Physical Activity in Hospitalized Persons With Dementia: Feasibility and Validity of the MotionWatch 8

in Journal of Aging and Physical Activity
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Persons with dementia are at high risk for hospital-acquired disability, associated with low physical activity during hospitalizations. To determine the effectiveness of efforts to increase physical activity, a valid and reliable measurement approach is required. Data from an ongoing cluster randomized clinical trial examined the feasibility and validity of the MotionWatch 8 (MW8) triaxial actigraphy device. The sample included 321 participants of which 259 (81%) were willing to wear the MW8 for 24 hr. Regression analysis revealed that time in low activity, β = 0.17, t(255) = 2.9, p = .004, and time in moderate activity, β = 0.14, t(255) = 2.4, p = .017, measured by the MW8, were associated with participants’ physical function. Engagement in moderate physical activity was associated with return to baseline function at discharge (Wald χ2 = 4.10, df = 1, p = .043). The study provides preliminary support for the feasibility and validity of the MW8 in hospitalized persons with dementia.

Kuzmik, Arendacs, and Boltz are with the College of Nursing, The Pennsylvania State University, University Park, PA, USA. Resnick is with the School of Nursing, University of Maryland, Baltimore, MD, USA. Cacchione is with the University of Pennsylvania School of Nursing, Philadelphia, PA, USA.

Kuzmik (akuzmik@pennstatehealth.psu.edu) is corresponding author.
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