Secular differences in the association between caloric intake, macronutrient intake, and physical activity with obesity

To determine whether the relationship between caloric intake, macronutrient intake, and physical activity with obesity has changed over time. Dietary data from 36,377 U.S. adults from the National Health and Nutrition Survey (NHANES) between 1971 and 2008 was used. Physical activity frequency data was only available in 14,419 adults between 1988 and 2006. Generalised linear models were used to examine if the association between total caloric...