{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:34:41Z","timestamp":1787027681771,"version":"build-2736575974"},"reference-count":50,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T00:00:00Z","timestamp":1739836800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior \u2014Brasil (CAPES)","award":["001"],"award-info":[{"award-number":["001"]}]},{"name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior \u2014Brasil (CAPES)","award":["470853\/2014; CNPq\/MS\/SCTIE\/DECIT No. 34\/2014"],"award-info":[{"award-number":["470853\/2014; CNPq\/MS\/SCTIE\/DECIT No. 34\/2014"]}]},{"name":"National Council for Scientific and Technological Development (CNPq), Brazil","award":["001"],"award-info":[{"award-number":["001"]}]},{"name":"National Council for Scientific and Technological Development (CNPq), Brazil","award":["470853\/2014; CNPq\/MS\/SCTIE\/DECIT No. 34\/2014"],"award-info":[{"award-number":["470853\/2014; CNPq\/MS\/SCTIE\/DECIT No. 34\/2014"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ARM"],"abstract":"<jats:p>Aim: The aim of this study was to compare balance performance and electromyographic activity in individuals with COPD, with and without sarcopenia. Method: Thirty-five patients with COPD were classified with and without sarcopenia according to EWGSOP criteria. Balance was assessed using a force platform under four conditions: standing with feet apart and eyes opened (FHEO), eyes closed (FHEC), on an unstable surface (US), and on one leg (OLS). The surface electromyography activity of lower limb muscles and trunks was recorded. Additionally, the timed up and go test (TUG) and the Brief Balance Evaluation Systems Test (Brief-BESTest) were also utilized. Results: Under the FHEO, FHEC, and US conditions, individuals with sarcopenia demonstrated increased velocities, larger oscillation amplitudes, and greater center of pressure displacements under the US condition (p \u2264 0.02). They also showed a higher activation of the scalene, sternocleidomastoid, and abdominal muscles during OLS, along with a reduced activation of the tibialis anterior during OLS and US, and a decreased activation of the vastus medialis during FHEC and US (p \u2264 0.04). Furthermore, sarcopenic COPD patients exhibited poorer performance on the TUG and Brief-BESTest compared to their non-sarcopenic counterparts (p \u2264 0.02). Conclusions: Individuals with COPD and sarcopenia demonstrated greater instability in both bipedal stances and on unstable surfaces, as well as poorer performance in both dynamic and static balance assessments. Furthermore, these individuals exhibited reduced muscular activation in the lower limbs compared to those without sarcopenia.<\/jats:p>","DOI":"10.3390\/arm93010005","type":"journal-article","created":{"date-parts":[[2025,2,18]],"date-time":"2025-02-18T09:45:23Z","timestamp":1739871923000},"page":"5","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Are There Differences in Postural Control and Muscular Activity in Individuals with COPD and with and Without Sarcopenia?"],"prefix":"10.3390","volume":"93","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6173-1104","authenticated-orcid":false,"given":"Walter","family":"Sep\u00falveda-Loyola","sequence":"first","affiliation":[{"name":"Faculty of Health and Social Sciences, Universidad de Las Am\u00e9ricas, Santiago 7500975, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alejandro","family":"\u00c1lvarez-Bustos","sequence":"additional","affiliation":[{"name":"Biomedical Research Center Network for Frailty and Healthy Ageing (CIBERFES), Institute of Health Carlos III, 28029 Madrid, Spain"},{"name":"Instituto de Investigaci\u00f3n IdiPaz, 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Jos\u00e9","family":"Valenzuela-Fuenzalida","sequence":"additional","affiliation":[{"name":"Departamento de Morfolog\u00eda, Facultad de Medicina, Universidad Andr\u00e9s Bello, Santiago 8370186, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carla Mar\u00eda","family":"Ordinola Ram\u00edrez","sequence":"additional","affiliation":[{"name":"Instituto De Salud Integral Intercultural (ISI), Facultad de Ciencias de la Salud (FACISA), Universidad Nacional Toribio Rodr\u00edguez de Mendoza de Amazonas (UNTRM), Chachapoyas 01001, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4446-9295","authenticated-orcid":false,"given":"Carol","family":"Sald\u00edas Solis","sequence":"additional","affiliation":[{"name":"Escuela de Kinesiolog\u00eda, Facultad de Salud, Universidad Santo Tom\u00e1s, Temuco 4801127, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1483-5319","authenticated-orcid":false,"given":"Vanessa Suziane","family":"Probst","sequence":"additional","affiliation":[{"name":"Program of Masters and Doctoral Degree in Rehabilitation Sciences, Londrina State University (UEL) Londrina 86038440, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,18]]},"reference":[{"key":"ref_1","unstructured":"(2024, November 15). 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