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Does Physical Inactivity Induce Significant Changes in Human Gut Microbiota? New Answers Using the Dry Immersion Hypoactivity Model
oleh: Maxence Jollet, Kevin Nay, Angèle Chopard, Marie-Pierre Bareille, Arnaud Beck, Vincent Ollendorff, Barbara Vernus, Anne Bonnieu, Mahendra Mariadassou, Olivier Rué, Frédéric Derbré, Bénédicte Goustard, Christelle Koechlin-Ramonatxo
Format: | Article |
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Diterbitkan: | MDPI AG 2021-10-01 |
Deskripsi
Gut microbiota, a major contributor to human health, is influenced by physical activity and diet, and displays a functional cross-talk with skeletal muscle. Conversely, few data are available on the impact of hypoactivity, although sedentary lifestyles are widespread and associated with negative health and socio-economic impacts. The study aim was to determine the effect of Dry Immersion (DI), a severe hypoactivity model, on the human gut microbiota composition. Stool samples were collected from 14 healthy men before and after 5 days of DI to determine the gut microbiota taxonomic profiles by 16S metagenomic sequencing in strictly controlled dietary conditions. The α and β diversities indices were unchanged. However, the operational taxonomic units associated with the Clostridiales order and the <i>Lachnospiraceae</i> family, belonging to the Firmicutes phylum, were significantly increased after DI. Propionate, a short-chain fatty acid metabolized by skeletal muscle, was significantly reduced in post-DI stool samples. The finding that intestine bacteria are sensitive to hypoactivity raises questions about their impact and role in chronic sedentary lifestyles.