{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:06:22Z","timestamp":1760148382841,"version":"build-2065373602"},"reference-count":63,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,4,26]],"date-time":"2023-04-26T00:00:00Z","timestamp":1682467200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Bioengineering"],"abstract":"<jats:p>Upper-limb position-sustained tasks (ULPSIT) are involved in several activities of daily living and are associated with high metabolic and ventilatory demand and fatigue. In older people, this can be critical to the performance of daily living activities, even in the absence of a disability. Objectives: To understand the ULPSIT effects on upper-limb (UL) kinetics and performance fatigability in the elderly. Methods: Thirty-one (31) elderly participants (72.61 \u00b1 5.23 years) performed an ULPSIT. The UL average acceleration (AA) and performance fatigability were measured using an inertial measurement unit (IMU) and time-to-task failure (TTF). Results: The findings showed significant changes in AA in the X- and Z-axes (p &lt; 0.05). AA differences in women started earlier in the baseline cutoff in the X-axis, and in men, started earlier between cutoffs in the Z-axis. TTF was positively related to AA in men until 60% TTF. Conclusions: ULPSIT produced changes in AA behavior, indicative of movement of the UL in the sagittal plane. AA behavior is sex related and suggests higher performance fatigability in women. Performance fatigability was positively related to AA only in men, where movement adjustments occurred in an early phase, though with increased activity time.<\/jats:p>","DOI":"10.3390\/bioengineering10050526","type":"journal-article","created":{"date-parts":[[2023,4,26]],"date-time":"2023-04-26T04:42:54Z","timestamp":1682484174000},"page":"526","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Upper-Limb Kinematic Behavior and Performance Fatigability of Elderly Participants Performing an Isometric Task: A Quasi-Experimental Study"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8700-7031","authenticated-orcid":false,"given":"Helena","family":"Silva-Migueis","sequence":"first","affiliation":[{"name":"Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coru\u00f1a, 15403 Ferrol, Spain"},{"name":"Physiotherapy Department, Escola Superior de Sa\u00fade da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0926-5200","authenticated-orcid":false,"given":"Eva Mar\u00eda","family":"Mart\u00ednez-Jim\u00e9nez","sequence":"additional","affiliation":[{"name":"Facultad de Enfermer\u00eda, Fisioterapia y Podolog\u00eda, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8537-425X","authenticated-orcid":false,"given":"Israel","family":"Casado-Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Facultad de Enfermer\u00eda, Fisioterapia y Podolog\u00eda, Universidad Complutense de Madrid, 28040 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6895-372X","authenticated-orcid":false,"given":"Adriano","family":"Dias","sequence":"additional","affiliation":[{"name":"Department of Public Health, Graduate Program in Collective\/Public Health, Botucatu Medical School, Universidade Estadual Paulista\/UNESP, Botucatu 18610-307, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0445-8399","authenticated-orcid":false,"given":"Ana J\u00falia","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coru\u00f1a, 15403 Ferrol, Spain"},{"name":"Physiotherapy Department, Escola Superior de Sa\u00fade da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3723-5861","authenticated-orcid":false,"given":"Rodrigo B.","family":"Martins","sequence":"additional","affiliation":[{"name":"Physiotherapy Department, Escola Superior de Sa\u00fade da Cruz Vermelha Portuguesa-Lisboa, 1300-125 Lisbon, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4494-9421","authenticated-orcid":false,"given":"Jo\u00e3o Marcos","family":"Bernardes","sequence":"additional","affiliation":[{"name":"Department of Public Health, Graduate Program in Collective\/Public Health, Botucatu Medical School, Universidade Estadual Paulista\/UNESP, Botucatu 18610-307, SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9818-6290","authenticated-orcid":false,"given":"Daniel","family":"L\u00f3pez-L\u00f3pez","sequence":"additional","affiliation":[{"name":"Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Industrial Campus of Ferrol, Universidade da Coru\u00f1a, 15403 Ferrol, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9053-7730","authenticated-orcid":false,"given":"Juan","family":"G\u00f3mez-Salgado","sequence":"additional","affiliation":[{"name":"Departamento de Sociolog\u00eda, Trabajo Social y Salud P\u00fablica, Universidad de Huelva, 21004 Huelva, Spain"},{"name":"Safety and Health Postgraduate Programme, Universidad Esp\u00edritu Santo, Guayaquil 092301, Ecuador"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"251","DOI":"10.3233\/IES-210215","article-title":"Variations in Upper Limb and Trunk Muscles Activation during Isometric Exercises with or without Exertion of Control","volume":"30","author":"Murofushi","year":"2022","journal-title":"Isokinet. 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