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Table 2 Characteristics of study participants of Study 2 (mean [SD])

From: A proper reference metabolic equivalent value to assess physical activity intensity in Japanese female nurses

  All 25≤ age <30 y 30≤ age <40 y 40 ≤ age <50 y 50 ≤ age <60 y 60 ≤ age <70 y
(n = 30,937) (n = 490) (n = 13,553) (n = 11,547) (n = 5,093) (n = 254)
Age (years) 41.3 (7.8) 27.4 (1.4) 34.5 (2.8) 44.2 (2.9) 53.1 (2.6) 61.8 (2.2)
BMI (kg/m2) 21.8 (2.9) 20.3 (2.6) 21.1 (2.8) 22.2 (2.8) 22.8 (2.8) 22.7 (2.8)
Hours of sleep (hr/day) 6.5 (0.9) 6.3 (1.0) 6.5 (1.0) 6.4 (0.9) 6.4 (0.9) 6.5 (0.9)
Hours of working (hr/week) 39.6 (13.0) 39.9 (13.4) 40.3 (12.8) 39.4 (13.1) 38.5 (12.9) 34.0 (13.9)
Sitting for working (hr/week) 8.2 (9.0) 7.9 (8.1) 7.0 (7.4) 8.2 (9.1) 11.0 (11.7) 13.6 (12.8)
Standing for working (hr/week) 17.1 (14.0) 15.9 (13.1) 17.6 (14.0) 17.0 (14.0) 16.1 (14.1) 11.8 (12.9)
Walking for working (hr/week) 12.6 (12.5) 13.7 (12.0) 13.6 (12.6) 12.5 (12.6) 10.3 (11.9) 7.8 (10.6)
Heavy work (hr/week) 1.8 (3.3) 2.5 (3.7) 2.1 (3.5) 1.7 (3.2) 1.2 (2.8) 0.8 (2.6)
Light physical activity (min/week) 113.2 (115.2) 88.9 (86.1) 104.2 (110.4) 115.3 (114.7) 132 (125.8) 161.8 (147.5)
Moderate physical activity (min/week) 21.9 (61.0) 25.1 (59.9) 19.6 (56.0) 20.6 (60.4) 29.5 (71.7) 41.0 (92.6)
Vigorous physical activity (min/week) 2.3 (18.4) 4.3 (23.1) 2.5 (19.1) 1.9 (16.2) 2.7 (20.7) 1.9 (16.5)