Are nutrition and physical activity associated with gut microbiota? A pilot study on a sample of healthy young adults.

BACKGROUND: The literature shows that gut microbiota composition is related with health, and a lot of individual and outer factors may determine its variability. In particular, nutrition and exercise seem to influence the presence in the gut of the two major bacterial phyla of Firmicutes and Bacteroidetes. STUDY DESIGN: An ongoing cross-sectional investigation is aimed to explore these associations in humans. METHODS: Healthy Caucasian young adults were asked to provide a fecal sample in order to analyze their gut microbiome considering their Body Mass Index (BMI), adherence to Mediterranean diet and Physical Activity (PA) level. RESULTS: A total of 59 participants (49.1% males, mean age 23.1 ± 3.14 years) were enrolled so far. Firmicutes (61.6±14.6) and Bacteroidetes (30.7 ± 13.3) showed the highest relative abundance in fecal samples. The Pearson's analysis showed a significant negative correlation between PA and Firmicutes (r =-0.270, p = 0.03). Linear regression confirmed a significant decrease of this phylum with the increase of PA (R2 = 0.07, p = 0.03). CONCLUSIONS: These preliminary results suggest the association between physical activity and gut microbiota composition in healthy humans.

Health protection and safety in physical activity and sport promotion: the continuous evolution of roles and regulations in Italy.

The promotion of physical activity is one of the main prevention strategies because of its fundamental role in reducing the risk of developing the major chronic diseases causing disability and death. Consistently with the approach of "health in all policies" for different age classes and health conditions, the Italian Ministry of Health identifies physical activity as a valid and economically sustainable instrument of prevention and health promotion for all the community. By highlighting the preventive role of physical activity, the Italian Government has recently inserted specific services regarding physical activity promotion among the Essential Levels of Care. The existing criticalities regarding the certification of physical fitness for sport practice, the use of defibrillator, and the transparency and safety criteria which should be guaranteed to the users of sport facilities are discussed in this article. The current debate among Italian Institutions may contribute to resolve these criticalities and to simplify the procedures, in order to make the practice of sport and physical activity even more accessible and safe for all citizens.