The study is to evaluate the feasibility of the NLA tool, a combined assessment of nutritional and physical functional status, to provide personalized advice for the independence and mobility of elderly.

Inclusion Criteria:

1. aged between 65 and 90 years,
2. able to walk with or without walking aid,
3. having obtained the subject's written informed consent
4. free of cognitive impairment,

Exclusion Criteria:

1. restricted by a doctor to exercise.
2. unable to carry out performance tests and questionnaires correctly,
3. lower or upper extremity surgery or fracture in the last 3 months
4. having history of neurological disease (e.g., Parkinson disease, stroke) with residual impairment

Free-living or institutionalized elderly (65-90years)