Exercise training amount and intensity effects on metabolic syndrome (from Studies of a Targeted Risk Reduction Intervention through Defined Exercise) - Johnson, J L; Slentz, C A; Houmard, J A; Samsa, G P; Duscha, B D; Aiken, L B; McCartney, J S; Tanner, C J; Kraus, W E (Am J Cardiol, 2007)