Spirit XT685ENT Owner's Manual page 42

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PROGRAMS
Fitness Tests
Choose from 7 options under the Fitness Tests tab. Tap on the
test card to open the test setup page. Please make sure that the
physical parameters displayed on this page are correct: this data
may affect the course of the test and its results; if the data is not
accurate, press "Edit Physical Data" to adjust the numbers.
Before the test:
Make sure you are in good health; check with your physician
before performing any exercise if you are over the age of 35 or
have any pre-existing health conditions.
Make sure you have warmed up and stretched before taking the
test.
Do not take in caffeine before the test.
Gerkin Protocol is a sub maximal VO2 (volume of oxygen) test, that
increases speed and incline alternately until you reach 85% of your
max heart rate (a heart rate monitor is required for this test). The
time it takes for you to reach 85% determines the test score (VO2
Max). The test starts with a 3-minute warm-up at a lower speed.
Air Force, Army, Navy, Coast Guard, PEB and Marine Corps are
US military tests that measure the time required for you to cover a
certain distance. The speed is controlled manually.
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