Abstract：The purpose of this study was to investigate the effect of 10-week step aerobics exercise (SAE) on functional fitness and gait patterns in postmenopausal women. This was a convenient sampling trial, recruited 32 sedentary healthy postmenopausal women, and randomly assigned them into either exercise group (EG) or control group (CG). The participants in CG maintained their normal daily activities, and the EG participants attended a moderate-intensity SAE program, 3 times per week for 10 weeks. Anthropometric measurements, functional fitness, and gait performance at the preferred walking speed (PWS) and fast walking speed (FWS) were determined before and after experimental period. The results showed that 10 weeks SAE maintained the body weight and body composition in EG with significantly improved functional fitness. However, body weight and chair stand in CG were significantly increased without change in functional fitness . The gait assessment data showed that both groups had no significant change in gait pattern at PWS. However, at FWS, EG showed significantly increased walking speed, and reduced time in temporal variables, while there was no change in the CG. In addition, a significant correlation between post-intervention FWS and functional fitness parameters was noticed. This study concluded that 10-week SAE intervention may have a direct influence on functional fitness and enhances the performance at fast walking speed. (Full text)