Abstract
ABSTRACTObjective: To evaluate and to correlate levels of physical activity with the pulmonary function of children with and without a diagnosis of asthma.Methods: This study was conducted in two phases with schoolchildren aged between eight and 16 years old in Porto Alegre/RS. In the first phase (cross sectional), the sample was classified as asthmatic if a physician had ever diagnosed them with asthma and if they reported symptoms and treatment for the disease in the past 12 months. In the second phase (control-case), the following were measured: anthropometry, physical activity levels, time spent in front of screens, and lung function (spirometry). Data are presented in mean and standard deviation or median and interquartile interval and by absolute and relative values. Chi-square, Student’s t-test or Mann-Whitney test and Spearman correlation were applied, with p<0.05 being significant.Results: 605 students participated in the study, 290 children with a clinical diagnosis of asthma and 315 classified as a control. 280 (47.3%) were male children, with an average age of 11.0±2.3 years old. The spirometric values showed differences in the classifications of airway obstruction levels between the asthma and control groups (p=0.005), as well as in the response to bronchodilator use for FEV1/FVC (p=0.023). In the correlation assessment, there was no correlation between physical activity with anthropometric values, nor with pulmonary function, pre-and post-bronchodilator.Conclusions: The study demonstrates that there is no relationship between either anthropometric values or physical activity levels with pulmonary function of asthmatic children.
Highlights
Asthma is a chronic disease with a high prevalence, especially in children
Phase I: a characterization of the sample, with an abbreviated questionnaire applied to the guardians of the students, following the standards of the International Study of Asthma and Allergies in Childhood (ISAAC) study.[15]
It contained four questions for the identification of children with asthma and healthy children: 1) Has the student ever experienced wheezing in the chest or shortness of breath?; 2) Has the student ever had a medical diagnosis of asthma or bronchitis?; 3) In the last 12 months, did the student show wheezing or shortness of breath?; 4) In the last 12 months, did the student ever use medication for asthma or bronchitis?
Summary
Asthma is a chronic disease with a high prevalence, especially in children. As such, it is considered a worldwide public health problem. It is considered a worldwide public health problem It has several severity classifications, and only the correct diagnosis can indicate the best therapeutic method to be applied.[1] Generally, its diagnosis is made from clinical findings, with acute episodes, symptoms between crises, a personal and family history of the disease, evolution of the disease, reduced lung function and response to treatment.[1,2]. Asthmatic children doing regular physical activities show reduced levels of systemic inflammation, and it is widely recommended by specialists as part of prophylactic treatment.[6,7]
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