The Spirit Commercial CT850ENT elliptical machine is a top-of-the-line fitness equipment designed for commercial use. To fully understand and maximize its features, make sure to download the free Owner's Manual from manualshive.com. This comprehensive manual will guide you on how to use and maintain your machine effectively.
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Spirit Fitness
GERKIN
The
Gerkin
protocol, also known as the fireman’s protocol, is a sub-max VO2 (volume of oxygen) test. The
test will increase speed and elevation alternately until you reach 85% of your Max heart rate. The time it
takes for you to reach 85% determines the test score (VO2max) as shown in the chart below.
