Dynamic balance test will be evaluated by the functional reach test. The participant will be instructed to stand next to a wall and position the arm that is closer to the wall at 90 degrees of shoulder flexion. The assessor instructs the participant to "Reach as far as you can forward without taking a step." The distance (cm) from the start to end position at the middle fingertip will be measured.

Walking ability test will be measured by the 10 meter walk test. Participant will be asked to walk on a 14 meters walkway at their comfortable speed. The time for the middle 10 meters will be recorded and walking speed (m/s) will be calculated.

Dominant hand grip (kg) will measured by a dynamometer. Participants will stand with their arms down by their sides. They will squeeze the dynamometer with maximum isometric effort, which is maintained for 6 seconds.

Lower limbs strength will be assessed by the Five Times Sit to Stand. Participants will be asked to sit on the chair with arms folded across their chest, and stand up and sit down as quickly as possible for 5 times. The time (s) to complete the task will be recorded.

Function ability test will be determined by the timed up and go test (TUG). Participants will be asked to rise from a chair, walk three meters, turn around, walk back to the chair, and sit down. The time (s) to complete the task will be recorded.

Cognitive function will be evaluated by the Montreal Cognitive Assessment (MoCA), which covers visuospatial abilities, short-term memory recall task, multiple aspects of executive functions, attention, concentration, and working memory. The total score is 30 and cut-off point is 26. Score less than 26 indicates mild cognitive impairment.

Mini-Mental State Examination(MMSE) is used extensively in clinical and research settings to measure cognitive impairment, covering attention, calculation, recall, language, ability to follow simple commands and orientation. It is commonly used in medicine and allied health to screen for dementia; used to estimate the severity and progression of cognitive impairment and to follow the course of cognitive changes in an individual over time; thus making it an effective way to document an individual's response to treatment.

Fear of falling will be measured by the Falls Efficacy Scale International(FES). The FES rated each daily task from no confident at all to completely confident. The total score between 16 and 64, and the score more than 28 indicates higher level of fear of falling.

The confidence of balance will test by Activities-specific Balance and Confidence (ABC) Scale. The ABC Scale is a 16-item questionnaire. Each item is rated from 0% (no confidence) to 100% (complete confidence) by all participants. The higher score, the more confidence they have.

Depression, anxiety and stress will be assessed by the Depression Anxiety and Stress(DASS-21). It is a self-reported scale designed to measure the negative emotional states of depression, anxiety and stress. The higher score indicates the increased severity of symptoms.

Sarcopenia will be screened by the SARC-F including how much difficulty do you have in lifting and carrying 10 pounds, how much difficulty do you have walking cross a room, how much difficulty do you have transferring from a chair or bed, how much difficulty do you have climbing a flight of 10 stairs, and how many times have you fallen in the past year. The score more than 4 indicates high risk of sarcopenia.

Frailty will be assessed by the Fried frailty phenotype. It is a yes-no model based on five items including physical inactivity, low muscle strength, slow gait speed, exhaustion/ fatigue and weight loss. Each item is scored as 0 (no) or 1 (yes). The score of greater than 3 indicates frailty.

Basic activities of daily living will be measured by the Barthel Index. It is an ordinal scale used to measure performance in activities of daily living (ADL). Ten variables describing ADL and mobility are scored, a higher number being a reflection of greater ability to function independently following hospital discharge. Time taken and physical assistance required to perform each item are used in determining the assigned value of each item. The Barthel Index measures the degree of assistance required by an individual on 10 items of mobility and self care ADL. The score of 0-20 indicates "total" dependency, 21-60 indicates "severe" dependency, 61-90 indicates "moderate" dependency, and 91-99 indicates "slight" dependency.

Instrumental activities of daily living (IADL) will be measured by the Lawton Instrumental Activities of Daily Living Scale which assesses a person's ability to perform tasks such as using a telephone, doing laundry, and handling finances. It contains eight items, with a summary score from 0 (low function) to 8 (high function).

The quality of life will be assessed by the Control, Autonomy, Self-Realization and Pleasure (CASP-19), which has 4 subscales and 19 items in total. A 4-point Likert scale is used including "often", "sometimes", "not often" and "never". The higher score indicates the better quality of life.

Physical Activity will be examined by the International Physical Activity Questionnaire (IPAQ)-Short Form. Participants will be asked about their duration (in minutes) and frequency (days) when performing four specific types of activity: walking, moderate intensity, vigorous intensity and sitting.

Participants will be asked whether they have been in contact with family or friends in the past six months. According to the scale of different networks, the frequency of interaction and the degree of closeness, interpersonal relationships and social support networks can be determined.