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Physical activity levels as estimated from accelerometer measurement and EPIC and LTPAQ self-reported questionnaires |
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| Physical activity assessment |
Median (25th-75th centile) |
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| Hours/week |
Counts |
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| Accelerometera |
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| Total counts per day |
347328 (278084–428769) |
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| Average counts per minute |
398 (316–483) |
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| MET-hours/week |
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| Total activity |
46.7 (39.8–53.6) |
160.0 (135.3–183.6) |
| Light intensity |
25.9 (21.1–29.4) |
64.8 (52.8–73.5) |
| Moderate intensity |
19.5 (16.3–23.7) |
87.6 (73.4–106.5) |
| Vigorous intensity |
0.2 (0.0–0.7) |
1.1 (0.3–4.3) |
| Sedentary timeb |
121.1 (114.1–128.1) |
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| EPIC questionnaire (10 months) |
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| Total non-occupationalc |
20.3 (13.6–31.6) |
73.5 (52.6–116.0) |
| Recreational |
9.0 (5.5–14.0) |
34.5 (19.5–54.0) |
| Household |
10.1 (5.2–20.1) |
37.7 (19.0–68.8) |
| Vigorous activity, self-ratedd |
2.0 (0.0–5.0) |
18.0 (0.0–45.0) |
| Vigorous activity, MET-assignede |
2.0 (0.3–4.8) |
12.4 (1.6–28.8) |
| Light-moderate activitye |
17.5 (10.5–28.0) |
59.8 (34.3–96.0) |
| LTPAQ questionnaire |
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| Total activityf |
33.4 (26.8–41.3) |
98.6 (72.6–123.3) |
| Non-occupational |
12.2 (7.2–19.4) |
46.2 (29.6–72.2) |
| Occupationalf |
17.1 (10.6–24.1) |
40.1 (23.2–58.5) |
| Recreational |
3.0 (1.6–4.2) |
15.5 (8.2–23.8) |
| Household |
7.2 (3.5–13.7) |
22.6 (11.6–45.9) |
| Active transportation |
0.9 (0.5–1.4) |
2.9 (1.7–4.5) |
| Vigorous activity, MET-assignede |
0.5 (0.1–1.5) |
3.8 (0.7–12.4) |
| Light-moderate activitye |
30.5 (23.6–38.9) |
86.9 (65.6–112.8) |
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EPIC, European Prospective Investigation into Cancer and Nutrition; LTPAQ, Lifetime Total Physical Activity Questionnaire a Data are averages of three 7-day accelerometer periods. The Swartz cut-points [23] were used to estimate the time spent in light, moderate and vigorous intensity activity. b Sedentary time defined as <100 counts/min, and includes non-wear and sleep time; corresponds to 17.3 (16.3–18.3) hours/day c Combined recreational and household physical activity d Estimated from a question about time in activities causing sweating or faster heartbeat e MET-assigned vigorous activity estimated using the sum of time spent in activities with MET values ≥ 6; Light-moderate activity was estimated using the sum of time spent in activities with MET values < 6 f Occupational activities with a mean MET value of ≤ 1.5 (i.e. purely sedentary occupations) were excluded from activity estimates | ||
Cust et al. International Journal of Behavioral Nutrition and Physical Activity 2008 5:33 doi:10.1186/1479-5868-5-33 |
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