Table 3.
Estimated VO2max (mL/kg/min) in association with self-reported and accelerometer-derived physical activity pattern correlates
| n | Estimated VO2max | Low estimated VO2max | ||
| Median (95% CI) | % within subgroup | ORC (95% CI) | ||
| Self-report | ||||
| Commuting habits* | ||||
| No active commuting | 3057 | 33.1 (32.8 to 33.4)† | 37 | 1 (ref) |
| Any active commuting, further divided into: | 1738 | 34.6 (34.2 to 35.0) | 23 | 0.47 (0.41 to 0.54) |
| Partly active commuter, bike | 671 | 34.8 (34.1 to 35.5) | 20 | 0.41 (0.33 to 0.50) |
| Partly active commuter, walking | 196 | 30.4 (29.3 to 31.6) | 41 | 1.12 (0.83 to 1.52) |
| Partly active commuter, mix | 19 | 30.2 (28.8 to 33.5) | 21 | 0.45 (0.15 to 1.38) |
| All year active commuter, bike | 407 | 38.1 (36.9 to 39.2) | 10 | 0.18 (0.13 to 0.25) |
| All year active commuter, walking | 415 | 33.0 (32.2 to 33.4) | 31 | 0.71 (0.57 to 0.89) |
| All year active commuter, mix | 30 | 34.7 (30.6 to 37.3) | 23 | 0.51 (0.22 to 1.22) |
| Physical working situation | ||||
| Sedentary to light | 3921 | 33.7 (33.5 to 34.1)‡ | 30 | 1 (ref) |
| Sometimes to frequently heavy | 945 | 32.5 (32.0 to 33.1) | 38 | 1.44 (1.24 to 1.67) |
| Exercise habits | ||||
| Never | 1384 | 31.0 (30.7 to 31.4)† | 51 | 1 (ref) |
| Irregular | 1067 | 31.3 (30.8 to 31.7) | 43 | 0.75 (0.64 to 0.88) |
| 1–2 times per week | 1032 | 33.5 (33.0 to 34.1) | 27 | 0.35 (0.29 to 0.41) |
| 2–3 times per week | 1089 | 35.2 (34.8 to 35.7) | 20 | 0.25 (0.21 to 0.30) |
| >3 times per week | 649 | 38.3 (37.8 to 38.9) | 12 | 0.14 (0.11 to 0.19) |
| Total physical activity | ||||
| Sedentary | 540 | 30.0 (29.1 to 30.5)† | 63 | 1 (ref) |
| Light | 2366 | 31.5 (31.2 to 31.9) | 42 | 0.39 (0.32 to 0.48) |
| Moderate | 1613 | 34.9 (34.6 to 35.4) | 21 | 0.14 (0.11 to 0.18) |
| Regular exercise/training | 669 | 38.6 (38.0 to 39.1) | 9 | 0.06 (0.05 to 0.09) |
| Leisure time sitting | ||||
| Q1; <4 hours per day | 1121 | 34.1 (33.5 to 34.7) | 28 | 1 (ref) |
| Q2; 4–6 hours per day | 1039 | 33.6 (33.0 to 34.2) | 32 | 1.24 (1.02 to 1.49) |
| Q3; 6–8.5 hours per day | 925 | 34.0 (33.5 to 34.5) | 29 | 1.11 (0.91 to 1.36) |
| Q4; >8.5 hours per day | 958 | 33.7 (33.3 to 34.2) | 32 | 1.31 (1.08 to 1.59) |
| % of time spent in sedentary | ||||
| Q1; <47% | 1267 | 34.1 (33.5 to 34.5)† | 26 | 1 (ref) |
| Q2; 47%–54% | 1265 | 33.6 (33.1 to 34.1) | 28 | 1.19 (0.99 to 1.42) |
| Q3; 54%–61% | 1266 | 33.4 (33.0 to 33.7) | 33 | 1.52 (1.27 to 1.81) |
| Q4; >61% | 1267 | 33.0 (32.3 to 33.3) | 43 | 2.44 (2.05 to 2.91) |
| % of time spent in prolonged sedentary (of total wear time) | ||||
| Q1; <13% | 1266 | 34.1 (33.6 to 34.5)† | 25 | 1 (ref) |
| Q2; 13%–19% | 1267 | 33.5 (33.0 to 34.0) | 28 | 1.14 (0.96 to 1.37) |
| Q3; 19%–26% | 1265 | 33.5 (33.1 to 34.0) | 35 | 1.60 (1.35 to 1.91) |
| Q4; >26% | 1267 | 32.7 (32.2 to 33.1) | 42 | 2.18 (1.83 to 2.60) |
| % of time spent in light physical activity | ||||
| Q1; <33% | 1267 | 33.7 (33.2 to 34.0) | 39 | 1 (ref) |
| Q2; 33%–40% | 1266 | 33.3 (32.9 to 33.7) | 34 | 0.78 (0.66 to 0.92) |
| Q3; 40%–46% | 1265 | 33.5 (33.1 to 34.0) | 29 | 0.60 (0.51 to 0.72) |
| Q4; >46% | 1267 | 33.2 (32.8 to 33.8) | 28 | 0.56 (0.47 to 0.66) |
| % of time spent in moderate physical activity | ||||
| Q1; <3.8% | 1267 | 31.6 (31.6 to 32.5)† | 44 | 1 (ref) |
| Q2; 3.8%–5.3% | 1265 | 33.3 (32.7 to 33.7) | 32 | 0.62 (0.52 to 0.73) |
| Q3; 5.3%–7.2% | 1266 | 33.8 (33.3 to 34.1) | 29 | 0.52 (0.44 to 0.62) |
| Q4; >7.2% | 1267 | 34.9 (34.3 to 35.3) | 26 | 0.44 (0.37 to 0.52) |
| % of time spent in vigorous physical activity | ||||
| Q1; <0.02% | 1266 | 30.5 (30.1 to 31.0)† | 49 | 1 (ref) |
| Q2; 0.02%–0.1% | 1266 | 31.7 (31.3 to 32.1) | 43 | 0.80 (0.69 to 0.94) |
| Q3; 0.1%–0.6% | 1267 | 34.3 (34.0 to 34.7) | 23 | 0.34 (0.28 to 0.40) |
| Q4; >0.6% | 1266 | 36.7 (36.3 to 37.1) | 16 | 0.21 (0.18 to 0.26) |
cAdjusted for sex and age, comparing the lowest sex-specific tertile of estimated VO2maxwith the two higher tertiles.
*Analysed both as comparing No active commuting and Any active commuting, as well as further dividing Any active commuting into; Partly commuting, defined as going by bike or walking at least one season out of four; All year commuting, defined as going by bike or walking all year around. Partly and all year commuting ‘walking’ or ‘bike’ were defined as the majority of seasons commuted with that mode of active commuting. Mix was defined when the seasons of active commuting were spent equally between the two modes.
†Kruskal-Wallis analysis of variance p<0.0001.
‡Significantly different from other subgroup (Mann-Whitney U test, p<0.0001).