Hamilton et al. 2008

Research paper

Hamilton MT, Healy GN, Dunstan DW, Zderic TW, Owen N. Too little exercise and too much sitting: Inactivity physiology and the need for new recommendations on sedentary behavior. Current Cardiovascular Risk Reports. 2008;2(4):292-298. doi:10.1007/s12170-008-0054-8

Why we cite it

Argues that prolonged sitting is a distinct health hazard independent of whether a person exercises, using the “active couch potato” as its example (coining marked 2026-09-10: no held file shows who coined it). Directly relevant to the project because it argues that someone can meet exercise guidelines and still carry metabolic risk from sitting most of the day (corrected 2026-09-10 from ”explains why … and still suffer”). The paper argues for what it calls ”the unique paradigm of inactivity physiology”, adding that ”much remains to be understood scientifically”: the question is not just “Are you exercising enough?” but “Are you sitting too much?” — with distinct biological mechanisms (lipoprotein lipase suppression, HDL reduction) that exercise alone does not address.

Mode correction, 2026-09-02 (card SP97Y7). This section said the paper ”establishes” the claim and that its mechanisms are ones ”exercise alone does not address.” This is a review advancing the inactivity-physiology paradigm, not a trial testing it — the authors coined the field’s terms, and ”a paradigm shift” is the section’s own description of what they propose. A review argues; it does not establish.

The mechanisms named — lipoprotein lipase suppression, HDL reduction — are the proposed account, and the strong form (that exercise alone does not address them) is the paradigm’s central claim rather than an independent finding. Cite it as the argument of the people who named the field.