Table 1. Male 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 | 948 | 3.4 (0.56)a | 79.1 | None or very little |
| Bak et al. (2004) | 1930–1956 | 26–52 | 225 | 3.5 (0.58) | 58.7 | <2 h of exercise/wk |
| Osler et al. (2008) | 1953 | 51 | 5767 | 3.4 (0.53) | 82.4 | Read, watch television or have other sedentary activities |
| Willumsen (1970) | 1959–1961 | 41–43 | 1856 | 3.3 (0.59) | 54.0 | Light physical activity <4 h/wk |
| Johnsen et al. (2006) | 1932–1946 | 50–64 | 4143 | 3.4 (0.59) | 74.4 | 1st quartile of MET-score for walking, cycling, sports, and gardening |
| Finland | ||||||
| Salonen (1988) | 1926–1946 | 42–61 | 719 | 3.5 (0.54) | 54.1 | Exercising < once/mo |
| Tammelin et al. (2003) | 1966 | 31 | 2803 | 3.6 (0.52) | 69.9 | Brisk exercise <1 time/wk and light exercise <4 times/wk |
| Tammelin et al. (2007) | 1986 | 15–16 | 2622 | 3.7 (0.51) | 70.6 | ≤1 h/wk of brisk physical activity |
| Eriksson et al. (2006) | 1934–1944 | 56–69 | 906 | 3.5 (0.50) | 76.9 | 1st quartile of MET-score for conditioning and non-conditioning exercise |
| Norway | ||||||
| Holmen et al. (2000) | 1975–1981 | 14–20 | 2596 | 3.6 (0.54) | 81.7 | <1 time/wk and <2 h/wk of at least moderate intensity |
| Sweden | ||||||
| Rasmussen et al. (2004) | 1985–1987 | 14–16 | 1312 | 3.5 (0.54) | 66.6 | Lowest tertile of energy expenditure |
| Michealsson et al. (2007) | 1920–1924 | 55–64 | 993 | 3.6 (0.50) | 88.6 | Mostly sedentary leisure time |
a
Numbers in parentheses, standard deviation.