How much physical activity is optimal for health? Methodological considerations.
Lee
I M
IM
Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. halim@gauss.bwh.harvard.edu
Paffenbarger
R S
RS
D015444:Exercise / Q000502:physiology*; D006293:Health Promotion; D006801:Humans; D010806:Physical Education and Training / Q000379:methods; D011322:Primary Prevention