Table 1.
Description of UE Tasks.
Figure 1.
Example of data processing for one participant and one task, Grooming.
A. Vector magnitude (measured in activity counts) for the dominant and nondominant UEs. B. Vector magnitudes were smoothed using a 5-sample moving average, resulting in decreased amplitudes. C. The Bilateral Magnitude (measured in activity counts) was calculated for each second of activity. D. The Magnitude Ratio was calculated for each second of activity. E & F. Histograms of Bilateral Magnitude and Magnitude Ratio values, respectively. The median values are identified by arrows.
Figure 2.
Example data for a single participant.
A. Scatterplot illustrating the relationship between the Magnitude Ratio and Bilateral Magnitude (measured in activity counts) for each second of data (filled circles) for one task, Grooming. The median value of both variables is indicated by the red ‘X.’ B. Scatterplot illustrating how the different tasks compare to Grooming with respect to median Bilateral Magnitude and median Magnitude Ratio values. The median Magnitude Ratio for Bilateral Sorting and Bilateral Typing deviated from 0, despite these being bilateral tasks. For Bilateral Sorting, the participant used her nondominant UE to complete half of the task before using both UEs together. For Bilateral Typing, the participant frequently used her dominant UE to press the “Backspace” key, even though she used both UEs to type in a hunt-and-peck fashion.
Table 2.
Median and Interquartile Range of Median Bilateral Magnitudes and Median Magnitude Ratios for Each Task.
Figure 3.
Values are the middle 50% (25–75 percentiles) of median Bilateral Magnitude (vertical bars, measured in activity counts) and median Magnitude Ratio (horizontal bars) values. Differences between tasks and variability within tasks are evident.
Table 3.
Values for Estimated Energy Expenditure and Time Spent in Simultaneous Activity for Each Task.