Table 1.
Baseline characteristics of UK Biobank participants (n = 57,726), participants with 7 day accelerometer information (n = 12,986), participants with non-commute travel information (n = 44,998), and participants with commute travel information (n = 23,999); all study participants resided within Greater London administrative boundaries at study baseline (2006–2010).
| Main Study Participants (n = 57,726) | Participants with Accelerometer Information (n = 12,986) | Participants with Non-Commute Travel Information (n = 44,998) | Participants with Commute Travel Information (n = 23,999) | |
|---|---|---|---|---|
| Age at baseline (years) | ||||
| Mean (SD) | 56.0 (8.23) | 56.1 (8.01) | 56.0 (8.26) | 52.7 (7.34) |
| Sex | ||||
| Female | 32,141 (55.7%) | 7672 (59.1%) | 25,015 (55.6%) | 12,925 (53.9%) |
| Male | 25,585 (44.3%) | 5314 (40.9%) | 19,983 (44.4%) | 11,074 (46.1%) |
| Average total household income before tax (£) | ||||
| Less than 18,000 | 8925 (15.5%) | 1309 (10.1%) | 6907 (15.3%) | 1830 (7.6%) |
| 18,000 to 30,999 | 10,106 (17.5%) | 2162 (16.6%) | 7891 (17.5%) | 3985 (16.6%) |
| 31,000 to 51,999 | 11,933 (20.7%) | 3054 (23.5%) | 9392 (20.9%) | 5962 (24.8%) |
| 52,000 to 100,000 | 12,044 (20.9%) | 3480 (26.8%) | 9351 (20.8%) | 6643 (27.7%) |
| Greater than 100,000 | 5794 (10.0%) | 1748 (13.5%) | 4500 (10.0%) | 3219 (13.4%) |
| Missing | 8924 (15.5%) | 1233 (9.5%) | 6957 (15.5%) | 2360 (9.8%) |
| Index of Multiple Deprivation (small-area level) | ||||
| Low deprivation | 18,239 (31.6%) | 4823 (37.1%) | 14,256 (31.7%) | 7191 (30.0%) |
| Medium deprivation | 25,191 (43.6%) | 5740 (44.2%) | 19,582 (43.5%) | 10,667 (44.4%) |
| High deprivation | 14,296 (24.8%) | 2423 (18.7%) | 11,160 (24.8%) | 6141 (25.6%) |
| IPAQ activity group | ||||
| Low | 8055 (14.0%) | 1713 (13.2%) | 6229 (13.8%) | 3419 (14.2%) |
| Moderate | 21,011 (36.4%) | 5041 (38.8%) | 16,508 (36.7%) | 9059 (37.7%) |
| High | 18,934 (32.8%) | 4594 (35.4%) | 14,744 (32.8%) | 7981 (33.3%) |
| Missing | 9726 (16.8%) | 1638 (12.6%) | 7517 (16.7%) | 3540 (14.8%) |
| Achieved UK physical activity recommendations via MVPA and walking 1 | ||||
| Yes | 40,050 (69.4%) | 9652 (74.3%) | 31,330 (69.6%) | 16,984 (70.8%) |
| No | 7936 (13.7%) | 1696 (13.1%) | 6138 (13.6%) | 3471 (14.5%) |
| Missing | 9740 (16.9%) | 1638 (12.6%) | 7530 (16.7%) | 3544 (14.8%) |
| Achieved UK physical activity recommendations via MVPA only 1 | ||||
| Yes | 25,975 (45.0%) | 6294 (48.5%) | 20,222 (44.9%) | 10,657 (44.4%) |
| No | 22,025 (38.2%) | 5054 (38.9%) | 17,259 (38.4%) | 9802 (40.8%) |
| Missing | 9726 (16.8%) | 1638 (12.6%) | 7517 (16.7%) | 3540 (14.8%) |
| 7 day accelerometer: minutes spent doing MVPA (≥125 mg) | ||||
| Mean (SD) | - | 75.8 (36.1) | - | - |
| 7 day accelerometer: minutes spent doing moderate activity (≥125 mg and <425 mg) | ||||
| Mean (SD) | - | 71.9 (33.4) | - | - |
| 7 day accelerometer: minutes spent doing vigorous activity (≥425 mg) | ||||
| Mean (SD) | - | 3.93 (5.62) | - | - |
| Non-commuting transport | ||||
| Car/motor vehicle | 25,084 (43.5%) | 5764 (44.4%) | 25,084 (55.7%) | 14,021 (58.4%) |
| Cycle | 1017 (1.8%) | 296 (2.3%) | 1017 (2.3%) | 676 (2.8%) |
| Walk | 11,931 (20.7%) | 2929 (22.6%) | 11,931 (26.5%) | 5761 (24.0%) |
| Public transport | 6966 (12.1%) | 1160 (8.9%) | 6966 (15.5%) | 3474 (14.5%) |
| Missing | 12,728 (22.1%) | 2815 (21.7%) | 0 (0%) | 67 (0.3%) |
| Commuting transport 2 | ||||
| Car/motor vehicle | 11,722 (20.3%) | 2576 (19.8%) | 11,679 (26.0%) | 11,374 (47.4%) |
| Cycle | 1094 (1.9%) | 326 (2.5%) | 1093 (2.4%) | 1077 (4.5%) |
| Walk | 4748 (8.2%) | 1340 (10.3%) | 4740 (10.5%) | 4639 (19.3%) |
| Public transport | 7119 (12.3%) | 1570 (12.1%) | 7098 (15.8%) | 6909 (28.8%) |
| Missing | 33,043 (57.3%) | 7174 (55.3%) | 20,388 (45.3%) | 0 (0%) |
1 UK physical activity guideline recommendations (150 MET minutes per week) [24]. MVPA = moderate-vigorous physical activity. 2 Participants who commute to work at least once per week.