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