Table 1.

Study sample characteristics.

	Overall (n = 1352)	Age 50–64 (n = 406)	Age 65–74 (n = 662)	Age ≥ 75 (n = 284)
Age, years	68.6 ± 7.5	60.0 ± 3.4	69.2 ± 2.8	79.2 ± 3.7
Women, %	54	55	54	52
Body mass index, kg/m2	27.6 ± 4.6	27.7 ± 5.1	27.6 ± 4.5	27.1 ± 4.1
Current smoking, %	5	7	5	2
Hypertension, %	56	42	58	71
Diabetes, %	11	7	12	14
Cardiovascular disease, %	12	6	12	19
Cancer, %	13	7	12	24
Physical activity variables
Wear time, min/day  during 6 am-10 pm, a 16 h day	749 ± 71	761 ± 69	747 ± 72	737 ± 71
Sedentary time, % wear time  (standardized to a 16 h day, h)	84.3 ± 6.3 (13.5 ± 1.0)	82.1 ± 6.2 (13.1 ± 1.0)	84.1 ± 6.0 (13.5 ± 1.0)	87.8 ± 5.4 (14.0 ± 0.9)
Light intensity PA, % wear time  (standardized to a 16 h day, h)	13.3 ± 5 (2.1 ± 0.8)	14.7 ± 4.9 (2.4 ± 0.8)	13.6 ± 5.0 (2.2 ± 0.8)	10.8 ± 4.5 (1.7 ± 0.7)
Steps/day	6927 ± 3678	7952 ± 3636	6877 ± 3625	5577 ± 3410
MVPA time, min/day  Mean ± SD and (min, max)	19 ± 22 (0, 254)	25 ± 25 (0, 254)	18 ± 20 (0, 173)	12 ± 17 (0, 96)
Achieved MVPA guidelines (≥150 min/week), %	27	38	25	15
% with < 5 min MVPA per day	27	10	27	50
Physical performance variables
Gait speed, m/s  Mean ± SD and (min, max)	1.17 ± 0.19 (0.47, 1.84)	1.23 ± 0.18 (0.47, 1.84)	1.18 ± 0.18 (0.67, 1.75)	1.08 ± 0.17 (0.71, 1.59)
Chair stands time, s  Mean ± SD and (min, max)	9.9 ± 2.6 (4.4, 29.8)	9.3 ± 2.5 (4.6, 29.8)	9.8 ± 2.4 (4.4, 19.5)	11.2 ± 3.0 (5.1, 25.3)
Hand grip strength for men, kg  Mean ± SD and (min, max)	39.1 ± 8.7 (16, 68)	42.9 ± 9.2 (19, 68)	39.2 ± 7.8 (16, 59)	33.8 ± 6.8 (16, 54)
Hand grip strength for women, kg  Mean ± SD and (min, max)	23.3 ± 5.7 (6, 44)	26.1 ± 5.3 (12, 39)	22.9 ± 5.2 (6, 44)	20.0 ± 5.1 (10, 34)

Abbreviations: physical activity (PA); moderate-to-vigorous physical activity (MVPA); kilograms (kg); meters (m); seconds (s); minutes (min).