IRCT201310044549N4 IRCT 2013-10-27 Vice chancellor for research,Semnan University of Medical Sciences Comparing the effect of Local vibration and Sit up exercise on abdominal obesity in the young healthy women Comparing the effect of Local vibration and Sit up exercise on abdominal local fat thickness in the young healthy women 2013-11-06 anticipated 54 Complete https://irct.ir/trial/4855 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: Sampling is convenience and the volunteers randomly are placed in three groups by lottery. N/A obesity. Intervention 1: The local vibration at 30-HZ frequency is conducted for 30 minutes in the local vibration group. The vibrator is directly placed on sides of umbilicus. (on the rectus abdominis muscle. The interventions are done 3 times per week for 12 weeks. Intervention 2: In the abdominal strengthening group, exercise is performed in the way that subjects lie supine with knee bent at 90 degree. They pull the torso upward from lying position as possible as they can and return to start position (spending 3 second for each movement, followed by 1 second holding). Before exercise, flex ion and extension of the cervical and lumbar spine are done for 10 times to warm up. Exercise are performed 3set with 8 to 10 repetitions .The intervention are done 3 times per week for 12 weeks. Intervention 3: In control group no intervention will be done.