Increased exercise level and plasma lipoprotein concentrations: a one-year, randomized, controlled study in sedentary, middle-aged men. - Wood,P.D.; Haskell,W.L.; Blair,S.N.; Williams,P.T.; Krauss,R.M.; Lindgren,F.T.; Albers,J.J.; Ho,P.H.; Farquhar,J.W. (Metabolism, 1983)