Pelvic Floor Muscle Training (PFMT) is the basis of conservative treatment in women with SUI. In systematic reviews, PFMT was recommended as a first option for treatment of SUI. The aim of PFMT is to improve sphincter activity and increase the support of bladder and urethra. Recommendations regarding the prevention and treatment of SUI with PFMT include Knack maneuver (the conscious contraction of the pelvic floor before and during the abdominal pressure increases); pelvic floor exercises to enhance the structural support and endurance of pelvic floor muscles; adding transversus abdominis contraction; and functional rehabilitation.It was reported that the progressive overload principle should be considered to improve the muscle strength and endurance. According to this principal, resistance against to movement, duration and/or frequency should be increased to obtain the optimal response. There are a lot of methods to run a muscle or muscle group based on the progressive overload principal. These are adding resistance or weight, increasing the duration and number of contraction, changing the type of exercise and the range of movement. In the literature, it was reported that special vaginal or rectal tools, vaginal cones or tampons might be used to establish resistance during the pelvic floor muscle exercises.the use of cones in a different way may provide extra benefit for patients: patients can be instructed to perform pelvic floor muscle contraction and try to pull the cone or the other tools out of the vagina. In this study, investigators preferred to use vaginal tampons since pulling the cone out of the vagina cause the elimination of the weight of the cone. Vaginal tampons are also sterile, hygienic, and single use. There is no study investigates the effects of vaginal tampon exercises in the literature. Therefore, the aim of this study is to investigate the effect of the vaginal tampon training adding to PFMT on symptoms of the urinary incontinence, the strength and the endurance of pelvic floor muscles and the quality of life.