期刊名称：Facta Universitatis : Series Physical Education and Sport
印刷版ISSN：1451-740X
出版年度：2016
卷号：14
期号：2
页码：257-267
语种：English
出版社：University of Niš
摘要：With the aim of studying the factor validity of the newly-constructed tests for the evaluation of jumping frequency, an experimental study was carried out on a sample of 25 volleyball players aged 20.20+3.16. To evaluate jumping frequency, four tests of single leg jump tests were applied (jumping on the left and right leg back and forth, lateral left and right leg jumps) and three double leg jump tests (double leg quick lateral bounds, lateral bounds and scissor jumps), as well as two tests for the evaluation of movement frequency, whose factor validity was already established (hand tapping and foot tapping). The results obtained from the participants in these tests had normal distribution and had satisfactory sensitivity. Using an Item analysis, a satisfactory reliability of all the applied tests of single and double leg jumps for the assessment of jumping frequency in the range of 0.92 to 0.81 was determined, and the conclusion drawn that the greatest coefficient of reliability (Cronbach alpha) was found for the Left leg jumps back and forth test, and the smallest for Double leg quick lateral bounds test. Using a factor analysis (the principal component method), the factor validity of the tests was determined, with coefficients ranging from -0,55 to -0,90, where the greatest projection on the first principal component originates from the left leg jumps back and forth, and the smallest from the double leg jumps to the side. On the basis of the results, we can conclude that all the tests of single and double leg jumps have satisfactory factor validity in the space of simple movement frequency for this sample of participants, and that they actually do measure jumping frequency.
