“…For example, 30% of 16-year-old Swedish adolescents in practical education are reported to achieve all of their MVPA during PE (Westerstahl, Barnekow-Bergkvist, & Jansson, 2005), whereas only 8% of Chinese students participate in MVPA outside of school (Tudor-Locke, Ainsworth, Adair, Du, & Popkin, 2003). In Dutch adolescent boys, increases in total weekly physical activity of 3Á25% have been observed when increasing the number of weekly PE lessons (Kemper et al, 1976). Therefore, it is often claimed that regular PE could make a meaningful contribution to the daily accumulation of physical activity needed for health benefits (Corbin & Pangrazi, 2003;Sallis et al, 1997).…”