{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T05:34:20Z","timestamp":1781242460355,"version":"3.54.1"},"reference-count":44,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2015,2,3]],"date-time":"2015-02-03T00:00:00Z","timestamp":1422921600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Respir Care"],"published-print":{"date-parts":[[2015,5]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND:<\/jats:title>\n                    <jats:p>Previous studies have evaluated the effectiveness of postural drainage (PD), percussion (PERC), the coughing technique (CT), and other types of coughing in subjects with bronchiectasis. However, the application times of these techniques and the quality of the expectorated mucus require further study. The aim of our study was to evaluate the effectiveness of PD, percussion, CT, and huffing in subjects with bronchiectasis and assess the quantity and quality of bronchial mucus produced (measurement of wet and dry weight and determination of viscoelastic properties).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS:<\/jats:title>\n                    <jats:p>Twenty-two subjects with stable bronchiectasis (6 men; mean age: 51.5 y) underwent 4 d of experimental study (CT, PD+CT, PD+PERC+CT, and PD+huffing). The techniques were performed in 3 20-min periods separated by 10 min of rest. Before performing any technique (baseline) and after each period (30, 60, and 90 min), expectorated mucus was collected for analysis of viscoelasticity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS:<\/jats:title>\n                    <jats:p>\n                      A significant increase in the dry weight\/wet weight ratio was found after 60 min of PD+PERC+CT (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .01) and 90 min of PD+huffing (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .03) and PD+PERC+CT (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .007) in comparison with CT. PD+PERC+CT and PD+huffing led to the greatest removal of viscoelastic mucus at 60 min (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .02 and\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .002, respectively) and continued to do so at 90 min (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .02 and\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .01, respectively) in comparison with CT. An interaction effect was found, as all techniques led to a greater removal of elastic mucus in comparison with CT at 60 min (PD+CT,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .001; PD+PERC+CT,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001; PD+huffing,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001), but only PD+PERC+CT and PD+huffing led to a greater removal of elastic mucus than CT at 90 min (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001 and\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .005, respectively).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS:<\/jats:title>\n                    <jats:p>PD+PERC+CT and PD+huffing performed similarly regarding the removal of viscoelastic mucus in 2 and 3 20-min periods separated by 10 min of rest. PD+PERC+CT led to the greatest removal of mucus in the shortest period (2 20-min periods separated by 10 min of rest).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4187\/respcare.02429","type":"journal-article","created":{"date-parts":[[2015,2,4]],"date-time":"2015-02-04T00:07:09Z","timestamp":1423008429000},"page":"724-730","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Viscoelastic Properties of Bronchial Mucus After Respiratory Physiotherapy in Subjects With Bronchiectasis"],"prefix":"10.1177","volume":"60","author":[{"given":"Ercy MC","family":"Ramos","sequence":"first","affiliation":[{"name":"Physical Therapy Department, Presidente Prudente School of Science and Technology, Universidade Estadual Paulist, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dionei","family":"Ramos","sequence":"additional","affiliation":[{"name":"Physical Therapy Department, Presidente Prudente School of Science and Technology, Universidade Estadual Paulist, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Graciane L","family":"Moreira","sequence":"additional","affiliation":[{"name":"Physical Therapy Department, Presidente Prudente School of Science and Technology, Universidade Estadual Paulist, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariangela","family":"Macchione","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo University, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eliane T","family":"Guimar\u00e3es","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo University, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fernanda Maria M","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Physical Therapy Department, Presidente Prudente School of Science and Technology, Universidade Estadual Paulist, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Altay Alves Lino","family":"de Souza","sequence":"additional","affiliation":[{"name":"Psychobiology Department, Federal University of S\u00e3o Paulo, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulo HN","family":"Saldiva","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo University, S\u00e3o Paulo"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 R","family":"Jardim","sequence":"additional","affiliation":[{"name":"Pulmonology Department, Federal University of S\u00e3o Paulo, S\u00e3o Paulo, Brazil."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2015,2,3]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S6133"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccm.2007.02.014"},{"issue":"11","key":"e_1_3_2_4_2","first-page":"629","article-title":"[Diagnosis and treatment of bronchiectasis","volume":"44","author":"Vendrell M","year":"2008","unstructured":"Vendrell M, , de Gracia J, , Olveira C, , Mart\u00ednez MA, , Gir\u00f3n R, , M\u00e1iz L, et al. 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