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Interval workouts are popular because they are superior training for
sports activities, which almost always involve highly varying exer
-
cise intensities. Interval workouts are not optimal for weight loss or
weight control, since steady-state exercise is most efficient for maxi
-
mal total energy expended for a given effort.
METs: unit of energy expenditure used for exercise prescriptions,
defined as the current energy expenditure rate divided by the basal
metabolic rate (BMR). In the case of METs, BMR is defined as a
VO2 of 3.5, meaning it varies directly with body weight. This is
incorrect, as BMR varies with the
2
/
3
-root of body weight. See T-
MET.
oxygen uptake: also referred to as VO
2
, the rate of consumption of
oxygen, usually expressed as a rate per unit of body weight, or mil
-
liliters per kilogram per minute, or ml/kg/min, or ml/kg*min
-1
. This
is the best way to accurately measure energy expenditure during
aerobic exercise.
RJ-45: an 8-conductor locking connector used for the CSAFE sys-
tem, also commonly used for Ethernet cables (where only four wires
are used). The RJ-45 is typically wired using the EIA/TIA-568 twist
-
ed-pair wiring standard.
rpm: revolutions per minute, the most common unit of measure
of angular motion in the non-scientific world. The International
System (SI) unit that is more useful is radians per second, which is
equal to 0.1047 rpm.
segment, work and rest: same as work and rest interval. See interval
training.
speed, estimated running: applies the measured energy expenditure
to walking and running equations, producing a more friendly or
familiar speed feedback.
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
appendIx e - glossarY
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