Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12188/20986
DC Field | Value | Language |
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dc.contributor.author | Marques, Diogo Luís | en_US |
dc.contributor.author | Pereira Neiva, Henrique | en_US |
dc.contributor.author | Pires, Ivan Miguel | en_US |
dc.contributor.author | Zdravevski, Eftim | en_US |
dc.contributor.author | Mihajlov, Martin | en_US |
dc.contributor.author | Garcia, Nuno M | en_US |
dc.contributor.author | Ruiz-Cárdenas, Juan Diego | en_US |
dc.contributor.author | Almeida Marinho, Daniel | en_US |
dc.contributor.author | Cardoso Marques, Mário | en_US |
dc.date.accessioned | 2022-07-18T08:15:06Z | - |
dc.date.available | 2022-07-18T08:15:06Z | - |
dc.date.issued | 2021-03-15 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12188/20986 | - |
dc.description.abstract | Smartphone sensors have often been proposed as pervasive measurement systems to assess mobility in older adults due to their ease of use and low-cost. This study analyzes a smartphone-based application’s validity and reliability to quantify temporal variables during the single sit-to-stand test with institutionalized older adults. Forty older adults (20 women and 20 men; 78.9 ± 8.6 years) volunteered to participate in this study. All participants performed the single sit-to-stand test. Each sit-to-stand repetition was performed after an acoustic signal was emitted by the smartphone app. All data were acquired simultaneously with a smartphone and a digital video camera. The measured temporal variables were stand-up time and total time. The relative reliability and systematic bias inter-device were assessed using the intraclass correlation coefficient (ICC) and Bland-Altman plots. In contrast, absolute reliability was assessed using the standard error of measurement and coefficient of variation (CV). Inter-device concurrent validity was assessed through correlation analysis. The absolute percent error (APE) and the accuracy were also calculated. The results showed excellent reliability (ICC = 0.92–0.97; CV = 1.85–3.03) and very strong relationships inter-devices for the stand-up time (r = 0.94) and the total time (r = 0.98). The APE was lower than 6%, and the accuracy was higher than 94%. Based on our data, the findings suggest that the smartphone application is valid and reliable to collect the stand-up time and total time during the single sit-to-stand test with older adults. | en_US |
dc.publisher | MDPI | en_US |
dc.relation.ispartof | Sensors | en_US |
dc.subject | mobile application; accelerometer sensor; stand-up time; total time; aging | en_US |
dc.title | An experimental study on the validity and reliability of a smartphone application to acquire temporal variables during the single sit-to-stand test with older adults | en_US |
dc.type | Article | en_US |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
crisitem.author.dept | Faculty of Economics | - |
crisitem.author.dept | Faculty of Computer Science and Engineering | - |
Appears in Collections: | Faculty of Computer Science and Engineering: Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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sensors-21-02050.pdf | 1.09 MB | Adobe PDF | View/Open |
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