{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T01:48:53Z","timestamp":1767836933195,"version":"3.49.0"},"reference-count":40,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2021,4,18]],"date-time":"2021-04-18T00:00:00Z","timestamp":1618704000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pediatric Pulmonology"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess thoracoabdominal asynchrony (TAA) and inspiratory paradoxical motion at different positionings in subjects with Duchenne muscular dystrophy (DMD) versus healthy subjects during quiet spontaneous breathing (QB) and cough.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This is a case control study with a matched\u2010pair design. We assessed 14 DMD subjects and 12 controls using optoelectronic plethysmography (OEP) during QB and spontaneous cough in 3 positions: supine, supine with headrest raised at 45\u00b0, and sitting with back support at 80\u00b0. The TAA was assessed using phase angle (\u03b8) between upper (RCp) and lower rib cage (RCa) and abdomen (AB), as well as the percentage of inspiratory time the RCp (IP<jats:sub>RCp<\/jats:sub>), RCa (IP<jats:sub>RCa<\/jats:sub>), and AB (IP<jats:sub>AB<\/jats:sub>) moved in opposite directions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>During cough, DMD group showed higher RCp and RCa \u03b8 (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.05), RCp and AB \u03b8 (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.05) in supine and 45\u00b0 positions, and higher RCp and Rca \u03b8 (<jats:italic>p<\/jats:italic>\u2009=\u2009.006) only in supine position compared with controls. Regarding the intragroup analysis, during cough, DMD group presented higher RCp and AB \u03b8 (<jats:italic>p<\/jats:italic>\u2009=\u2009.02) and RCa and AB \u03b8 (<jats:italic>p<\/jats:italic>\u2009=\u2009.002) in supine and higher RCa and AB \u03b8 (<jats:italic>p<\/jats:italic>\u2009=\u2009.002) in 45\u00b0 position when compared to 80\u00b0. Receiver operating characteristic curve analyzes were able to discriminate TAA between controls and DMD in RCa supine position (area under the curve: 0.81, sensibility: 78.6% and specificity: 91.7%, <jats:italic>p<\/jats:italic>\u2009=\u2009.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Subjects with DMD yields TAA with insufficient deflation of chest wall compartments and rib cage distortion during cough, by noninvasive assessment.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ppul.25412","type":"journal-article","created":{"date-parts":[[2021,4,18]],"date-time":"2021-04-18T20:14:25Z","timestamp":1618776865000},"page":"2136-2145","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Thoracoabdominal asynchrony and paradoxical motion in Duchenne muscular dystrophy and healthy subjects during cough: A case control study"],"prefix":"10.1002","volume":"56","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5447-7873","authenticated-orcid":false,"given":"Layana","family":"Marques","sequence":"first","affiliation":[{"name":"Departamento de Fisioterapia, Pneumo CardioVascular Lab\/HUOL, Hospital Universit\u00e1rio Onofre Lopes, Empresa Brasileira de Servi\u00e7os Hospitalares (EBSERH) Universidade Federal do Rio Grande do Norte  Natal Rio Grande do Norte Brasil"},{"name":"Laborat\u00f3rio de Inova\u00e7\u00e3o Tecnol\u00f3gica em Reabilita\u00e7\u00e3o, Departamento de Fisioterapia Universidade Federal do Rio Grande do Norte  Natal Rio Grande do Norte Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4938-7018","authenticated-orcid":false,"given":"Guilherme Augusto de Freitas","family":"Fregonezi","sequence":"additional","affiliation":[{"name":"Departamento de Fisioterapia, Pneumo CardioVascular Lab\/HUOL, Hospital Universit\u00e1rio Onofre Lopes, 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