Kineziologija, Vol. 30 No. 2, 1998.
Izvorni znanstveni članak
Assessing the active drag in swimming using the kinematic and dynamic parameters
Otmar Kugovnik
; Faculty of Sport, University of Ljubljana, Slovenia
Jakov Bednarik
; Faculty of Sport, University of Ljubljana, Slovenia
Boro Štrumbelj
; Faculty of Sport, University of Ljubljana, Slovenia
Venceslav Kapus
; Faculty of Sport, University of Ljubljana, Slovenia
Sažetak
In front crawl swimming at maximum exertion and in swimming at maximum exertion with different forms of artificially created additional resistance, certain kinematic and dynamic parameters can be measured and the active drag, assuming that there is an equal power output in all cases can be estimated. Seventeen highly trained male swimmers, all over 16 years of age and specialized in front crawl swimming participated in this study. The pretraining mean (SE), of the height and the body mass of the subjects were 180.6+4.7 cm, and 74.3, +7 kg.
The mean active drag at maximal swimming velocities ranged from 64.94 N to 76.37 N in front crawl swimming. It was found out that the forces of the active drag, calculated from the measured kinematic and dynamic parameters in front crawl sprints at maximum exertion and front crawl swimming at maximum exertion with different forms of artificially created additional resistance, were not significantly statistically different. It was concluded that the forces which objectively measure the active drag could be calculated on the basis of the variables defined in the research by using the formula
R = Fu · (v2 · v12 ) / v13 – v23
Ključne riječi
swimming, active drag, additional resistance
Hrčak ID:
256621
URI
Datum izdavanja:
27.4.1998.
Posjeta: 812 *