The aim of this research was to determine the effect of two different metric protocols, the
present standard and a new protocol with a video demonstration of the task, on reliability and
homogeneity of motor skills assessment tests for the students in primary education. The
sample of participants comprised ofstudentsin the third and fourth grades from four
elementary schools in the urban area of Petrinja and Sisak in Croatia. The total number of
students that participated was 327, consisting of 186 boys and 141 girls aged 10.5 years. The
students were divided in two subsamples, based on the protocol applied. The sample of
variables consisted of 4 motor skills assessment tests: Shuttle-run, Partial Curl-up, 90° Pushups, Back-saver sit and reach.The results of metric characteristics of composite testing in the
field of motor skills have shown a high level of reliability, homogeneity and sensitivity of
tests after both protocols were applied. Based on the reliability coefficient, the test called
90°Push-ups can be used further by using the video demonstration protocol, with a few trials
before the application, while the test called Partial Curl-updoes not allow the use and
application of the test in this form and using this method. The research shows that, with
correction of some tests, the new protocol with the video demonstration has better results of
metric characteristics of tests compared to the standard protocol.

Demonstration is a widely used method in sports teaching and coaching, as well in Physical
education classes. The most commonly used types of demonstration live demonstration and
video demonstration. However, a direct comparison between these two types of model has
rarely been undertaken in a motor context. Therefore, the aim of this reseasrch is to specify
and compare the effects of the two different metric protocol, former standard and the new
video demonstration, on the estimation of the test results in the primary school.The
participants involved the third and the fourth year students from four elementary schools in
Petrinje and Sisak which territorialy belong to urban area of the Sisak- Moslavic county. The
total number of students on whom this research has taken place was 327, of which 186 were
boys and 141 were girls at the age of 10,5. The students were divided into two subsamples
considering the used treatment,both standard and video demonstration protocol. The sample
of variables in this research consists of four tests for evauating motor abilities: Shuttle run,
Back-save sit and reach for the right and left leg, Push-ups and Curl up. The use of video
demonstration protocol for task performance has shown a significant effect in the tests
Shuttle run and Curl up, while significant effects were not gained in both both flexibility tests
(Back-save sit and reach for the right and left leg) and strength tests (push-ups) due to the
protocol. The results indicated that video demonstration seems more effective than the live
one for the early acquisition of a completely new motor skills.