BACKGROUND/OBJECTIVES: This study aimed to compare the effects of Xbox Kinect Sports (XKS) regarding Nintendo Switch Sports (NSS) and an inactive control group (CG) on body composition (body fat percentage, BFP; and fat-free mass) and physical performance (maximal isometric handgrip strength, MIHS; 30-s chair stand, 30-S; timed up-and-go, TUG; sit-and-reach; and 2-min step) in physically inactive older females. METHODS: A randomized controlled trial study was conducted with three parallel groups: XKS (n = 13), NSS (n = 14), and CG (n = 16) considering three weekly 60-min sessions for 12 weeks with pre- and post-assessments. RESULTS: A two-factor mixed analysis of variance (ANOVA) model with repeated measures was performed to measure the time x group effect. Multiple comparisons revealed significant differences in BFP (F(2,18) 6.12; p = 0.005; etap2 0.226, large effect), 30-S (F(2,18) 20.7; p = 0.000; etap2 0.496, large effect), TUG (F(2,18) 10.0; p = 0.000; etap2 0.323, large effect), sit-and-reach (F(2,18) 37.3; p = 0.000; etap2 0.640, large effect), and 2-min step (F(2,18) 9.85; p = 0.000; etap2 0.319, large effect) in favor of XKS regarding NSS and CG. The intragroup results only present in XKS a significant decrease in BFP (p = 0.02; d 0.98) and significant improvements in the 30-S (p = 0.000; d 1.88), TUG (p < 0.01; d 2.00), sit-and-reach (p = 0.003; d 2.58), and 2-min step (p = 0.004; d 1.05). CONCLUSIONS: training using XKS significantly decreases BFP and improves 30-S, TUG, sit-and-reach, and 2-min step in physically inactive older females.

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