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When
the ActiTrac data is downloaded to the PC, the
activity data is written to the PC screen in a 2
window bar-graph format. The top window will show
the data set in its entirety including dates and
data values and the bottom window shows a close-up
zoom of a data segment highlighted in the top
window. Note, since the both the top and the bottom
window graphs can only display a limited number of
data points, the data will be shown as composite
data values representing groups of data points
whenever the data exceeds 180 points.
Included in the top graph is the total amount of
time (in days and hours) of the recording session,
the number of data points (epochs) per hour and the
average value of all of the data displayed in this
window.
For a more detailed view of specific time of day and
activity, the bottom window provides a zoomed-in
display of the data within a selected segment of the
top window. Also provided in the lower window is the
sum of the data, the average of the data and the
number of data points.
The screen also contains arrow flags indicating the
number of times the marker button was pressed during
an epoch. Other information stored in the ActiTrac
includes the name of the patient, the monitor tag,
the file tag, the serial number of the unit and the
selected 1 of 7 gain (sensitivity) setting. Also,
the ActiTrac's activity levels (bar-graph form
ranging from 0 to 250) represents values of motion
acceleration per unit time. For those who want
calibrated data in scaled absolute units, the data
can also be displayed in average milli-g units which
range from 0.312 to 20.0 mg. This format also has 7
selectable sensitivity settings.
The ActiTrac system is incredibly reliable and easy
to use. You can even download the monitor without
taking the unit off your wrist. Additionally, in the
middle of your experiment, you can download data for
observation and return to normal recording operation
with interruption of your data string. Most other
activity monitors do not provide for this
convenience. Note, many customers have commented
that this data check/resume feature set us apart
from the rest. Most other monitoring systems require
a restart operation thus forcing the creation of a
new file.
The new ActiTrac monitor represents an outstanding
value not commonly found in today's marketplace.
It's an especially attractive full featured,
low-cost monitor for physical activity and is
ideally suited for use in both the laboratory and
the home environments.
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