J Aging Phys Act. 2021 Oct 1;29(5):852-857. doi: 10.1123/japa.2020-0275. Epub 2021 Apr 15.
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.
痴呆症患者在住院期间身体活动量低，因此有很高的医院获得性残疾风险。为了确定增加身体活动的效果，需要一种有效且可靠的测量方法。正在进行的一项集群随机临床试验的数据，检验了 MotionWatch 8（MW8）三轴动作记录仪设备的可行性和有效性。该样本包括 321 名参与者，其中 259 名（81%）愿意佩戴 MW8 进行 24 小时监测。回归分析显示，MW8 测量的低活动时间，β=0.17，t（255）=2.9，p=.004，以及中等活动时间，β=0.14，t（255）=2.4，p=.017，与参与者的身体功能有关。中等身体活动的参与与出院时恢复到基线功能有关（Wald χ2=4.10，df=1，p=.043）。该研究初步支持 MW8 在住院痴呆症患者中的可行性和有效性。
