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Table 1 Baseline characteristics of participants according to the dose of leisure-time exercise

From: Associations of leisure-time, occupational, and commuting physical activity with risk of depressive symptoms among Japanese workers: a cohort study

 

Dose of leisure-time exercise

 
 

No exercise

Very low

Low

Medium

High

Very high

P for trenda

No. of participants

17 704

2753

2627

3422

1284

1292

 

Male sex

14 608 (82.5)

2355 (85.5)

2321 (88.4)

3049 (89.0)

1168 (91.0)

1175 (90.9)

<0.001

Age, year

43.1 ± 10.2

40.7 ± 10.6

42.1 ± 10.9

42.7 ± 11.1

43.5 ± 11.0

42.4 ± 12.2

0.28

BMI, kg/m2

23.3 ± 3.4

23.3 ± 3.4

23.5 ± 3.3

23.6 ± 3.1

23.5 ± 3.1

23.3 ± 3.0

0.002

Baseline depression score

18.9 ± 3.7

18.4 ± 3.7

18.2 ± 3.7

18.1 ± 3.7

17.9 ± 3.6

17.6 ± 3.8

<0.001

Smoking

7666 (43.3)

1170 (42.5)

1040 (39.6)

1345 (39.3)

469 (36.5)

483 (37.4)

<0.001

Heavy alcohol drinkingb

1517 (8.6)

188 (6.8)

191 (7.3)

271 (7.9)

120 (9.4)

106 (8.2)

0.91

Married

12 728 (71.9)

1882 (68.4)

1843 (70.2)

2429 (70.1)

941 (73.3)

871 (67.4)

0.02

High job position

2970 (16.8)

397 (14.4)

469 (17.9)

727 (21.2)

307 (23.9)

181 (14.0)

0.005

Shift work

3394 (19.2)

612 (22.2)

439 (16.7)

567 (16.6)

189 (14.7)

232 (18.0)

<0.001

Long overtime work (≥45 h/month)

5736 (32.4)

843 (30.6)

827 (31.5)

1094 (32.0)

365 (28.4)

337 (26.1)

<0.001

Sedentary work

10 284 (58.1)

1554 (56.5)

1599 (60.9)

2174 (63.5)

815 (63.5)

699 (54.1)

0.20

<20 min of walking to and from work

9487 (53.6)

1613 (58.6)

1400 (53.3)

1876 (54.8)

733 (57.1)

730 (56.5)

0.011

Dose of exercise, MET hours per week

0

>0 to < 3.25

3.25 to < 7.5

7.5 to < 16.5

16.5 to < 25.5

≥25.5

 
  1. Data are shown as mean ± standard deviation for continuous variables and number (percentages) for categorical variables
  2. BMI body mass index, MET metabolic equivalent
  3. aP for trend was calculated using linear regression analysis for continuous variables and logistic regression analysis or categorical variables
  4. b ≥ 2 go of Japanese sake equivalent, 1 go of Japanese sake contains approximately 23 g of ethanol