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Table 1 Characteristics of the study population by the MVPA categories at baseline

From: Dose-response association between device-measured physical activity and incident dementia: a prospective study from UK Biobank

 

Not meeting the recommendations

Meeting the recommendations

 

< 300 MET/min/week

300–599 MET/min/week

600–899 MET/min/week

900–1199 MET/min/week

≥ 1200 MET/min/week

Socio-demographics

  

Total n (%)

727 (0.9)

2351 (2.8)

5438 (6.4)

7073 (8.3)

69,265 (81.6)

Age at PA assessment (years), mean (SD)

69.0 (5.8)

68.0 (6.0)

66.6 (6.6)

65.3 (7.0)

61.5 (7.8)

Sex (female), n (%)

396 (54.5)

1190 (50.6)

2945 (54.2)

3900 (55.1)

38,905 (56.2)

Deprivation, n (%)

     

 Lower

234 (32.1)

843 (35.9)

1955 (36.0)

2618 (37.0)

26,193 (37.8)

 Middle

236 (32.5)

768 (32.7)

1904 (35.0)

2574 (36.4)

23,798 (34.4)

 Higher

257 (35.4)

740 (31.4)

1579 (29.0)

1881 (26.6)

19,274 (27.8)

Ethnicity, n (%)

     

 White

713 (98.1)

2310 (98.3)

5307 (91.6)

6913 (97.7)

67,010 (96.7)

 Others

14 (1.9)

41 (1.7)

131 (2.4)

160 (2.3)

2255 (3.3)

Educational attainment, n (%)

     

College/university degree

268 (36.9)

819 (34.8)

2034 (37.4)

2726 (38.5)

30,712 (44.4)

A-levels

94 (12.9)

265 (11.3)

677 (12.5)

965 (13.6)

9214 (13.3)

O-levels

148 (20.4)

498 (21.2)

1186 (21.8)

1518 (21.5)

14,153 (20.4)

CSEs

11 (1.5)

70 (2.9)

171 (3.1)

241 (3.4)

2935 (4.2)

NVQ, HND, HNC or equivalent

48 (6.6)

187 (8.0)

346 (6.4)

432 (6.1)

3617 (5.2)

Other professional qualification

49 (6.7)

171 (7.3)

340 (6.2)

429 (6.1)

3369 (4.9)

None of the above

109 (15.0)

341 (14.5)

684 (12.6)

762 (10.8)

5265 (7.6)

Lifestyle

Smoking status, n (%)

     

 Never

316 (43.5)

1103 (46.9)

2786 (51.2)

3841 (54.3)

40,231 (58.1)

 Previous

305 (42.0)

966 (41.1)

2125 (39.1)

2700 (38.2)

24,649 (35.6)

  Current

106 (14.5)

282 (12.0)

527 (9.7)

532 (7.5)

4385 (6.3)

Alcohol frequency intake, n (%)

     

 Daily or almost daily

164 (22.6)

495 (21.1)

1262 (23.2)

1606 (22.7)

16,219 (23.4)

 3–4 times a week

109 (15.0)

457 (19.4)

1149 (21.1)

1714 (24.2)

18,894 (27.3)

 Once or twice a week

142 (19.5)

574 (24.4)

1236 (22.7)

1697 (24.0)

17,673 (25.5)

 1–3 times a month

114 (15.7)

293 (12.5)

672 (12.4)

822 (11.6)

7218 (10.4)

 Special occasions only

120 (16.5)

337 (14.3)

718 (13.2)

790 (11.2)

5831 (8.4)

 Never

78 (10.7)

195 (8.3)

401 (7.4)

444 (6.3)

3430 (5.0)

Fruit and vegetables, n (%)

     

 Meet the recommendations

374 (51.4)

1171 (49.8)

2746 (50.5)

3684 (52.1)

38,389 (55.4)

Total fish intake, n (%)

     

 Meet the recommendations

396 (54.5)

1241 (52.8)

2873 (52.8)

3679 (52.0)

35,152 (50.8)

Processed meat, n (%)

     

 Meet the recommendations

481 (66.2)

1553 (66.1)

3611 (66.4)

4859 (68.7)

49,715 (71.8)

Red meat, n (%)

     

 Meet the recommendations

331 (45.5)

1115 (47.4)

2566 (47.2)

3455 (48.8)

36,479 (52.7)

Health status

BMI (kg/m2), mean (SD)

30.2 (6.0)

29.9 (5.8)

28.9 (5.3)

28.1 (5.3)

26.2 (4.2)

BMI categories, n (%)

    

406 (0.6)

Underweight (< 18.5 kg/m2)

6 (0.8)

7 (0.3)

15 (0.3)

30 (0.4)

29,206 (42.2)

Normal weight (18.5–24.9 kg/m2)

121 (16.6)

416 (17.7)

1247 (22.9)

1851 (26.2)

28,557 (41.2)

Overweight (25.0 to 29.9 kg/m2)

262 (36.0)

919 (39.1)

2270 (41.7)

3065 (43.3)

11,096 (16.0)

Obese (≥ 30.0 kg/m2)

338 (46.6)

1009 (42.9)

1906 (35.1)

2127 (30.1)

 

Reaction time (seconds) (log scale)

6.6 (0.2)

6.6 (0.3)

6.6 (0.2)

6.6 (0.2)

6.5 (0.2)

Visual memory  (log scale)

2.4 (0.7)

2.3 (0.7)

2.3 (0.7)

2.3 (0.7)

2.3 (0.7)

Morbidity count, n (%)

     

 None

85 (11.7)

418 (17.8)

1355 (24.9)

2072 (29.3)

30,034 (43.4)

 1

188 (25.9)

694 (29.5)

1793 (33.0)

2365 (33.4)

23,278 (33.6)

 2–3

347 (47.7)

962 (40.9)

1926 (35.4)

2239 (31.7)

14,429 (20.8)

 ≥ 4

107 (14.7)

277 (11.8)

364 (6.7)

397 (5.6)

1524 (2.2)

  1. n, number; SD, standard deviation; PA, physical activity; CSE, certificate of secondary education; NVQ, national vocational qualification; HND, higher national diploma; HNC, higher national certificate; MET, metabolic equivalent tasks