Background: The recent pandemic of COVID-19 has left a wide range of after-effects on the health of older adults. The effects of the pandemic have been particularly felt in the areas of physical strength, fatigue, and functional performance. Material and methods: Fifty-four participants were allocated into three groups: Tai Chi (TC) attended 4 sessions of 60-min TC training per week for consecutive 12 weeks, Aerobic Training (AT) attended 4 sessions of 60-min aerobic training per week for 12 weeks, and Control (CON) instructed to maintain a daily routine. Hand grip strength (HGS) and Fatigue Severity Scale (FSS) were used to evaluate the participants. Functional performance outcomes were determined The functional performance outcome was determined by The 30-second Chair Stand Test (CST), The 30-second Arm Curl Test (ACT), The 8-feet Up-and-Go test (TUG), and The 2 min steps. Pre-post comparisons of all outcomes in each group and comparisons between groups were analyzed using the ANOVA test with SPSS software.