Table 1 Measures included in the study at each time-point

 Physical activity

Accelerometer 6 days

x

x

x

–

Diary of physical activity 6 days

x

x

x

–

Modified Grimby scale

x

x

x

x

x

[22, 23]

YPAS (standing/walking & lying down/sitting)

x

x

x

x

x

[45]

Unmet physical activity

x

x

x

x

[32]

 Short Physical Performance Battery (SPPB)

Balance, 4 m walking, chair rising

x

x

x

–

[25]

 Mobility disability

Moving outdoors

x

x

x

x

x

[46]

Walking 500 m

x

x

x

x

x

[46]

Walking 2 km

x

x

x

x

x

[46]

Stair climbing

x

x

x

x

x

[46]

Lifting (10 kg)

x

x

x

x

x

[46]

 Self-rated mobility

x

x

x

x

 Life-Space Mobility (LSA)

Within home

x

x (modified)

x

x

x

[26]

Outdoor

x

x (modified)

x

x

x

[26]

Neighborhood

x

x (modified)

x

x

x

[26]

Town

x

x (modified)

x

x

x

[26]

Unlimited

x

x (modified)

x

x

x

[26]

 Impact on Autonomy & Participation (IPA), 41 items

–

x

–

x

x

[27]

 Fear of falling (FES-I), 16 items

x

x

x

x

[28]

 History of falls

during preceding year

during preceding 3 months

during preceding 3 months

during preceding 6 months

 Depressive symptoms (CES-D), 20 items

x

x

x

x

[36]

Pain

Presence of musculoskeletal pain

x

x

x

x

[38]

Pain Interference Subscale from the Brief Pain Inventory (BPI)

x

x

x

x

[29]

 Maximal isometric grip strength

x

x

 Perceived environmental barriers

PENBOM

x

x^a

x

x

[31]

Home environment

x

x

x

x

[47]

 Perceived environmental facilitators

PENFOM

x

x^a

x

x

[31]

Exercise facilities

x

x^a

x

x

Home environment

x

x

x

x

 Barriers to physical activity

Barriers (BOPA)

x

x^a

x

x

[30, 48]

Avoidance of moving outdoors

x

x^a

x

x

[48]

 Health Status

Chronic diseases, current diagnosis (needing hospital care), treatment

^b

 Medication

^b

x

x

x

 Self-rated health

x

x

x

x

 Cognitive impairment

Cognitive status (CERAD)

x

–

–

–

[33, 34]

Executive functions (TMT-A & -B)

x

–

x

–

[35]

 Social contacts and socioeconomic status

x

–

–

–

 Weight, height

x

–

–

–

 Unintended weight loss

x

x

x

x

 Self-rated sensory functions

Vision, hearing

x

–

–

–

[49]

 Standard care & rehabilitation

x

x

x

x

[38]

 Use of social and health services

x

x

x

x

[38]