LDL (low-density lipoprotein) is often labeled 'bad' cholesterol, but its role in sport is more nuanced. On one hand, LDL is essential for transporting lipids to muscles, where they serve as an energy source during exercise. On the other hand, oxidatively modified LDL increases cardiovascular risk, especially in athletes under high stress. Current evidence shows that regular exercise can improve the LDL profile by reducing small, dense LDL particles, which are particularly atherogenic. However, there is no clear evidence that a specific LDL level directly affects athletic performance. Individual responses to training and diet vary widely, and genetic factors (e.g., APOE variants) can influence LDL regulation. For athletes, it is more important to assess the full lipid profile (LDL, HDL, triglycerides, lipoprotein(a)) in the context of inflammatory markers like hsCRP. An isolated LDL value without considering training, nutrition, and inflammation status is of limited value. The provided context does not contain specific studies on LDL in sport; this answer is based on general medical knowledge.
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