31
8 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be used to tell Powertimer the sprint is no longer valid.
TESTS
8