| The similarity between the pool 50 -meter freestyle and the enemy of 100 m is the use of sports to his body parts are approximately equal in addition to the use of energy system and one ( system Alfosagaginat ) mainly , either the difference shall be in the concept of the aquatic environment and their impact is different in the resistance, which is characterized by the addition to the lack of sweating ratio , while the practice of the enemy in the air is normal because of the human body adapted to live in such an environment . The foregoing note that should the coach and athlete recruitment and conditioning organs of the body , including the kidneys work career to do the effort of physical and work to keep him on a regular basis , and is characterized by both two events relying on maximum speed and high intensity and this affected indicators kidneys functional like indicators functional Other in the body type of physical effort by the practitioner of sports . "As coaches , we find that people have temporary changes associated with physical activity , as well as physiological changes continuously and permanently ." The process of measuring indicators salts and indices of urea and creatine of indicators that reflect our kidneys work directly and effectively is the significance of these indicators for swimmers is very important , because the proportion of sweating in the water , causing the process of direct pressure on the kidneys work career, unlike the effectiveness of the enemy ( jogging ) Vtdl this event is to increase the proportion of sweating and thus the lack of pressure generated by the kidneys with the help of the sweat glands , which leads to increased blood concentration and through these fundamental differences Arta researchers to study this problem in order to fall into the real character of the work of the kidneys with swimmers 50 -meter freestyle and runners of 100 m , which represents the type of events ran short distances . |