The March issue of the British Journal of Sports Medicine came out with the results from a 9-year-long cohort study of people who did physical activity and its impact on influenza and pneumonia.
Before we get into details, note that it is a cohort study – of 577 909 US adults. Cohort studies are observational, whereas randomised controlled trials (RCTs) are interventional. Establishing causations from observational studies is problematic.
A key finding of the study has been the association of lowered risk of influenza and pneumonia with aerobic physical activity.
Reference
Webber BJ, et al. Br J Sports Med 2023;0:1–8.
