The researcher has done a study under title " Effect of using Core Stability training on the defense effectiveness against Waist Turnover in fight position from blow for Wrestlers" Designing a training program by using core stability training for the purpose of Identifying the extent of the training program effect on the strength variables affecting the defense performance against waist turnover for the experimental group individuals, Identifying the effect of the training program on the effectiveness of defense against the waist turnover for the experimental group individuals, individuals the researcher used the experimental method using the experimental design with pre and post measurements on two groups (control and experimental).The research sample was chosen intentionally form the players of Menoufia area team (under the age of 23 years) consisting of (30) wrestlers. The proposed training program by using core stability training has more positive impact on the development of physical variables subject matter of the research for the experimental group, The proposed training program by using core stability training has more positive impact on the effectives of defense against waist turnover for the experimental group.