Exercise acutely increases high density lipoprotein- @entity165 and lipoprotein lipase activity in trained and untrained XXXX .

@entity1 @entity9478 @entity412 @entity9477 @entity8450 @entity165
We studied the effects of a single exercise session on lipid and lipoprotein concentrations and on postheparin plasma lipoprotein lipase (LPLA) and hepatic @entity412 hydrolase activities (HTGLA) in 11 trained (T) and ten untrained (UT) @entity1 . Subjects exercised on a bicycle ergometer at 80% of their maximal heart rate for one (UT) or two hours (T). Blood samples were drawn 24 hours before and at ten minutes and 24, 48, and 72 hours after exercise. Values were analyzed before and after adjustment for estimated changes in @entity8450 ( @entity8450 ). High density lipoprotein @entity165 (HDL-C) increased 2 +/- 4 mg/dL in T (P less than 0.05) and 1 +/- 2 mg/dL in UT subjects beginning 48 hours after exercise. This increase was magnified by adjusting for the 5% to 8% postexercise expansion of @entity8450 . The increase in HDL in the T subjects was produced by increases in the @entity9477 -C subfraction (+3 +/- 4 mg/dL, P less than 0.05) whereas @entity9478 increased in the UT @entity1 (+2 +/- 3 mg/dL, P less than 0.05). LPLA did not change in either subject group when estimated @entity8450 changes were ignored but increased 11% (P less than 0.05) at 24 hours after exercise when @entity8450 was considered. HTGLA was 11% below baseline in the UT @entity1 24 to 72 hours after exercise (P less than 0.05) but showed no change in either subject group after adjustment for @entity8450 . These results demonstrate that exercise acutely increases HDL levels by raising the @entity9477 subfraction in T and the @entity9478 subfraction in UT @entity1 .(ABSTRACT TRUNCATED AT 250 WORDS)
