Table 1.
Baseline characteristics of participants by device-measured sedentary time and moderate to vigorous physical activity, UK Biobank
| High MVPA/ Low ST | High MVPA/ Medium ST |
High MVPA/ High ST |
Medium MVPA/ Low ST | Medium MVPA/ Medium ST |
Medium MVPA/ High ST |
Low MVPA/ Low ST | Low MVPA/ Medium ST |
Low MVPA/ High ST |
|
|---|---|---|---|---|---|---|---|---|---|
| (n = 14,546) | (n = 7,495) | (n = 3,823) | (n = 7,656) | (n = 9,563) | (n = 7,729) | (n = 3,457) | (n = 7,678) | (n = 11,782) | |
| Sedentary time, median hours/day | 9.6 | 10.6 | 11.6 | 9.5 | 10.7 | 12.0 | 9.6 | 10.8 | 12.2 |
| LPA, median min/day | 140.4 | 90.8 | 75.8 | 123.8 | 94.7 | 74.9 | 94.2 | 81.9 | 66.2 |
| MPA, median min/day | 58.5 | 49.9 | 47.7 | 28.4 | 26.8 | 26.1 | 13.9 | 12.9 | 11.1 |
| VPA, median min/day | 4.2 | 3.8 | 3.2 | 2.0 | 2.0 | 1.8 | 0.9 | 0.8 | 0.6 |
| Sleep duration, median hours/day | 7.5 | 7.1 | 6.7 | 7.7 | 7.4 | 6.9 | 7.9 | 7.6 | 7.0 |
| Age, years | 59.6 | 60.4 | 61.2 | 60.7 | 61.7 | 63.0 | 61.2 | 63.7 | 65.2 |
| Men, % | 38.9 | 49.2 | 56.0 | 37.6 | 43.5 | 49.6 | 33.5 | 37.1 | 44.6 |
| Race and ethnicity, % | |||||||||
| Asian | 1.0 | 1.2 | 1.5 | 1.2 | 1.0 | 1.3 | 1.1 | 1.1 | 1.4 |
| Black | 0.8 | 1.0 | 1.3 | 0.6 | 0.8 | 1.3 | 0.7 | 0.7 | 1.0 |
| Mixed | 0.6 | 0.5 | 0.9 | 0.5 | 0.6 | 0.8 | 0.4 | 0.5 | 0.6 |
| Other | 0.8 | 0.7 | 1.1 | 0.6 | 0.8 | 0.1 | 1.0 | 0.7 | 1.1 |
| White | 96.8 | 96.7 | 95.3 | 97.0 | 96.7 | 95.4 | 96.7 | 97.0 | 95.9 |
| Educational attainment (years of study), % | |||||||||
|
College or University degree (20) |
42.6 | 48.2 | 50.4 | 43.5 | 45.1 | 46.1 | 38.8 | 43.5 | 43.5 |
|
A levels/AS levels or equivalent (13) |
13.8 | 12.9 | 13.6 | 13.8 | 13.0 | 13.5 | 12.7 | 14.0 | 13.1 |
|
O levels/GSCEs or equivalent (10) |
20.9 | 19.1 | 17.1 | 21.1 | 21.0 | 19.6 | 23.2 | 19.9 | 20.0 |
| CSEs or equivalent (10) | 5.4 | 4.1 | 3.5 | 4.7 | 4.0 | 3.2 | 5.3 | 3.9 | 3.0 |
|
NVQ or HND or HNC or equivalent (19) |
5.2 | 4.9 | 4.9 | 5.1 | 5.2 | 5.0 | 5.8 | 4.8 | 5.5 |
| Other | 12.1 | 10.8 | 10.4 | 11.9 | 11.5 | 12.6 | 13.8 | 13.9 | 15.0 |
| BMI, kg/m2, mean (sd) | 24.7 | 25.5 | 26.2 | 25.2 | 25.8 | 26.5 | 26.3 | 26.4 | 27.5 |
| Smoking status, % | |||||||||
| Current cigarette | 5.7 | 6.0 | 6.2 | 6.4 | 6.2 | 6.8 | 7.8 | 7.3 | 8.4 |
| Former cigarette | 33.5 | 34.2 | 34.8 | 33.8 | 34.7 | 34.5 | 34.3 | 34.8 | 35.7 |
| Never cigarette | 60.8 | 59.9 | 59.1 | 59.8 | 59.1 | 58.8 | 58.0 | 57.9 | 55.9 |
| Alcohol intake | |||||||||
| Never | 2.7 | 2.4 | 3.1 | 2.4 | 2.5 | 2.5 | 3.4 | 3.0 | 3.8 |
| Former | 2.4 | 2.3 | 3.3 | 2.2 | 2.2 | 2.7 | 2.6 | 2.6 | 3.2 |
| Current, below guideline | 56.6 | 55.6 | 54.2 | 57.5 | 57.9 | 57.8 | 57.8 | 59.2 | 58.6 |
| Current, above guideline | 38.3 | 39.7 | 39.4 | 37.9 | 37.4 | 37.1 | 36.2 | 35.2 | 34.4 |
| Fruits and Vegetables, serving/day | 8.4 | 8.2 | 8.2 | 8.2 | 8.0 | 7.9 | 8.1 | 7.9 | 7.8 |
| Family history of CVD | 51.4 | 52.1 | 53.2 | 53.7 | 53.2 | 53.8 | 53.2 | 55.2 | 56.7 |
| Family history of cancer | 24.1 | 23.6 | 25.0 | 24.9 | 25.1 | 25.1 | 23.9 | 26.1 | 25.4 |
| Diabetes, % | 0.4 | 0.2 | 0.6 | 0.5 | 0.6 | 0.6 | 0.5 | 0.7 | 1.0 |
| Hypertension, % | 8.5 | 10.7 | 12.5 | 11.3 | 12.6 | 15.9 | 14.6 | 15.5 | 22.0 |
Abbreviation: MVPA: Moderate to vigorous physical activity; MPA: moderate physical activity; VPA: vigorous physical activity; LIPA: light physical activity; BMI: body mass index; CVD: cardiovascular disease. NVQ National Vocational Qualification (NVQ) or HND Higher National Diploma (HND) or HNC Higher National Certificate (HNC) or equivalent = 19 years of education; CSEs Certificate of Secondary education (CSE) or equivalent = 10 years of education; O levels/GSCEs General Certificate of Secondary Education (GCSE) or equivalent = 10 years of education; A levels/AS levels or equivalent = 13 years of education; and College or University degree = 20 years of education. Tertiles were used to categorize low (3.1 to 10.1 h/day), medium (10.2 to 11.3 h/day) and high (≥ 11 h/day) sedentary time. We also used tertiles to categorize MVPA (0 to 21.2 min/day; 21.3 to 40.9 min/day; ≥41 min/day), LPA (0 to 70.2 min/day; 70.3 to 119.2 min/day; ≥119.3 min/day), MPA (0 to 19.1 min/day; 19.2 to 36.8 min/day; ≥36.9 min/day), and VPA (0 to 0.97 min/day; 0.98 to 2.9 min/day; ≥3 min/day)