- Towards aerodynamically equivalent COVID19 1.5 m social distancing for walking and running: Full article – preprint – List of questions and answers
- Belgian-Dutch Study via Medium – “In a lot of countries walking, biking and jogging are welcome activities in these times of COVID-19. However, it is important to note that you need to avoid each other’s slipstream when doing these activities. This comes out of the result of a study by the KU Leuven (Belgium) and TU Eindhoven (Netherlands). The typical social distancing rule which many countries apply between 1–2 meters seems effective when you are standing still inside or even outside with low wind. But when you go for a walk, run or bike ride you better be more careful. When someone during a run breathes, sneezes or coughs, those particles stay behind in the air. The person running behind you in the so-called slip-stream goes through this cloud of droplets…”
- Via the article’s Q&A – “The value of this study is not to indicate that person B moving closely behind person A can inhale the droplets emitted by person A. That is common sense for most people with a minimum fluid dynamics background and/or intuition. The value of this study is to indicate where exhaled droplets go (i.e. in the slipstream) and which specific social distances should be used in walking/running/cycling to be equivalent to 1.5 m standing still…”
- And via Outside – Inside the Controversial 6-Foot Social-Distancing Study – “Last week a paper suggested that runners and cyclists need much more than six feet. The report went viral, and backlash ensued. But there was some legitimate science behind the claims…”
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