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Calibration and Cro...
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
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- Migueles, Jairo Hidalgo (författare)
- Linköpings universitet,Avdelningen för samhälle och hälsa,Medicinska fakulteten,Univ Granada, Spain
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- Cadenas-Sanchez, Cristina (författare)
- Univ Granada, Spain; Univ Publ Navarra, Spain
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- Alcantara, Juan M. A. (författare)
- Univ Granada, Spain
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- Leal-Martin, Javier (författare)
- Univ Castilla La Mancha, Spain; CIBER Frailty & Hlth Aging CIBERFES, Spain
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- Manas, Asier (författare)
- Univ Castilla La Mancha, Spain; CIBER Frailty & Hlth Aging CIBERFES, Spain
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- Ara, Ignacio (författare)
- Univ Castilla La Mancha, Spain; CIBER Frailty & Hlth Aging CIBERFES, Spain
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- Glynn, Nancy W. (författare)
- Univ Pittsburgh, PA 15260 USA
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- Shiroma, Eric J. (författare)
- NIH, MD 20892 USA
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(creator_code:org_t)
- 2021-05-11
- 2021
- Engelska.
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Ingår i: Sensors. - : MDPI. - 1424-8220. ; 21:10
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Accelerometers 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 cut-points 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 (cross-validation: 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 non-dominant 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 (cross-validation: 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.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- sedentary behavior; movement; light intensity; exercise; sitting; elderly; counts; ENMO
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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