AU - عبد المحسن، زينب قحطان AB - The research aimed to prepare special exercises for maximum speed and efficient anaerobic action that works to develop speed and improve skill performance which leads to development of the achievement in running 100m, 200m. Research community is students of fourth stage of the Faculty of Physical Education and Sports Science for women. The research sample was chosen in deliberate way in the lesson arena and field of the fourth stage and the number of 30 students divided into 15 students as experimental group and 15 students as another group. The scientific method is the Experimental method with pre-and post-test. The measurement tools were: Physical test is test that capacity measures to repeat the maximum speed and it is also measures the shuttle speed and anaerobic work efficiency test in addition a special tests in ran 100m, 200m, after the application of tribal tests especial exercises have been applied, the exercises were applied by the researcher and then hold posttest. The Arithmetic average standard deviation, sprains, one sample test, Pearson, correlation coefficient has been used. The research result was: The special exercises had appositive effect on skill performance also has role in developing an achievement in running 100m,200m for students. (Published abstract) http://search.shamaa.org/abstract_en.gif OP - ص ص. 158-173 T1 - تأثير تمرينات خاصة في تطوير القدرة على تكرار السرعة القصوى وكفاءة العمل اللاهوائي وعلاقته بالإنجاز في فعاليتي ركض 100 و200 م [مقال] UL - https://www.iasj.net/iasj/article/149364 النص الكامل (PDF) 1 http://search.shamaa.org/fulltext.gif