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Pregled bibliografske jedinice broj: 424662

Poglavlje/Rad u knjizi

Autori: Babić, Vesna; Harasin, Dražen; Dizdar, Dražan
Naslov: Relations of the variables of power and morphological characteristics to the kinematic indicators of maximal running speed
Knjiga: Biomechanical diagnostic methods in athletic training
Urednik/ci: Čoh, Milan
Izdavač: University of Ljubljana, Faculty of Sport, Institute of Kinesiology
Grad: Ljubljana
Godina: 2008
Raspon stranica:: 159-172
Ukupni broj stranica u knjizi:: 261
ISBN: 978-9616583-61-9
Ključne riječi: canonical analysis, morphological characteristics, power, kinematics, stride length, stride frequency, sprinting, PE students
Sažetak:
The aim of the present research was to investigate the relations of 7 variables of power and 12 variables of morphological characteristics with the kinematic indicators (stride frequency, stride length, foot-ground contact duration, flight duration) of maximal speed running. The research was conducted on a sample of 133 physical education male students, 19 to 24 years (age 21.7 ± ; ; 1.08 ; body height 180.8 ± ; ; 6.98 ; body weight 76.6 ± ; ; 7.62), freshmen at the Faculty of Kinesiology University of Zagreb. By means of the component model of factor analysis under the GK-criterion and non-orthogonal rotation under the promax criterion the following factors were obtained: three morphological factors (skeleton dimensionality, in which the longitudinal component prevailed, body voluminosity and subcutaneous fatty tissue) and two factors of power (power of jumping type and ballistic power). Canonical analysis of the morphological factors and power factors with kinematic parameters resulted in two pairs of canonical factors with statistically significant canonical correlations (Rc1=0.76 ; p<0.01, and Rc2=0.57 ; p<0.01). On the basis of the first pair structure of canonical factors it was concluded that the Faculty of Kinesiology students who had pronounced dimensionality of skeleton, a smaller amount of subcutaneous fatty tissue and better developed relative power, performed longer strides in maximal speed running. The structure of the second canonical factor pair indicated that the students with the greater skeleton dimensionality had a smaller frequency of strides and their foot-ground contact lasted longer. It was also determined that stride length and stride frequency were negatively correlated in maximal speed running which was the result of positive correlation between skeleton dimensionality and stride length, on the one hand, and of negative correlation between skeleton dimensionality and stride frequency. The findings may contribute to a better understanding of the factors responsible for sprint performance in the population of athletes who are not top-level sprinters, i.e. they may be useful to PE teachers, coaches who work with novices in athletics and physical conditioning coaches who work in other sports than athletics, to get a more thorough insight into the sprinting efficiency mechanisms.
Projekt / tema: 034-0342607-2616, 034-0342607-2279
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
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Upisao u CROSBI: vbabic@kif.hr (vbabic@kif.hr), 14. Kol. 2009. u 07:43 sati



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