Wfi Program - Stairmaster StepMill SM916 Owner's Manual

WFI Test Program
The WFI test assesses the re ghter's aerobic capacity expressed as VO
The results are calculated and recorded in milliliters (ml) of oxygen per kilogram
(kg) of body weight per minute (VO2 max).
These aerobic assessments are submaximal and are based on the heart rate
response during graded exercise. Accurate estimation of maximal heart rate
(MHR) is critical to the submaximal prediction used in these assessments. A new
formula for calculating maximal heart rate is utilized with these protocols, it more
accurately accounts for age-related reduction of MHR. Be aware that the heart
rate can be a ected by variables such as body temperature, hydration state,
anxiety, stress and medications. In addition to heart rate, body mass (height-
to-weight ratio), is also a signi cant variable in both prediction equations. The
relationship between height and weight is recorded as Body Mass Index (BMI). It is
important to note that BMI is not being used in these aerobic protocols to estimate
body composition; but rather, is used to represent the mass of each participant.
The test starts at 46 steps/min for 2 minutes, then 53 steps/min for 1 minute (warm-
up period). The test time includes the warm-up time. The test is a series of 1-minute
intervals with increasing work loads on each subsequent minute.
Note: Once the test starts, the user should not maintain a hold or lean on the
handrails; this will result in overestimation of aerobic capacity.
The test is complete when the heart rate exceeds the Target Heart Rate (THR) for
15 seconds. The total Test Time (TT) begins from the time the user starts on the
Stepmill, to the point at which the user exceeds their THR. It does not include the
nal 15 second quali cation period that the heart rate was above the THR.
The quali cation period is to verify the user's heart rate does not exceeds the
target, and then drop down to the THR or below for 15 seconds, if it does, then the
test continues.
Target HR = [208 - (0.7* Age)] * 0.85
BMI (in - lbs) = 703* Weight (lbs) / Height (inches)
BMI (cm - kg) = Weight (Kg) / Height (cm/100)
VO max = 57.774 + (1.757 x time) - (0.904 x BMI)
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Once the test is completed, the user should cool down for a minimum of 2 minutes
at 39 steps/min.
Operation
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Owner's Manual
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