{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T18:47:26Z","timestamp":1771613246616,"version":"3.50.1"},"reference-count":18,"publisher":"AOSIS","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Background: Body positioning and diaphragmatic breathing may alter respiratory pattern and reduce dyspnoea in people with chronic obstructive pulmonary disease (COPD).Objectives: To determine the effect of positioning and diaphragmatic breathing on respiratory muscle activity in a convenience sample of people with COPD, using surface electromyography (sEMG).Methods: This prospective descriptive study recorded sEMG measurements at baseline, after upright positioning, during diaphragmatic breathing and 5 minutes thereafter. Vital signs and levels of perceived dyspnoea were recorded at baseline and at the end of the study. Data were analysed using repeated measures ANOVAs with post hoc t-tests for dependent and independent variables.Results: Eighteen participants (13 male; mean \u00b1 standard deviation age 59.0 \u00b1 7.9 years) were enrolled. Total diaphragmatic activity did not change with repositioning (p = 0.2), but activity increased from 7.3 \u00b1 4.2 \u00b5V at baseline to 10.0 \u00b1 3.3 \u00b5V during diaphragmatic breathing (p = 0.006) with a subsequent reduction from baseline to 6.1 \u00b1 3.5 \u00b5V (p = 0.007) at the final measurement. There was no change in intercostal muscle activity at different time points (p = 0.8). No adverse events occurred. Nutritional status significantly affected diaphragmatic activity (p = 0.004), with participants with normal body mass index (BMI) showing the greatest response to both positioning and diaphragmatic breathing. There were no significant changes in vital signs, except for a reduction in systolic\/diastolic blood pressure from 139.6 \u00b1 18.7\/80.4 \u00b1 13.0 to 126.0 \u00b1 15.1\/75.2 \u00b1 14.7 (p &lt; 0.05).Conclusion: A single session of diaphragmatic breathing transiently improved diaphragmatic muscle activity, with no associated reduction in dyspnoea.Keywords: diaphragmatic breathing, positioning, chronic obstructive pulmonary disease, physiotherapy, electromyography, breathing exercises<\/jats:p>","DOI":"10.4102\/sajp.v72i1.315","type":"journal-article","created":{"date-parts":[[2016,6,29]],"date-time":"2016-06-29T10:07:04Z","timestamp":1467194824000},"source":"Crossref","is-referenced-by-count":10,"title":["The effect of positioning and diaphragmatic breathing exercises on respiratory muscle activity in people with chronic obstructive pulmonary disease"],"prefix":"10.4102","volume":"72","author":[{"given":"Brenda","family":"Morrow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jarred","family":"Brink","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samantha","family":"Grace","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lisa","family":"Pritchard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alison","family":"Lupton-Smith","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2580","published-online":{"date-parts":[[2016,2,26]]},"reference":[{"key":"ref0001","first-page":"63","volume":"101","author":"Abdool-Gaffar","year":"2011","journal-title":"South African Medical Journal"},{"issue":"2","key":"ref0002","first-page":"83","volume":"51","author":"Bhatt","year":"2009","journal-title":"The Indian Journal of Chest Diseases & Allied Sciences"},{"key":"ref0003","doi-asserted-by":"publisher","DOI":"10.1097\/00008483-200201000-00002"},{"key":"ref0004","doi-asserted-by":"publisher","DOI":"10.1152\/japplphysiol.00914.2003"},{"key":"ref0005","doi-asserted-by":"publisher","DOI":"10.1051\/rnd:19980204"},{"issue":"4","key":"ref0006","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1177\/1479972311424296","volume":"8","author":"Fernandes","year":"2011","journal-title":"Chronic Respiratory Disease"},{"key":"ref0007","author":"Global Initiative for Chronic Obstructive Lung Disease","year":"2015","journal-title":"Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease"},{"key":"ref0008","doi-asserted-by":"publisher","DOI":"10.1682\/JRRD.2003.10.0025"},{"key":"ref0009","doi-asserted-by":"publisher","DOI":"10.1191\/1479972304cd020rs"},{"issue":"4","key":"ref0010","first-page":"1136","volume":"151","author":"Gosselink","year":"1995","journal-title":"American Journal of Respiratory and Critical Care Medicine"},{"key":"ref0011","first-page":"CD008250","volume":"10","author":"Holland","year":"2012","journal-title":"The Cochrane Database of Systematic Reviews"},{"key":"ref0012","doi-asserted-by":"publisher","DOI":"10.1016\/S0099-1767(00)90093-X"},{"issue":"6","key":"ref0013","doi-asserted-by":"crossref","first-page":"1955","DOI":"10.1152\/jappl.2000.88.6.1955","volume":"88","author":"Maarsingh","year":"2000","journal-title":"Journal of Applied Physiology"},{"issue":"1","key":"ref0014","first-page":"2","volume":"4","author":"Mikelsons","year":"2008","journal-title":"Respiratory Medicine"},{"issue":"4","key":"ref0015","doi-asserted-by":"crossref","first-page":"366","DOI":"10.1093\/ptj\/85.4.366","volume":"85","author":"Sharma","year":"2005","journal-title":"Physical Therapy"},{"key":"ref0016","doi-asserted-by":"publisher","DOI":"10.1556\/036.102.2015.2.7"},{"key":"ref0017","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.98.11020408"},{"key":"ref0018","doi-asserted-by":"publisher","DOI":"10.1016\/j.apmr.2011.11.026"}],"container-title":["South African Journal of Physiotherapy"],"original-title":[],"link":[{"URL":"http:\/\/www.sajp.co.za\/index.php\/sajp\/article\/viewFile\/315\/346","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,9,23]],"date-time":"2020-09-23T02:58:23Z","timestamp":1600829903000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.sajp.co.za\/index.php\/sajp\/article\/view\/315"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,2,26]]},"references-count":18,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2016,2,26]]}},"URL":"https:\/\/doi.org\/10.4102\/sajp.v72i1.315","relation":{},"ISSN":["2410-8219","0379-6175"],"issn-type":[{"value":"2410-8219","type":"electronic"},{"value":"0379-6175","type":"print"}],"subject":[],"published":{"date-parts":[[2016,2,26]]}}}