True Fitness Z9, Z8 manual Appendix C - METs Explanation and Formulas

		Appendix C - METs Explanation and Formulas
	METs	As stated earlier, the MET is a unit of exercise measurement that
Explanation		takes into account body weight. Since energy expenditure in a
	and	weight-bearing exercise such as running, walking, or stairclimbing is
Formulas		directly proportional to body weight, the formulas to calculate METs
		are a bit simpler than for, say, an exercise bike. For example, 7 mph
		running is always 11.7 METs, no matter who you are.
		A MET is defined as 3.5 ml/min/kg of oxygen usage by the body,
		where:
		ml is milliliters, the actual measured volume of gaseous oxygen
		min is minutes
		kg is bodyweight in kilograms
		This energy consumption rate corresponds to about 72 calories per
		hour for a 150-pound person, which approximates the average basal
		metabolic rate of the general population.
		The best formulas for treadmill energy expenditure also use oxygen
		usage by the body, or VO2. The two formulas are:
		walking VO2 = (2.68 * speed) + (0.48 * speed * incline) + 3.5
		running VO2 = (5.36 * speed) + (0.24 * speed * incline) + 3.5
		To get METs, divide the result by 3.5.
		(Noted exercise physiologist David Costill's speed constants for
		walking and running are 3.06 and 4.86, respectively.)

Z 8 a n d Z 9 S e r i e s Tr e a d m i l l O w n e r ' s G u i d e

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