Mapping sedentary behaviour (MAPS-B) in winter and spring using wearable sensors, indoor positioning systems, and diaries in older adults who are pre-frail and frail: A feasibility longitudinal study. - Rodrigues IB; Tariq S; Kouroukis A; Swance R; Adachi J; Bray S; Fang Q; Ioannidis G; Kobsar D; Rabinovich A; Papaioannou A; Zheng R (PloS one, 2024)