PMID- 34189445 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240402 IS - 2589-5370 (Electronic) IS - 2589-5370 (Linking) VI - 36 DP - 2021 Jun TI - Neighbourhood physical environment, intrinsic capacity, and 4-year late-life functional ability trajectories of low-income Chinese older population: A longitudinal study with the parallel process of latent growth curve modelling. PG - 100927 LID - 10.1016/j.eclinm.2021.100927 [doi] LID - 100927 AB - BACKGROUND: Knowledge of how intrinsic capacity (IC) and neighbourhood physical environment shape functional ability (FA) trajectories in later life remains understudied. We investigated four-year trajectories of IC and their impact on FA trajectories and the association between neighbourhood physical environment and FA trajectories among community-dwelling older adults in Hong Kong, China. METHODS: We conducted a four-wave longitudinal study from 2014 to 2017 in Hong Kong with 2,081 adults aged 65 and above. FA was assessed by The Chinese Lawton Instrumental Activities of Daily Living Scale. We used cognition, affect, locomotion, sensory capacity, and vitality to capture the multiple domains of IC. Neighbourhood physical environment attributes included green space, land use diversity, and availability of facilities, assessed within 200- and 500-meter buffers of respondents' homes. We used the parallel process of latent growth curve model. FINDINGS: IC (Unstandardized coefficient, beta = -0.02, p<0.001) and FA (beta = -0.20, p<0.001) each decreased significantly over time. Individuals with declines in IC experienced a faster decline in FA over time. Green space within a 200-meter buffer (beta = 1.15, p = 0.023), the number of leisure (beta = 0.03, p = .0.043) and public transport (beta = 0.08, p = .0.003) facilities within a 500-meter buffer slowed the rate of FA decline. INTERPRETATION: The level of FA decreased over time in later life. Changes in IC shaped FA trajectories. Increased residential green space and the number of leisure and public transport facilities in the neighbourhood may help slow FA decline over time. FUNDING: The Hong Kong Housing Society. CI - (c) 2021 The Author(s). FAU - Lu, Shiyu AU - Lu S AD - Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, China. FAU - Liu, Yuqi AU - Liu Y AD - Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China. FAU - Guo, Yingqi AU - Guo Y AD - Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China. FAU - Ho, Hung Chak AU - Ho HC AD - Department of Urban Planning and Design, The University of Hong Kong, Hong Kong, China. FAU - Song, Yimeng AU - Song Y AD - Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China. AD - Smart Cities Research Institute, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China. FAU - Cheng, Wei AU - Cheng W AD - Department of Urban Planning and Design, The University of Hong Kong, Hong Kong, China. FAU - Chui, Cheryl Hiu Kwan AU - Chui CHK AD - Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China. FAU - Chan, On Fung AU - Chan OF AD - Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, China. FAU - Webster, Chris AU - Webster C AD - Faculty of Architecture, The University of Hong Kong, Hong Kong, China. FAU - Chiu, Rebecca Lai Har AU - Chiu RLH AD - Department of Urban Planning and Design, The University of Hong Kong, Hong Kong, China. FAU - Lum, Terry Yat Sang AU - Lum TYS AD - Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, China. AD - Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China. LA - eng PT - Journal Article DEP - 20210616 PL - England TA - EClinicalMedicine JT - EClinicalMedicine JID - 101733727 PMC - PMC8219998 COIS- The Authors were supported by the Hong Kong Housing Society to conduct the longitudinal survey. They have no other conflicts to declare. EDAT- 2021/07/01 06:00 MHDA- 2021/07/01 06:01 PMCR- 2021/06/16 CRDT- 2021/06/30 06:47 PHST- 2021/03/17 00:00 [received] PHST- 2021/05/04 00:00 [revised] PHST- 2021/05/10 00:00 [accepted] PHST- 2021/06/30 06:47 [entrez] PHST- 2021/07/01 06:00 [pubmed] PHST- 2021/07/01 06:01 [medline] PHST- 2021/06/16 00:00 [pmc-release] AID - S2589-5370(21)00207-8 [pii] AID - 100927 [pii] AID - 10.1016/j.eclinm.2021.100927 [doi] PST - epublish SO - EClinicalMedicine. 2021 Jun 16;36:100927. doi: 10.1016/j.eclinm.2021.100927. eCollection 2021 Jun.