good physical activity seems to limit the risks associated with the virus

It is already well established that good physical activity promotes a better response of the body to respiratory diseases in general, but this work has focused more specifically on Covid.

This is not an isolated study, but an analysis that takes up and compiles around fifteen pre-existing works, which gives it a priori greater solidity. The authors conclude that in the event of regular activity the risk of infection is slightly reduced and, above all, that that of hospitalization decreases by around a third (-36%) and that of death by almost half (- 43%).

The authors estimate that you need at least 150 minutes of moderate activity, or 75 minutes of vigorous activity, per week for maximum effect.

Boosted immune response

However, this type of study does not allow conclusions to be drawn on the mechanisms at work. It is likely that good physical activity directly facilitates an effective immune response. But it can also limit upstream certain risk factors of a serious Covid, such as overweight.

Above all, the authors warn that their conclusions must be taken “with caution” because the studies included vary greatly in their methodology.

Most of this work, moreover, is based on the indications given by the patients themselves on their physical activity, and not on an objective assessment.

Finally, the researchers do not exclude a bias that would lead to publishing only the most conclusive studies as to a positive effect of physical activity.

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