The effect of physical activity on asthma incidence over 10 years: population-based study.

https://bit.ly/3bEtHDn.

The Association of Early Life Viral Respiratory Illness and Atopy on Asthma in Children: Systematic Review and Meta-Analysis.

Background: The interaction between early life viral respiratory illness and atopy in the genesis of asthma has been widely discussed in the literature as the "two-hit hypothesis."

Objective: To synthesize evidence regarding the association of childhood viral respiratory illness and atopy in the development of persistent wheezing and asthma.

Methods: A systematic review was performed, according to Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines.

Physical activity and asthma: cause or consequence? A bidirectional longitudinal analysis.

Background: There is increasing interest in the role physical activity (PA) can play in the development and management of asthma. Understanding whether PA can have a positive effect is hindered by the potential influence of asthma on PA and a lack of relevant longitudinal data, leading to a debate on the existence and direction of these links. The aim of this study was to explore whether having asthma results in lower PA levels, and/or whether lower PA levels lead to more asthma in children and adolescents.