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
References
Jan 1, 1979·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·D GrossP T Macklem
Jan 1, 1992·Chest·S NavaC Rampulla
Sep 26, 1991·The New England Journal of Medicine·T SimilowskiF Bellemare
Oct 1, 1990·The Journal of Physiology·A D ShortD J Maxwell
Jun 1, 1990·The American Review of Respiratory Disease·L LandsA L Coates
Feb 8, 1986·Lancet·J M Bland, D G Altman
May 1, 1988·Chest·M H LavietesG Sunderam
May 1, 1985·Journal of Applied Physiology·D Laporta, A Grassino
Jul 1, 1987·The American Review of Respiratory Disease
Nov 1, 1986·The American Review of Respiratory Disease·D K McKenzie, S C Gandevia
May 1, 1985·The Journal of Clinical Investigation·D F Rochester
Jan 1, 1970·The Journal of Infectious Diseases·R W PutschE Wolinsky
Jul 1, 1984·Thorax·S H WilsonS G Spiro
Jan 1, 1983·Respiration Physiology·C Gaultier, R Zinman
Mar 1, 1982·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·B G Nickerson, T G Keens
Mar 1, 1981·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·M AubierC Roussos
Mar 1, 1981·Thorax·J MoxhamM Green
Apr 20, 1995·The New England Journal of Medicine·B Orvell
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