Related Experiment Videos
Smoking, lung function, physical performance and latent coronary heart disease in presumably healthy middle-aged men
Insights
Smoking significantly impacts cardiovascular health, lung function, and physical performance in middle-aged men. Heavy smoking correlates with coronary artery disease, while even moderate smoking impairs lung capacity and exercise ability.
Area of Science:
- Cardiovascular Medicine
- Pulmonary Medicine
- Sports Medicine
Background:
- Cardiovascular disease (CVD) remains a leading cause of mortality worldwide.
- Smoking is a well-established risk factor for numerous chronic diseases.
- Understanding the specific impact of smoking on latent CVD, lung function, and physical performance is crucial for public health initiatives.
Purpose of the Study:
- To investigate the relationship between smoking habits and latent coronary heart disease (CHD).
- To assess the impact of smoking on lung function and physical performance in presumably healthy men.
- To differentiate the effects of current smoking versus past smoking on health outcomes.
Main Methods:
- A cardiovascular survey of 2014 men aged 40-59 years.
- Classification of participants into "normals" and those with suspected CHD.
- Coronary angiography for confirmed CHD cases.
- Spirometry for lung function assessment.
- Bicycle exercise testing for physical performance evaluation.
Main Results:
- Positive correlation found between smoking intensity and the extent of coronary atheromatosis in men with confirmed CHD.
- No significant difference in smoking habits between men with mild angina and "normals".
- Significant negative relationship between smoking and physical performance and lung function in "normals".
- Former smokers and never-smokers exhibited similar lung function and physical performance.
Conclusions:
- Smoking is directly linked to the severity of coronary atherosclerosis.
- Smoking detrimentally affects lung function and physical capacity, even in individuals without diagnosed CHD.
- Quitting smoking appears to restore lung function and physical performance to levels comparable to never-smokers.
Abstract:
During a cardiovascular survey comprising 2014 presumably healthy men aged 40-59 years, latent (previously undetected) coronary heart disease (CHD), lung function and physical performance were related to differences in smoking habits. The survey examination classified 1 832 individuals as "normals" (without clinical signs/symptoms of CHD). Among the others, a strong supicion of CHD was found in 115, of whom 105 had diagnostic coronary angiography. No angiography was performed in another 35 individuals with slight, albeit typical angina pectoris. The remaining 42 men were excluded from this presentation for various reasons. The following findings were obtained: 1) in the 69 men with positive coronary angiography, the extent of coronary atheromatosis was positively related to the number of cigarettes smoked. 2) The smoking habits of the 35 individuals with slight angina pectoris but no angiography did not differ from those of the "normals". 3) Physical performance during a near maximal bicycle exercise test and lung function according to spirometry were strongly and negatively related to smoking (in "normals"). 4) Previous smokers and never-smokers among "normals" had almost identical lung function and physical performance.