The effects of a single bout of exercise at 40% of maximum aerobic capacity with regard to alimentary lipemia and postprandial lipoproteins was studied in a cross-over design in 12 young healthy male volunteers. In addition to lipids and lipoproteins, lipoprotein lipase, free glycerol, free fatty acids, plasma insulin, and C-peptide concentrations were quantitated. Postprandial exercise reduced alimentary lipemia by 34% while lipoprotein lipase activity rose by 42%. The postprandial fall of high-density lipoprotein (HDL)3 was abolished and the rise of HDL2 accentuated. Free glycerol and free fatty acid concentrations were higher following the meal plus exercise regimen compared to the meal alone. It is concluded that at least part of the chronic effect of exercise may come from additive effects such as observed from individual bouts of muscular activity.
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