LifeSpan SP-710 Owner's Manual page 24

Hand Pulse Technology
Lifespan Fitness Spin Bikes come equipped with hand pulse sensors which are used to pick up tiny EKG/ECG
signals that run through the body when your heart beats. These electrical EKG/ECG signals are very small and
that they must be amplified 1000 times to make the signal useful for the computer to display your pulse.
To ensure proper operation:
- The user must maintain good, consistent contact on all four sensors
- The users skin cannot be too dry or too wet
Other factors that could affect the reading:
- Change of grip on the sensors (during slow pace cycling and up to sprinting)
- Tightening of hand muscles will produce small electrical signals
- Static electricity charges from the air or from moving on the spin bike
EKG/ECG Sensors may filter through actual EKG/ECG signals and "Noise" factors that may affect the reading.
This will cause the pulse reading to be delayed and will take longer to update the display as the heart rate
changes. Too much noise will create an incorrect reading. Medical conditions or having no electrical signal in the
hands are other factors that may affect pulse readings as well.
These are limitations of hand pulse technology and even the most expensive systems (which can cost upwards
of $3,000) used in hospitals have the same problems. The difference is that a patient in a hospital is not pedaling
on a spin bike.
To test if your hand pulse sensors are working up to specification, hold them while stationary, not pedaling, and
see if the reading is more in line with what you would expect. This will eliminate the movement and static
electricity factors. If your hands are dry, then wet them slightly (saliva works as a great conductor if this doesn't
bother you).
For more information, please contact our Lifespan Technical Support Department
www.lifespanfitness.com.au
support@lifespanfitness.com.au
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SP-710