Inclusion Criteria:  Body mass index percentile equal to or greater than the 95th percentile All had no previous history of strength or balance training or involvement in competitive sports emphasizing muscular strength or balance. All participants had balance deficiency and mobile flat foot.  Exclusion Criteria:  Previous injury to the lower limb required medical care. Confounding conditions, such as a deformity of or surgery in the lower limb. visual impairment, or neuromuscular disorders. engagement in obesity treatment programs, three months prior to the study.