Clinical Study Measuring Activity Levels at an Acute Stroke Ward: Comparing Observations to a Device

License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Background. If a simple system of instrumented monitoring was possible early after stroke, therapists may be able to more readily gather information about activity andmonitor progress over time. Our aimwas to establish whether a device containing a dual-axis accelerometer provides similar information to behaviouralmapping on physical activity patterns early after stroke.Methods. Twenty participants with recent stroke ≤2 weeks and aged>18 were recruited andmonitored at an acute stroke ward.Themonitoring device (attached to the unaffected leg) and behavioural mapping (observation) were simultaneously applied from 8 a.m. to 5 p.m. Both methods recorded the time participants spent lying, sitting, and upright. Results. The median percentage and interquartile range (IQR) of time spent lying, sitting, and upright recorded by the device were 36 % (15–68), 51 % (28–72), and 2 % (1–5), respectively. Agreement between the methods was substantial: Intraclass Correlation Coefficient (95 % CI): lying 0.74 (0.46–0.89), sitting 0.68 (0.36–0.86), and upright 0.72 (0.43–0.88). Conclusion. Patients are inactive in an acute stroke setting. In acute stroke, estimates of time spent lying, sitting, and upright measured by a device are valid. 1