True Fitness CS8 Owner's Manual page 81

Appendix A
Remember to check with your physician before beginning any
Check
exercise program. She can help determine an appropriate target
with Your
heart rate. Medications often affect heart rate.
Physician
A New Robert Robergs, editor of the prestigious Journal of Exercise
Physiology, conducted a study in 2002 of the maximal heart rate
HRmax
equation 220 - age. He found this equation "has no scientific
Equation
merit for use in exercise physiology and related fields. "
In his survey of research in this area, Robergs found several other
simple equations that were significantly more accurate. The best
equation he found was derived in 1994 by Oten Inbar:
205.8 - (0.685 * age)
The CS 8.0 console uses the Inbar equation. Even though this is
the best available equation, it still has a possible range of error of
+/- 6 beats per minute.
Other similar equations that are also more accurate than 220 - age
are:
206.3 - (0.711 * age) (Londeree, 1982)
206.0 - (0.700 * age) (Tanaka, 2001)
208.8 - (0.734 * age) (Robergs meta study, 2002)
Roberg's paper can be found here:
<http://www.asep.org/Documents/Robergs2.pdf>
CS 8.0 Owner's Guide 91