{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T05:43:41Z","timestamp":1771307021921,"version":"3.50.1"},"reference-count":99,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2021,1,4]],"date-time":"2021-01-04T00:00:00Z","timestamp":1609718400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Centro Internacional sobre el envejecimiento, CENIE. Interreg V-A Espa\u00f1a-Portugal (POCTEP)","award":["0348_CIE_6_E"],"award-info":[{"award-number":["0348_CIE_6_E"]}]},{"name":"Secretar\u00eda de Educaci\u00f3n Superior, Ciencia, Tecnolog\u00eda e Innovaci\u00f3n (SENESCYT)","award":["Becas internacionales de posgrado 2019"],"award-info":[{"award-number":["Becas internacionales de posgrado 2019"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Resting tremor in Parkinson\u2019s disease (PD) is one of the most distinctive motor symptoms. Appropriate symptom monitoring can help to improve management and medical treatments and improve the patients\u2019 quality of life. Currently, tremor is evaluated by physical examinations during clinical appointments; however, this method could be subjective and does not represent the full spectrum of the symptom in the patients\u2019 daily lives. In recent years, sensor-based systems have been used to obtain objective information about the disease. However, most of these systems require the use of multiple devices, which makes it difficult to use them in an ambulatory setting. This paper presents a novel approach to evaluate the amplitude and constancy of resting tremor using triaxial accelerometers from consumer smartwatches and multitask classification models. These approaches are used to develop a system for an automated and accurate symptom assessment without interfering with the patients\u2019 daily lives. Results show a high agreement between the amplitude and constancy measurements obtained from the smartwatch in comparison with those obtained in a clinical assessment. This indicates that consumer smartwatches in combination with multitask convolutional neural networks are suitable for providing accurate and relevant information about tremor in patients in the early stages of the disease, which can contribute to the improvement of PD clinical evaluation, early detection of the disease, and continuous monitoring.<\/jats:p>","DOI":"10.3390\/s21010291","type":"journal-article","created":{"date-parts":[[2021,1,4]],"date-time":"2021-01-04T08:35:19Z","timestamp":1609749319000},"page":"291","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":81,"title":["Automatic Resting Tremor Assessment in Parkinson\u2019s Disease Using Smartwatches and Multitask Convolutional Neural Networks"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9968-5024","authenticated-orcid":false,"given":"Luis","family":"Sigcha","sequence":"first","affiliation":[{"name":"Instrumentation and Applied Acoustics Research Group (I2A2), ETSI Industriales, Universidad Polit\u00e9cnica de Madrid, Campus Sur UPM, Ctra. Valencia, Km 7, 28031 Madrid, Spain"},{"name":"ALGORITMI Research Center, School of Engineering, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0970-0452","authenticated-orcid":false,"given":"Ignacio","family":"Pav\u00f3n","sequence":"additional","affiliation":[{"name":"Instrumentation and Applied Acoustics Research Group (I2A2), ETSI Industriales, Universidad Polit\u00e9cnica de Madrid, Campus Sur UPM, Ctra. Valencia, Km 7, 28031 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9348-8038","authenticated-orcid":false,"given":"N\u00e9lson","family":"Costa","sequence":"additional","affiliation":[{"name":"ALGORITMI Research Center, School of Engineering, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7440-8787","authenticated-orcid":false,"given":"Susana","family":"Costa","sequence":"additional","affiliation":[{"name":"ALGORITMI Research Center, School of Engineering, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"given":"Miguel","family":"Gago","sequence":"additional","affiliation":[{"name":"Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9421-9123","authenticated-orcid":false,"given":"Pedro","family":"Arezes","sequence":"additional","affiliation":[{"name":"ALGORITMI Research Center, School of Engineering, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7847-8707","authenticated-orcid":false,"given":"Juan Manuel","family":"L\u00f3pez","sequence":"additional","affiliation":[{"name":"Instrumentation and Applied Acoustics Research Group (I2A2), ETSI Industriales, Universidad Polit\u00e9cnica de Madrid, Campus Sur UPM, Ctra. Valencia, Km 7, 28031 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1699-7389","authenticated-orcid":false,"given":"Guillermo","family":"De Arcas","sequence":"additional","affiliation":[{"name":"Instrumentation and Applied Acoustics Research Group (I2A2), ETSI Industriales, Universidad Polit\u00e9cnica de Madrid, Campus Sur UPM, Ctra. Valencia, Km 7, 28031 Madrid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"a008862","DOI":"10.1101\/cshperspect.a008862","article-title":"The history of Parkinson\u2019s disease: Early clinical descriptions and neurological therapies","volume":"1","author":"Goetz","year":"2011","journal-title":"Cold Spring Harb. Perspect. 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