I am looking for the answer to what I think is a very basic question that people must have looked at: empirically, to what degree does food intake actually correlate with exercise, (especially in the United States)?
I am only secondarily interested in removing confounding variables here - what I am looking for is just a raw correlation, e.g., something like a chart with exercise by hours per day or by calories burned per day on the x axis, and calories consumed per day on the y-axis.
I have tried looking for some studies online, but do not have access to some of the journals (e.g., PubMed) that I think may give good information on this subject.
Does anyone know of some good answers to this question, and/or some studies that answer it?
Thanks for any help!