lies in the lack of use of special exercises that are related to performance by developing strength from the starting platform. The research aims to reveal the effect of some explosive strength exercises on some biokinematic variables in the style of starting a run in swimming, by designing a set of special exercises that are given from the starting platform, in addition to a set of reinforcement exercises in order to raise the level of swimmers at the start . [ABSTRACT FROM AUTHOR]

Copyright of Journal of Sport Sciences / Magallat ulum Al-Riyadat is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Physical Education (20736452) is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Sport Sciences / Magallat ulum Al-Riyadat is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background & Aims: Today, repeated high intensity endurance training is an integral part of the preparation of most team and individual sports, which, if not accompanied by proper recovery during or after physical activity, does not create the necessary adaptations and may Is to harm the athlete's performance under the conditions of competition or training (1, 2). Due to intense repetitive training, if the return to the original state is not done properly, it may cause over-training and injury in the athlete (3). Buffer capacity can be affected by the type of recovery (13). Therefore, in addition to the effect of the type of recovery on physiological factors and tampon capacity, exercise performed by the athlete is also effective in preparing for re-homeostasis and return to pre-workout conditions. However, it has received less attention in various studies. The purpose of this study was to investigate the effect of 8 weeks of aerobic training on the buffering system response to three types of active, passive, and stretching recovery in inactive girls. Methods: Thirty students of Farhangian University (age: 22.49±0.33 years, weight: 68.33±7.31 kg, height: 176.76±8.32 cm and BMI 23.12) performed three types of active, passive, and stretching recovery (n=10) during repeated high-intensity endurance test for one week in a crossover method. voluntarily divided into three groups of 10 to have a repetitive endurance test in a special recovery method including active recovery (running at 50% of maximum heart rate) at 5-minute break intervals between exercise protocols., Passive (sleeping in an open arch) and stretching movements (upper body - lower body) participate (18). Before and immediately after the test, arterial blood samples were taken from the subjects and blood acidity, bicarbonate, carbon dioxide pressure and excess alkali were measured with a gas meter (Techno medica, GASTAT 700 series, Japan). To investigate the effect of different recovery methods between groups. Then, all subjects participated in 8 weeks of aerobic exercise (three sessions per week, 80-65% of maximum heart rate / week). At the end of 8 weeks, similar to the beginning of entering the design, the subjects again underwent a severe repetitive endurance test and participated in their specific restoration methods between stages of the test. Blood samples were taken again before and after the final intense repeated endurance test. At the beginning of the study, the health status and satisfaction of the subjects through a physical fitness questionnaire (22), the necessary conditions for participation in physical activity were examined and their health and readiness to cooperate with the research project was confirmed. During the field operation period, the subjects' food and drug consumption research was controlled as much as possible by presenting a specific and individual diet plan. 8-week endurance training: The first week of the independent variable application course was conducted to familiarize and prepare the subjects psychologically. Then the aerobic exercise program presented in Table 1 was performed for 8 weeks and three sessions per week. After getting acquainted with how to perform the training protocol, all the subjects performed a Repeated high intensity endurance training program including 60 meters running in 30 seconds with 30 seconds of rest 6 times in a row. Then, for 5 minutes, each subject participates in one of the recovery methods under review for 5 minutes. After 5 minutes, the intense endurance test was repeated and at the end of the exercise, the recovery program was performed again. This training program and recovery methods were performed for 4 times. After 8 weeks of endurance training, the same program of Repeated high intensity endurance test was performed in different groups. Blood sampling was performed before and after the Repeated high intensity endurance test, at the beginning of the project and also after 8 weeks of endurance training. At each stage, 5 cc of arterial blood samples were taken by observing all necessary laboratory conditions, including impregnation of insulin syringe with heparin, and for analysis of blood gases in less than 15 minutes, it was transferred to a gasometer and then acidity. Blood, bicarbonate, carbon dioxide pressure, alkali excess and alkaline buffers were examined. It should be noted that all blood samples and tests were performed in the pre)test and post-test stages from 16:00 to 18:00. Results: Two-way ANOVA repeated measure showed that in the pre-test phase, there was no significant difference between the three types of recovery to pre-test for the study variables (P>0.05). In reference to pre-test, the changes in PH, HCO3-, PCO2 after eight weeks' endurance training showed a significant difference for active recovery(P<0.05). There was no significant difference in the effect of endurance training for the three types of recovery to O2-sat, BE and BB (P>0.05). Conclusion: The results of the present study showed that aerobic exercise improves the response of the tampon to three types of active recovery, inactive and stretching movements in inactive girls, among which the effect on active recovery is significant. During intense periodic activity in addition to H + Of lactic acid, most of the carbon dioxide produced by energy metabolism reacts with water to form carbonic acid under the influence of the enzyme carbonic anhydrase (CA). The result of this reaction is then decomposed into H + and -HCO3 and increases the extracellular H + concentration (23, 24). In summary, the present study showed that 8 weeks of intense aerobic exercise improved the tampon capacity of female students, which was more dramatic with active recovery. It seems that the type, intensity and duration of endurance training and types of recovery, as well as various methods of assessing tampon capacity are important in obtaining research results, while athletes enjoy the benefits of active recovery during intense repetitive training.. And this is while in untrained people, they give the same answers to different types of recovery. It seems that high aerobic fitness in trained people and finally strengthening the tampon device is a justification for the results of the present study. Future research by examining the effect of different types of recovery on novice and elite athletes as well as the synergy of sports and recovery exercises can provide more accurate information to coaches and athletes. [ABSTRACT FROM AUTHOR]

Copyright of Al.Qadisiya journal for the Sciences of Physical Education is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Al.Qadisiya journal for the Sciences of Physical Education is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Sport Sciences / Magallat ulum Al-Riyadat is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Physical Education (20736452) is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Dirasat: Educational Sciences is the property of University of Jordan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)