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dc.contributor.authorConi, A.
dc.contributor.authorMellone, S.
dc.contributor.authorColpo, M.
dc.date.accessioned2019-09-13T14:49:28Z
dc.date.available2019-09-13T14:49:28Z
dc.date.issued2019
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85066851500&doi=10.3390%2fs19102227&partnerID=40&md5=31b070639d2792f1189609ad86ba48ec
dc.identifier.urihttp://hdl.handle.net/10713/10549
dc.description.abstractPhysical capability (PC) is conventionally evaluated through performance-based clinical assessments. We aimed to transform a battery of sensor-based functional tests into a clinically applicable assessment tool. We used Exploratory Factor Analysis (EFA) to uncover the underlying latent structure within sensor-based measures obtained in a population-based study. Three hundred four community-dwelling older adults (163 females, 80.9 ± 6.4 years), underwent three functional tests (Quiet Stand, QS, 7-meter Walk, 7MW and Chair Stand, CST) wearing a smartphone at the lower back. Instrumented tests provided 73 sensor-based measures, out of which EFA identified a fifteen-factor model. A priori knowledge and the associations with health-related measures supported the functional interpretation and construct validity analysis of the factors, and provided the basis for developing a conceptual model of PC. For example, the “Walking Impairment” domain obtained from the 7MW test was significantly associated with measures of leg muscle power, gait speed, and overall lower extremity function. To the best of our knowledge, this is the first time that a battery of functional tests, instrumented through a smartphone, is used for outlining a sensor-based conceptual model, which could be suitable for assessing PC in older adults and tracking its changes over time. Copyright 2019 by the authors. Licensee MDPI, Basel, Switzerland.en_US
dc.description.sponsorshipThe research leading to these results has been funded by the European Union—Seventh Framework Programme (FP7/2007–2013) under grant agreement n. 288940 (FARSEEING project).en_US
dc.description.urihttps://doi.org/10.3390/s19102227en_US
dc.language.isoen-USen_US
dc.publisherMDPI AGen_US
dc.relation.ispartofSensors (Switzerland)
dc.subjectExploratory factor analysisen_US
dc.subjectInstrumented functional testen_US
dc.subjectOlder adultsen_US
dc.subjectPhysical capability assessmenten_US
dc.titleAn exploratory factor analysis of sensor-based physical capability assessmenten_US
dc.typeArticleen_US
dc.identifier.doi10.3390/s19102227
dc.identifier.pmid31091794


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