Cardiorespiratory fitness, LDL cholesterol, and CHD mortality in men

Stephen W Farrell1, Carrie E Finley, Scott M Grundy

  • 1The Cooper Institute, Dallas, TX 75230, USA. sfarrell@cooperinst.org

Insights

Higher cardiorespiratory fitness (CRF) is linked to lower coronary heart disease (CHD) mortality in men. Maintaining moderate to high CRF significantly reduces mortality risk, regardless of LDL cholesterol levels.

Area of Science:

  • Cardiology
  • Preventive Medicine
  • Exercise Physiology

Background:

  • Limited data exist on the combined impact of cardiorespiratory fitness (CRF) and LDL cholesterol on coronary heart disease (CHD) mortality.
  • Understanding this relationship is crucial for cardiovascular risk assessment in men.

Purpose of the Study:

  • To investigate the joint association of CRF and LDL cholesterol concentration with subsequent CHD mortality in a large cohort of men.
  • To determine if CRF can modify the risk associated with elevated LDL cholesterol.

Main Methods:

  • A cohort of 40,718 healthy men was followed for CHD mortality.
  • Cardiorespiratory fitness (CRF) was assessed via maximal treadmill exercise test.
  • Participants were categorized by CRF and LDL cholesterol levels; Cox regression analysis was used to compute hazard ratios (HRs).

Main Results:

  • Decreasing CRF categories showed a significant positive trend in CHD mortality (P < 0.0001).
  • Increasing LDL cholesterol categories also demonstrated a significant positive trend in CHD mortality (P < 0.0001).
  • Within each LDL category, higher CRF was associated with significantly lower adjusted CHD mortality (P < 0.02).

Conclusions:

  • Cardiorespiratory fitness (CRF) is a strong, inverse predictor of CHD mortality in men.
  • Higher levels of CRF attenuate the mortality risk associated with elevated LDL cholesterol.
  • Routine assessment of CRF is recommended for cardiovascular risk management.
Abstract

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