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dc.contributor.authorMigueles Hidalgo, Jairo 
dc.contributor.authorCadenas Sánchez, Cristina 
dc.contributor.authorAlcántara Alcántara, Juan Manuel
dc.identifier.citationMigueles, J.H.; Cadenas-Sanchez, C.; Alcantara, J.M.A.; Leal-Martín, J.; Mañas, A.; Ara, I.; Glynn, N.W.; Shiroma, E.J. Calibration and Cross-Validation of Accelerometer Cut-Points to Classify Sedentary Time and Physical Activity from Hip and Non-Dominant and Dominant Wrists in Older Adults. Sensors 2021, 21, 3326. https://
dc.description.abstractAccelerometers’ accuracy for sedentary time (ST) and moderate-to-vigorous physical activity (MVPA) classification depends on accelerometer placement, data processing, activities, and sample characteristics. As intensities differ by age, this study sought to determine intensity cutpoints at various wear locations people more than 70 years old. Data from 59 older adults were used for calibration and from 21 independent participants for cross-validation purposes. Participants wore accelerometers on their hip and wrists while performing activities and having their energy expenditure measured with portable calorimetry. ST and MVPA were defined as ≤1.5 metabolic equivalents (METs) and ≥3 METs (1 MET = 2.8 mL/kg/min), respectively. Receiver operator characteristic (ROC) analyses showed fair-to-good accuracy (area under the curve [AUC] = 0.62–0.89). ST cut-points were 7 mg (cross-validation: sensitivity = 0.88, specificity = 0.80) and 1 count/5 s (crossvalidation: sensitivity = 0.91, specificity = 0.96) for the hip; 18 mg (cross-validation: sensitivity = 0.86, specificity = 0.86) and 102 counts/5 s (cross-validation: sensitivity = 0.91, specificity = 0.92) for the nondominant wrist; and 22 mg and 175 counts/5 s (not cross-validated) for the dominant wrist. MVPA cut-points were 14 mg (cross-validation: sensitivity = 0.70, specificity = 0.99) and 54 count/5 s (crossvalidation: sensitivity = 1.00, specificity = 0.96) for the hip; 60 mg (cross-validation: sensitivity = 0.83, specificity = 0.99) and 182 counts/5 s (cross-validation: sensitivity = 1.00, specificity = 0.89) for the non-dominant wrist; and 64 mg and 268 counts/5 s (not cross-validated) for the dominant wrist. These cut-points can classify ST and MVPA in older adults from hip- and wrist-worn accelerometers.es_ES
dc.description.sponsorshipUniversity of Pittsburgh Claude D. Pepper Older Americans Independence Center, Research Registry and Developmental Pilot Grant (no. NIH P30 AG024827)es_ES
dc.description.sponsorshipNational Institute on Aging Professional Services Contract HHSN271201100605P supported AREA/DECOSes_ES
dc.description.sponsorshipIntramural Research Program of the National Institutes of Health, National Institute on Aging, and by research grants AG036594, and AG000181 from the National Institutes of Healthes_ES
dc.description.sponsorshipBiomedical Research Networking Center on Frailty and Healthy Aging (CIBERFES)es_ES
dc.description.sponsorshipFEDER funds from the European Union (CB16/10/00477)es_ES
dc.description.sponsorshipSpanish Ministry of Science and Innovation (FJC2018-037925-I)es_ES
dc.description.sponsorshipPlan Propio de Investigación 2020 from the University of Granada-Programa Contratos-Puentees_ES
dc.rightsAtribución 3.0 España*
dc.subjectSedentary behaviorses_ES
dc.subjectLight intensityes_ES
dc.subjectExercise es_ES
dc.titleCalibration and Cross-Validation of Accelerometer Cut-Points to Classify Sedentary Time and Physical Activity from Hip and Non-Dominant and Dominant Wrists in Older Adultses_ES

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Atribución 3.0 España
Except where otherwise noted, this item's license is described as Atribución 3.0 España