{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:38:40Z","timestamp":1760150320984,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2023,11,13]],"date-time":"2023-11-13T00:00:00Z","timestamp":1699833600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT) through R&amp;D Units funding","doi-asserted-by":"publisher","award":["UIDB\/05210\/2020","NORTE-01-0145-FEDER-000045"],"award-info":[{"award-number":["UIDB\/05210\/2020","NORTE-01-0145-FEDER-000045"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Fundo Europeu de Desenvolvimento Regional (FEDER) through the Programa Operacional Norte 2020","award":["UIDB\/05210\/2020","NORTE-01-0145-FEDER-000045"],"award-info":[{"award-number":["UIDB\/05210\/2020","NORTE-01-0145-FEDER-000045"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>Neuromuscular re-education through therapeutic exercise has a determinant role in chronic shoulder pain rehabilitation. Smartphones are an interesting strategy to extend the rehabilitation to a home-based scenario as it can increase the attraction and involvement of users by providing feedback. Objective: To analyze the concurrent validity of a smartphone\u2019s application based on 2D video analysis against the gold-standard 3D optoelectronic system for assessing movement quality during upper limb therapeutic exercises. Methods: Fifteen young adults were evaluated while executing two different shoulder exercises with a smartphone\u2019s 2D video and a 3D optoelectronic system simultaneously in two conditions: (1) with the supervision and instructions of a physiotherapist (guided exercise), and (2) without the feedback of the physiotherapist (non-guided exercise). The data obtained during the guided and non-guided exercises were compared to calculate the movement quality index based on the approximation of the non-guided exercise to the guided exercise for the head, trunk, and shoulder\u2019s range of movement. The agreement of the movement quality index assessed with the smartphone application and the optoelectronic system was carried out through Bland\u2013Altman analysis. Results: The Bland\u2013Altman analysis indicates the range of agreement and bias tendency. This tendency demonstrates that the percentage of difference between the two methods increases as the movement quality index decreases. Conclusions: There is agreement between the movement quality evaluated by a gold-standard method and the developed application, although the proposed method appears to have less sensitivity for evaluating movements with lower quality index.<\/jats:p>","DOI":"10.3390\/app132212282","type":"journal-article","created":{"date-parts":[[2023,11,13]],"date-time":"2023-11-13T08:35:52Z","timestamp":1699864552000},"page":"12282","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Smartphone-Based Video Analysis for Guiding Shoulder Therapeutic Exercises: Concurrent Validity for Movement Quality Control"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0949-0918","authenticated-orcid":false,"given":"Maria","family":"Lopes","sequence":"first","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Reabilita\u00e7\u00e3o (CIR), Escola Superior de Sa\u00fade, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 400, 4200-072 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7001-0157","authenticated-orcid":false,"given":"Ana","family":"Melo","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Reabilita\u00e7\u00e3o (CIR), Escola Superior de Sa\u00fade, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 400, 4200-072 Porto, Portugal"},{"name":"Centro de Investiga\u00e7\u00e3o em Atividade F\u00edsica, Sa\u00fade e Lazer (CIAFEL), Faculdade de Desporto, Universidade do Porto, Rua Dr. Pl\u00e1cido Costa, 91, 4200-450 Porto, Portugal"},{"name":"Laborat\u00f3rio de Biomec\u00e2nica do Porto (LABIOMEP), Universidade do Porto, Rua Dr. Pl\u00e1cido Costa, 91, 4200-450 Porto, Portugal"},{"name":"Centro Interdisciplinar de Investiga\u00e7\u00e3o Aplicada em Sa\u00fade (CIIAS), Escola Superior de Sa\u00fade, Instituto Polit\u00e9cnico de Set\u00fabal, Campus do IPS Estefanilha, 2914-503 Set\u00fabal, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8661-3080","authenticated-orcid":false,"given":"Bruno","family":"Cunha","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Reabilita\u00e7\u00e3o (CIR), Escola Superior de Sa\u00fade, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 400, 4200-072 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9528-1463","authenticated-orcid":false,"given":"Andreia","family":"Sousa","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Reabilita\u00e7\u00e3o (CIR), Escola Superior de Sa\u00fade, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 400, 4200-072 Porto, Portugal"},{"name":"Physiotherapy Department, Escola Superior de Sa\u00fade, Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 400, 4200-072 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"289","DOI":"10.4085\/1062-6050-49.5.05","article-title":"Range of motion as a predictor of clinical shoulder pain during recovery from delayed-onset muscle soreness","volume":"50","author":"Parr","year":"2015","journal-title":"J. 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