21
USING THE MEASUREMENT HARDWARE
ECG measurement
An ECG recording is used to assess the athlete’s cardiac and metabolic state.
The sensor should be attached to the ECG chest strap and must be placed at the bottom of the
sternum. Soak the ECG chest strap electrode pads with water. The micro-USB port on the sensor needs
to be facing down; if you attach the sensor upside-down, your ECG will appear inverted and will cause
inaccurate assessment results.
The electrode pads on the inside of the chest strap must be aligned with the midaxillary line of the
body (position V6, shown as a red dot in the picture below). The chest strap should be tight around the
chest and it should not move out of position during normal breathing.
Female athletes should place the chest strap directly below or under a sports bra support band. When
possible, remove undergarments to ensure optimal placement of the chest strap.
DC Potential measurement
A DC Potential of the Brain recording is used to assess the state of the athlete’s CNS.
One single-use, pre-gelled electrode should be used to connect the sensor to the athlete’s forehead via
the DC Potential cable (please see the next page for illustrations). The other electrode should be
attached to the palm of the athlete’s dominant hand at the base of the thumb, and also connected to
the sensor via the DC Potential cable.
Each measurement requires a new set of gelled electrodes
;
using old or standard ECG electrodes will result in inaccurate assessment results.
NOTE
Keep unused electrodes in their original pouch.
Always seal an opened pouch by tightly folding the top of the pouch to prevent the electrodes from
drying.
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