Physical inactivity: a major public health problem.

The article presents a lecture delivered by Professor Steven N. Blair during the British Nutrition Foundation Conference at the Royal College of Physicians in London, England on November 24, 2006. The lecture was focused on the role of physical activity in the promotion of health and as a clinical intervention to address problem on physical inactivity. Moreover, it reviewed data from previous studies associated with sedentary living and low fitness levels with health status.