Reliability and factorial validity of basketball shooting accuracy tests
2011 (English)In: Sport Scientific And Practical Aspects, ISSN 1840-4413, E-ISSN 1840-4561, Vol. 8, no 1, p. 25-32Article in journal (Refereed) Published
Abstract [en]
The aim of the study was to determine reliability and factorial validity of six basketball shooting accuracy tests. Fifty five healthy basketball players (age 19.1 ± 3.1 years; body mass 83.4 ± 12.5 kg; height 189.1 ± 8.2 cm; body fat percentage 13.1 ± 4.1) from four Bosnian basketball teams participated in this research. The applied tests have been constructed in order to measure basketball shooting accuracy from three different distances and under different intensity loads. The standard statistical parameters were calculated for each trial of all six basketball shooting tests (arithmetic mean, standard deviation and range). The average intertrial correlation coefficients (AVR), interclass correlation coefficients (ICC) and Cronbach’s alpha reliability coefficients (α) were used to determine the between-subject reliability of basketball shooting tests. The within-subject variation for the tree tests was determined by calculating the coefficient of variation (CV). In order to determine the factorial validity of six basketball shooting tests, an intercorrelation matrix of the six tests was factorized using a principal component factor analysis. Structurally and physiologically more demanding tests performed from longer distances, produced higher variation in the applied tests. The most reliable tests are those that were performed from short distances in physiologically and structurally less demanding conditions. Results showed that all six tests have a similar measurement goal, that is to say basketball shooting accuracy, but they do not measure the same aspects of basketball shooting accuracy. As reliable and valid instruments, the tests can be used in future studies, but also can help coaches to evaluate players’ accuracy in more realistic conditions, or to use the tests as training drills for improving basketball accuracy and players’ fitness.
Abstract [bs]
Cilj rada je bio da se utvrdi pouzdanost i faktorska validnost šest testova za procjenu košarkaške preciznosti. Istraživanje je sprovedeno na pedeset pet zdravih košarkaša (uzrast 19.1 ± 3.1 godina; težina tijela 83.4 ± 12.5 kg; visina 189.1 ± 8.2 cm; postotak masnog tkiva 13.1 ± 4.1) iz četiri kluba koji su nastupali u prvoj i drugoj bosanskoj ligi. Primjenjenim testovi su konstruisani da mjere košarkašku preciznost šutiranja sa tri različe distance i pod različitim uslovima fiziološkog opterećenja. Za svaki od tri pokušaja izračunati su aritmetička sredina, standardna devijacija i raspon. S ciljem da se utvrdi pouzdanost testova izračunati su prosječna korelacija između pokušaja (AVR), koeficijent unutrašnje koinzistencije podataka (ICC) i Cronbach alpha koeficijent pouzdanosti (α). Varijabilnost testova među ispitanicima je određena koeficijentom varijacije (CV). S ciljem da se utvrdi faktorska validnost testova, matrica interkorelacija testova je faktorizirana koristeći komponentnu faktorsku analizu. Dobijeni rezultati govore da je najveća varijabilnost kod testova koji se izvode sa većih distanci, te koji su strukturalno i fiziološki zahtjevniji, i suprotno najpouzdanijim su se pokazali testovi koji su se izvodili sa manjih udaljenosti te koji su bili fiziološki i struturalno manje zahtjevni. Također, rezultati pokazuju da svih šest testova ima jednak cilj mjerenja, to jest košarkašku preciznost, ali da ne mjere svi isti aspekt preciznosti. Kao pouzdani i validni instrumenti, testovi se mogu koristiti u nekim budućim istraživanjima, ali mogu pomoći trenerima da procjenjuju preciznost igrača u takmičarski realnijim uslovima ili da ih koriste kao trenažne vježbe za poboljšanje preciznosti i fizičke pripremljenosti košarkaša.
Place, publisher, year, edition, pages
2011. Vol. 8, no 1, p. 25-32
Keywords [en]
fatigue protocol, field tests, basketball players
Keywords [bs]
protokol zamora, terenski testovi, košarkaši
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-28570OAI: oai:DiVA.org:miun-28570DiVA, id: diva2:954154
2016-08-202016-08-202025-02-11Bibliographically approved