Maximal inspiratory pressure and inspiratory muscle endurance time in asthmatic children: reproducibility and relationship with pulmonary function tests

Pediatric Pulmonology
L SetteA Rossi

Abstract

Respiratory muscle strength, assessed by maximal inspiratory mouth pressure (PImax), and endurance, assessed as the length of time a subject could breathe against inspiratory resistance with a target mouth pressure > or = 70% of PI,max (Tlim), were measured in 20 symptomless asthmatic children, in order to assess the reproducibility of such measurements and their relationship to traditional pulmonary function tests or tests of bronchial hyperresponsiveness. After recording lung volumes and bronchial response to methacholine, PI,max and Tlim were measured twice in the same morning, with a 30-minute interval between each experimental trial. Mean (+/-SD) values of PI,max were 72.2 +/- 20.6 cmH2O in the first and 75.8 +/- 22.9 cmH2O in the second trial. Tlim was 154 +/- 65 and 164 +/- 66 seconds in the first and in the second trial respectively. A lack of agreement between different measurements was seen for both PI,max and Tlim. The coefficient of repeatability was 24.8 for PI,max and 92.3 for Tlim. A significant correlation between age and PI,max as well as between body mass index and PI,max were shown; no similar correlation was found for Tlim. No correlation was found between PI,max and Tlim in either of the two successive runs...Continue Reading

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Citations

Apr 9, 2016·The Journal of Asthma : Official Journal of the Association for the Care of Asthma·João Paulo Heinzmann-FilhoMárcio Vinícius Fagundes Donadio
Jun 21, 2011·Physiotherapy Theory and Practice·Mara Lisiane de Moraes Dos SantosAdriane Pires Batiston
Jul 12, 2012·Jornal brasileiro de pneumologia : publicaça̋o oficial da Sociedade Brasileira de Pneumologia e Tisilogia·Cilmery Marly Gabriel de OliveiraDirceu Solé

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