Abstract
The prevalence of overweight, central obesity and the metabolic syndrome is increasing in Sweden. Physical inactivity plays an important role in the pathogenesis of the metabolic syndrome. Physical activity increases energy expenditure and will affect body weight and central obesity. Furthermore, physical activity positively affects lipoprotein metabolism, blood pressure, peripheral insulin sensitivity and fibrinolysis. Consequently, physical activity plays an important role in the prevention and treatment of the metabolic syndrome. Daily low-intensity physical activity and aerobic exercise of moderate intensity for 30 min or more at least twice a week is recommended.