Tests - netest Powertimer SW-300 User Manual

8

8 TESTS

TESTS
This chapter explains the tests that can be performed with
Powertimer SW-300, their parameters and the results meas-
ured and calculated from them. Tests are shown here in the
order they are shown in the Test Manager view. The header
of the chapter shows the actual name of the test. If the actual
name and the name shown in Test Manager differ, the name
shown in Test Manager is in parenthesis.
Almost every test has one parameter that determines the
number of trials to be performed in one test action. A test ac-
tion can be quitted and stored into the databases even if all
trials have not been performed. However, a test action with no
trials is never stored.
The jump mat is quite sensitive to changes in the center of
gravity of the subject standing on the mat, so sometimes Pow-
ertimer SW-300 might start to measure a jump even if the sub-
ject does not actually jump. In that case you can either press
the Cancel button in the Test Performer view or wait the 1.5
second timeout after which Powertimer knows that the sub-
ject was not actually jumping. Powertimer also starts to meas-
ure a jump when the subject leaves the jump mat (for example
to climb on the platform in Drop Jump ). Also in that case the
Cancel button or timeout cancels the jump.
The jump tests have a timeout of one second after a jump is
finished. Within that timeout Powertimer does not measure
jumps. Without this filter the center of gravity changes that oc-
cur when the subject lands might make Powertimer assume
that a new jump has started. Obviously the tests that have re-
petitive jumps do not have this filter.
The repetitive jump and contact tests can usually be stopped
after few results and then continued later. However, this might
produce invalid test results, since the subject has some time to
rest. The Repetitive Jump Test is an exception to this, since it
also measures time spent performing the jumps. If the Repet-
itive Jump Test is cancelled, it cannot be continued anymore
and a new test action needs to be started.
All sprint tests except 20-m MFT do not have timers, so if the
subject stops in middle of a sprint, the Cancel button needs to
be used to tell Powertimer the sprint is no longer valid.