Table 2. Female cohorts included in the meta-analysis of birth weight and leisure time physical activity (LTPA).
| Country and study | Birth- year(s) | Age (years) | Number of subjects | Mean birth weight (kg) | LTPA (% active) | Definition of LTPA (inactivity) |
| Denmark | ||||||
| Andersen et al. (2000) | 1932–1970 | 20–50 | 919 | 3.3 (0.55)a | 73.8 | None or very little |
| Willumsen (1970) | 1959–1961 | 41–43 | 2160 | 3.2 (0.56) | 49.5 | Light physical activity <4 h/wk |
| Johnsen et al. (2006) | 1932–1946 | 50–64 | 4363 | 3.3 (0.59) | 72.8 | 1st quartile of MET-score for walking, cycling, sports, and gardening |
| Finland | ||||||
| Tammelin et al. (2003) | 1966 | 31 | 2847 | 3.5 (0.49) | 75.1 | Brisk exercise <1 time/wk and light exercise <4 times/wk |
| Tammelin et al. (2007) | 1986 | 15–16 | 2911 | 3.5 (0.51) | 60.1 | ≤1 h/wk of brisk physical activity |
| Eriksson et al. (2006) | 1934–1944 | 56–69 | 1059 | 3.4 (0.47) | 73.5 | 1st quartile of MET-score for conditioning and non-conditioning exercise |
| Norway | ||||||
| Holmen et al. (2000) | 1975–1981 | 14–20 | 2512 | 3.5 (0.51) | 79.3 | <1 time/wk and <2 h/wk of at least moderate intensity |
| Sweden | ||||||
| Rasmussen et al. (2004) | 1985–1987 | 14–16 | 1214 | 3.4 (0.54) | 66.7 | Lowest tertile of energy expenditure |
| Lissner et al. (1996) | 1914–1930 | 50–66 | 607 | 3.5 (0.54) | 73.0 | Almost completely inactive |
a
Numbers in parentheses, standard deviation.