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Effects of exercise on lipoprotein(a)
1Department of Human Movement Studies, University of Queensland, Brisbane, Australia. laurel@hms.uq.edu.au
Sports Medicine (Auckland, N.Z.)
|August 26, 1999
Summary
High lipoprotein(a) [Lp(a)] levels are a cardiovascular risk. Moderate exercise does not change Lp(a), but intense training may slightly increase it, though clinical relevance remains unclear.
Area of Science:
- Cardiovascular Science
- Exercise Physiology
- Lipid Metabolism
Background:
- Lipoprotein(a) [Lp(a)] is a genetically determined blood lipoprotein.
- High Lp(a) levels (> 30 mg/dl) independently predict cardiovascular disease risk.
- Lp(a) levels are generally stable and unaffected by conventional lipid-lowering strategies.
Purpose of the Study:
- To investigate the influence of physical activity on serum Lp(a) levels.
- To differentiate the effects of moderate versus intense exercise on Lp(a).
Main Methods:
- Review of population, cross-sectional, and exercise intervention studies.
- Analysis of Lp(a) level changes in response to varying exercise intensities and durations.
Main Results:
- Moderate exercise training does not alter serum Lp(a) levels.
- Intense, long-term load-bearing exercise (e.g., distance running, weight lifting) may modestly elevate Lp(a) (10-15%).
- Observed elevations in elite athletes require consideration of confounding factors like ethnicity.
Conclusions:
- Moderate physical activity does not impact Lp(a) levels.
- Intense exercise may lead to minor Lp(a) increases, but clinical significance is uncertain.
- Focus remains on managing LDL-C and HDL-C through lifestyle interventions for cardiovascular health.