Reference values for inspiratory muscle endurance in healthy children and adolescents
Taís Woszezenki, Cristhiele
Heinzmann-Filho, João Paulo
Vendrusculo, Fernanda Maria
Piva, Taila Cristina
Fagundes Donadio, Márcio Vinícius
Aims: To generate reference values for two inspiratory muscle endurance (IME) protocols in healthy children and adolescents. Materials and methods: This is an observational, cross-sectional study, in healthy children and adolescents from 4 to 18 years of age. Weight, height, maximal inspiratory pressure (MIP) and IME were measured using two protocols. A fixed load of 30% of MIP with a 10% increment every 2 minutes was used in the incremental threshold loading protocol. As for the maximal loading protocol, a fixed load of 70% of MIP was used and the time limit (Tlim) achieved until fatigue was measured. Results: A total of 462 participants were included, 281 corresponding to the incremental loading protocol and 181 to maximal loading. There were moderate and positive correlations between IME and age, MIP, weight and height in the incremental threshold loading. However, the regression model demonstrated that MIP and age were the best variables to predict the IME. Otherwise, weak and positive correlations with age, weight and height were found in the maximal loading. Only age and height influenced endurance in the regression model. The predictive power (r2) of the incremental threshold loading protocol was 0.65, while the maximal loading was 0.15. The reproducibility measured by the intraclass correlation coefficient (ICC) was higher in the incremental loading (0.96) compared to the maximal loading test (0.69). Conclusion: IME in healthy children and adolescents can be explained by age, height and MIP. The incremental threshold loading protocol showed more reliable results and should be the model of choice to evaluate IME in the pediatric age group.
61 - Medicina
Resistència muscular inspiratòria
Resistencia muscular inspiratoria
Inspiratory muscular endurance
Public Library of Science
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Taís Woszezenki, Cristhiele; Heinzmann-Filho, João Paulo; Vendrusculo, Fernanda Maria [et al.]. Reference values for inspiratory muscle endurance in healthy children and adolescents. PLoS ONE, 12(1), e0170696. DOI: 10.1371/journal. pone.0170696.
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- Ciències de la Salut 
© 2017 Woszezenki et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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