الفهرس 
دلالة الفروق بين متوسطات المجموعة المميزة والمجموعة الغير مميزة لبيان معامل الصدق للاختبارات البدنية قيد البحث...............يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
In our modern era, the technological progress witnessed in the field of sports has a vital role as it has contributed in solving many motor problems after studying and analyzing in an attempt to evaluate them by balanced scientific methods through the use of modern means and devices, which in turn detect the errors associated with the technical performance accurately, regardless of the speed of the performance and the taxonomies of its stages. As Biomechanics is one of the most important sciences through which all correct explanations can be given for the way of performing any skill, but rather to highlight the points of strength and weakness of the players’ performance.
Thus, swimming is one of the most important sports that adopted biomechanical analysis in developing the technical performance of swimmers in order to reach progress and keep pace with the wheel of development, which we notice significantly in the percentage of digital progress of world champions in the field of swimming and motor performance. The study of human body movement problems is the same as any study that relies on accurate measurement and mathematical equations to classify information that can only be obtained by kinetic analysis of the players’ performance through the practiced activity
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Among the most prominent of these problems, which effectively affect the development of any sports activity in general and technique in particular, is that information related to human motor performance and the technical information about the various skills through which the performance is understood and the interrelationships between the movements of body parts during this performance are detected. The motor procedures required to achieve this performance are determined with the highest possible efficiency and with the least possible effort.
Wagdy Alfateh and Tariq Fadly (1999) mention that swimming is considered one of the most important water sports that helps in developing the physical, mental and social aspects because of its importance in affecting the various body systems and the capabilities it acquires that help the individual to prepare him in an integrated way and invest his energies at work. It is practiced lovingly by all ages and genders. Ali Zaki and others (2002) indicate that sports physiologists pay great attention to the sport of swimming, through their study of the ways and methods of training that can be used to achieve physiological responses that work to achieve the best results. As a result of the standardized training load, this is the primary means to raise the efficiency and adaptation of the vital organs that enables the swimmer to respond to the performance requirements at a high level.