Static Jump; Static Jump With Extra Weights (Static Jump/Weight) - netest Powertimer SW-300 User Manual

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action. Also, the start event of the test (light cell / mat event)
can be changed when editing the Sprint Analysis's Test-Spe-
cific Parameters from Start Test – dialog (see chapter 3.2 for
more information about changing the Test-Specific Parameters)
Test sequence
The subject sprints through the first photocell and the Perform-
ing Test notification is shown. The subject runs to the jump mat
and makes two contacts on the mat. The first contact is used
as the contact time and the second contact is used to calculate
the flight time. The subject may make more than two contacts
if the mat is large, but only the first contact and flight times are
shown. After the subject has done the number of sprints speci-
fied as test parameter the test is considered complete.
If the starting event of the test is set to 'Start from the mat', the
test begins when subject makes the first contact on the mat.
Test results
The contact, flight and sprint times are measured and the ve-
locity is calculated from the sprint distance and sprint time. Ve-
locity is shown in meters per second (m/s).

8.16 Static Jump

Test description
The Static Jump (SJ) is used to test speed and explosive
strength performance. In the static jump the subject jumps as
high as possible on a jump mat starting his jump with a 90 de-
grees knee angle.
Test parameters
The test has only one parameter: The number of jumps to be
performed in one test action.
Test sequence
The subject starts each jump with a 90-degree knee angle and
performs the number of jumps specified in the test parameters.
If the subject leaves the jump mat before the test is complete,
the Powertimer SW-300 will show the Performing Test notifica-
tion, since it assumes that the subject is jumping. The notifica-
tion will go away if the Cancel button is pressed or the 1.5-
second jump timeout elapses.
Test results
Powertimer measures the jump time and calculates Jump
Height and Jump Power from that. The results of Static Jump
test are used in the Counter Movement Jump Elasticity and
Static Jump with Extra Weight Explosive Strength Index calcu-
lations.
8.17 Static Jump With Extra Weights (Static Jump/
Weight)
Test description
The Static Jump with Extra Weights (SJxW) is used to test and
measure explosive strength performance. The test is similar to
the Static Jump, but in this case the subject has extra weights
on him.
Test parameters
The SJxW has two parameters: The Number of Jumps to be
performed within one test action and the Extra Load for the
first jump. The Extra Load can be changed before each jump.
Test sequence
Sequence is similar to the Static Jump sequence. If you need to
change the Extra Load parameter, select the Change Weight
action from the action list of Test Performer view.
Test results
The Powertimer measures the jump times and calculates jump
height and power from that. Also the Explosive Strength Index
is calculated if the subject has performed the Static Jump test.
If you select the Load-Height Curve action, you'll see a graph
that shows the relation between the Extra Load and the Jump
Height.