Changes in the gut microbiota during and after commercial helium–oxygen saturation diving in China

Objectives The influence of commercial helium–oxygen saturation diving on divers’ gut microbiotas was assessed to provide dietary suggestion. Methods Faecal samples of 47 divers working offshore were collected before (T1), during (T2) and after (T3) saturation diving. Their living and excursion depths were 55–134 metres underwater with a saturation duration of 12–31 days and PaO 2 of 38–65 kPa. The faecal samples were examined through 16S...