Theseare: the Scottish Health Survey which monitors overall levels of physical activityin Scotland among adults; the Health Education Population Survey which monitorschanges in knowledge, attitudes, motivation and action among adults around physicalactivity, and the Health Behaviour in School-Aged Children, a World Health Organisationcross-national collaborative study which compares Scottish children at ages 11,13 and 15 to children of the same age in other countries.Targets within the National Strategyfor Sport, Sport 21, which relate to physical activity, will be measuredthrough the Scottish Health Survey, the Scottish Opinion Survey and data compiledfrom schools by education authorities.