In order to investigate the relationship between physical activity and lung cancer among smokers and whether this relationship differed according to physical activity intensity, smoking status, and gender, we conducted a meta analysis. The paper reporting on this study was just published in the Journal of Science and Medicine in Sport. Dr. Laurien Buffart is the first author of this publication.
Pooled analysis of the results of 7 cohort studies showed that physical activity was associated with a somewhat reduced risk of lung cancer in smokers. We did not find clear dose–response relationship regarding exercise or smoking intensity, i.e. high levels of physical activity did not show a higher risk reduction than moderate physical activity levels, and the association between physical activity and risk reduction did not differ between heavy and light smokers.
Results of this meta-analysis thus indicate that leisure time physical activity is associated with reduced risk of developing lung cancer among smokers. But, of course, non smoking is much more important and effective in preventing lung cancer .
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