Nonlinear Gait Variability and the Role of Cognitive-Physical Exercise in Mitigating Mobility Decline in Institutionalized Older Adults with Cognitive Impairment. - Galrinho, João; Batista, Marco; Gonçalves-Montera, Marta; Matias, Ana Rita; Fernandes, Orlando (Journal of Functional Morphology & Kinesiology, 2026)