Incident hypercholesterolemia in relation to changes in vigorous physical activity.
1Ernest Orlando Lawrence Berkeley National Laboratory, Life Sciences Division, 1 Cyclotron Road, Berkeley, CA 94720, USA. ptwilliams@lbl.gov
Medicine and Science in Sports and Exercise
|December 19, 2008
Summary
Increasing running distance lowers hypercholesterolemia risk in men and women. Higher doses of vigorous exercise, even without changes, reduce the odds of high cholesterol, partly due to BMI.
Area of Science:
- Exercise Physiology
- Cardiovascular Health
- Epidemiology
Background:
- Hypercholesterolemia is a significant risk factor for cardiovascular disease.
- Understanding the impact of exercise modifications on cholesterol levels is crucial for public health.
- Recreational running is a popular form of vigorous exercise.
Purpose of the Study:
- To investigate the relationship between changes in running volume and the incidence of hypercholesterolemia.
- To determine if increasing, decreasing, or maintaining running distance affects hypercholesterolemia risk.
Main Methods:
- Prospective follow-up of over 20,000 recreational runners for approximately 8 years.
- Categorization of participants based on changes in weekly running distance: increased, constant, or decreased.
- Comparison of hypercholesterolemia incidence across these running distance groups, adjusting for body mass index (BMI).
Main Results:
- Runners who increased their running distance had significantly lower odds of developing hypercholesterolemia compared to those who maintained or decreased their distance.
- A dose-response relationship was observed, with each kilometer-per-day increase in average running distance associated with reduced hypercholesterolemia odds.
- These effects were partially mediated by changes in body mass index (BMI).
Conclusions:
- Increasing running mileage is associated with a decreased risk of hypercholesterolemia.
- Higher levels of vigorous exercise are linked to lower odds of hypercholesterolemia, independent of exercise volume changes.
- Body mass index plays a role in the relationship between exercise and hypercholesterolemia.
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