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G-Flight User Manual
(Betas)
Page 2
The G-Flight is comprised of two
components
The component on the left of two
shown in the picture is the display
component. This component has
the “on/off switch”, the display
screen for jump metrics and a
sensor.
The component on the right of the
two shown in the picture simply
acts as a sensor. As you will see in
the upcoming slides, the sensors
are quite small and properly
alignment is key for best use
G-Flight
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Turning On
The on off switch is
located on the back
of the display piece
(figure 1).
When turned on,
the back will light
up green and flash
red several times
before the system
is ready to be used
(figure 2)
Figure 1 Figure 2
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Set up
Make sure sensors are lined up prior to jump
testing
Circled on the right is the sensor attached to
main piece where the display is placed. When
the sensors are properly lined up, simply
breaking the beam (tapping your hand, feet or
taking a small hop) will register and the metrics
will appear on the G-Flight display (as shown)
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Foot Placement
Line up your pinky
toes with the
sensors. You have
want to take a
small hop before
you take your first
jump. This will
make sure the
sensors are lined
up
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Landing
Landings need to be
consistent. If you land outside
of the sensors, the jump will
not register.
We have found that a couple
of practice jumps or adding a
visual landing marker can help
limit the error
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Metrics
The G-Flight will provide you
with four metrics
-ms
-cm
-GCT
-RSI
Each will be elaborated on i
the following pages
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Time in air
Time in air is measured in
milliseconds. This metric is
used to help calculate jump
height
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Jump Height
Jump height is measured in
centimeters. Jump height is
derived from the time in air
metric (ms).
It is most accurate when
landings are takeoffs are
consistent
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Ground Contact
Time
Ground contact time (GCT)
The length of time one’s feet
are on the ground preceding
the jump
Typically only useful for
continuous movements (i.e
depth jumps, hops, or
bounds)
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Reactive Strength
Index
Reactive strength index (RSI)
is derived from ground
contact time and jump height.
It is a composite score used
to measure the level of
“reactive strength”. It was
developed at the Australian
Institute of Sport and more
information can be easily
found on the web
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Best practices
The G-Flight is best used indoors (sun interference outside)
The G-Flight needs to be lined up properly (sensors facing each other)
The G-Flights metrics will be best if landings are takeoffs are controlled
The G-Flight does not save data
The G-Flight needs to be fully charged for best readings
The G-Flight’s sensors need to be free to obstruction
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