Table 3.
Spearman Correlations of Type and Level (MET-hours/week) of Reported Physical Activity With Questionnaire- and Accelerometer-Assessed Total Physical Activity, Whitehall II Study, United Kingdom, 2012–2013
| Questionnaire-Assessed Physical Activity Level and Type | Contribution to Questionnaire-Assessed Total Physical Activity, % | Questionnaire-Assessed Total Physical Activity, MET-hours/week |
Accelerometer-Assessed Total Physical Activity, g/week |
||
|---|---|---|---|---|---|
| Spearman's r | 95% CI | Spearman's r | 95% CI | ||
| Physical activity levela | |||||
| Mild | 68.3 | 0.78 | 0.76, 0.79 | 0.21 | 0.18, 0.24 |
| Moderate | 25.0 | 0.63 | 0.61, 0.65 | 0.25 | 0.22, 0.28 |
| Vigorous | 6.7 | 0.39 | 0.36, 0.41 | 0.24 | 0.21, 0.26 |
| Physical activity type | |||||
| Walking | 47.5 | 0.72 | 0.71, 0.74 | 0.21 | 0.18, 0.24 |
| Cycling | 2.4 | 0.24 | 0.21, 0.27 | 0.15 | 0.12, 0.18 |
| Sports | 9.7 | 0.38 | 0.35, 0.40 | 0.22 | 0.19, 0.25 |
| Gardening | 12.2 | 0.47 | 0.45, 0.49 | 0.16 | 0.13, 0.19 |
| Do-it-yourself activities | 5.0 | 0.35 | 0.31, 0.37 | 0.15 | 0.12, 0.18 |
| Housework | 20.4 | 0.31 | 0.28, 0.34 | 0.09 | 0.05, 0.12 |
| Other | 2.8 | 0.18 | 0.15, 0.34 | 0.07 | 0.04, 0.10 |
Abbreviations: CI, confidence interval; MET, metabolic equivalent.
a Mild physical activity was defined as activities with corresponding MET values lower than 3 (e.g., dish-washing, boating), moderate physical activity as activities with MET values of 3–5.9 (e.g., cycling, weeding), and vigorous physical activity as activities with MET values of 6 or above (e.g., swimming, mowing).