Physical activity, coronary heart disease, and inflammatory response

Area of Science:

• Cardiology
• Preventive Medicine
• Exercise Physiology

Background:

• Coronary heart disease (CHD) remains a leading cause of mortality worldwide.
• Understanding the differential impact of various physical activity types on CHD risk is crucial for public health.
• The role of leisure time physical activity (LTPA) versus work-related physical strain (WRPS) on CHD and inflammatory markers requires further elucidation.

Purpose of the Study:

• To quantify the association between LTPA and WRPS with the risk of developing CHD.
• To investigate the relationship between physical activity levels and key hemostatic and inflammatory markers.
• To adjust for established cardiovascular risk factors in these analyses.

Main Methods:

• A case-control study design was employed.
• 312 patients with stable CHD and 479 age- and sex-matched controls participated.
• Odds ratios for CHD were calculated for LTPA and WRPS categories, with adjustments for covariates.

Main Results:

• LTPA demonstrated a significant inverse association with CHD risk, with higher activity levels correlating to lower risk.
• WRPS showed a strong positive association with increased CHD risk.
• LTPA was inversely associated with inflammatory markers (C-reactive protein, serum amyloid A, interleukin 6, intercellular adhesion molecule 1), independent of WRPS.

Conclusions:

• LTPA, even at moderate levels, is associated with a reduced risk of CHD.
• WRPS is linked to an elevated risk of CHD.
• LTPA exerts beneficial effects on the inflammatory response, potentially explaining its cardioprotective benefits.