Usual Care Activities will be provided by the elderly community center such as dementia or caregiver supporting service. They will be allowed to use the regular service provided such services are not related to physical activity or exercise training.

supplementing the FS by providing more comprehensive coverage to capture frailty severity (e.g., functional independence and performance, general health status, mood) on a continuous scale.

supplementing the FS by providing more comprehensive coverage to capture frailty severity (e.g., functional independence and performance, general health status, mood) on a continuous scale.

combing a balance test, gait velocity and chair stand to reflect the functional capacity of older adults.21 Its score range is 0-12 in an ascending trend toward increased functional status.The SPPB has good predictive validity against functional decline, rehospitalization and mortality in older adults.

combing a balance test, gait velocity and chair stand to reflect the functional capacity of older adults.21 Its score range is 0-12 in an ascending trend toward increased functional status.The SPPB has good predictive validity against functional decline, rehospitalization and mortality in older adults.

combing a balance test, gait velocity and chair stand to reflect the functional capacity of older adults.21 Its score range is 0-12 in an ascending trend toward increased functional status.The SPPB has good predictive validity against functional decline, rehospitalization and mortality in older adults.

combing a balance test, gait velocity and chair stand to reflect the functional capacity of older adults.21 Its score range is 0-12 in an ascending trend toward increased functional status.The SPPB has good predictive validity against functional decline, rehospitalization and mortality in older adults.

capturing mobility level of relatively independent prefrail older adults in everyday activities. It assesses the level of mobility at five life-space levels in the past 4 weeks: living room other than the bedroom, ii) outside the house, iii) the neighborhood (within 800m of home), iv) outside the neighborhood (within 8km) and v) outside the town (beyond 16km). Example locations representing various distances from subjects' homes will be provided to facilitate the responses. The LSA-C has reliability of 0.88, with good criterion and construct validity.

capturing mobility level of relatively independent prefrail older adults in everyday activities. It assesses the level of mobility at five life-space levels in the past 4 weeks: living room other than the bedroom, ii) outside the house, iii) the neighborhood (within 800m of home), iv) outside the neighborhood (within 8km) and v) outside the town (beyond 16km). Example locations representing various distances from subjects' homes will be provided to facilitate the responses. The LSA-C has reliability of 0.88, with good criterion and construct validity.

capturing mobility level of relatively independent prefrail older adults in everyday activities. It assesses the level of mobility at five life-space levels in the past 4 weeks: living room other than the bedroom, ii) outside the house, iii) the neighborhood (within 800m of home), iv) outside the neighborhood (within 8km) and v) outside the town (beyond 16km). Example locations representing various distances from subjects' homes will be provided to facilitate the responses. The LSA-C has reliability of 0.88, with good criterion and construct validity.

assessing Health-Related Quality of Life and generating the utility score for Cost-Effectiveness Analysis. It comprises a 5-level response set (5-L), including mobility, self-care, usual activities, pain/discomfort and anxiety/depression, and a 0-100 visual analogue scale to measure perceived health.

assessing Health-Related Quality of Life and generating the utility score for Cost-Effectiveness Analysis. It comprises a 5-level response set (5-L), including mobility, self-care, usual activities, pain/discomfort and anxiety/depression, and a 0-100 visual analogue scale to measure perceived health.

assessing Health-Related Quality of Life and generating the utility score for Cost-Effectiveness Analysis. It comprises a 5-level response set (5-L), including mobility, self-care, usual activities, pain/discomfort and anxiety/depression, and a 0-100 visual analogue scale to measure perceived health.

assessing Health-Related Quality of Life and generating the utility score for Cost-Effectiveness Analysis. It comprises a 5-level response set (5-L), including mobility, self-care, usual activities, pain/discomfort and anxiety/depression, and a 0-100 visual analogue scale to measure perceived health.

will be monitored for a period of 32 weeks via the Hospital Authority Clinical Management System. Information on the date of admission, total length of stay and index diagnosis of admission will be retrieved. The research nurse will also ask the subjects about admissions to private hospitals.

will be monitored for a period of 32 weeks via the Hospital Authority Clinical Management System. Information on the date of admission, total length of stay and index diagnosis of admission will be retrieved. The research nurse will also ask the subjects about admissions to private hospitals.

will be monitored for a period of 32 weeks via the Hospital Authority Clinical Management System. Information on the date of admission, total length of stay and index diagnosis of admission will be retrieved. The research nurse will also ask the subjects about admissions to private hospitals.

will be monitored for a period of 32 weeks via the Hospital Authority Clinical Management System. Information on the date of admission, total length of stay and index diagnosis of admission will be retrieved. The research nurse will also ask the subjects about admissions to private hospitals.