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  • Differences between the elite and sub-elite sprinters in kinematic and dynamic determinations of countermovement jump and drop jump
    Čoh, Milan ; Maćkała, Krzysztof
    The aim of this study was to examine the relationship between selected variables of lower extremities explosive power measured via countermovement jump, (CMJ) and drop jump, (DJ) and sprinting ... ability over 60 and 100 m dash. Twelve national level Slovenian sprinters were assigned to two groups: in elite (n=6) and sub-elite (n=6) The grouping criterion was performance in 60 mand 100 m in official competition. Biomechanical parameters of both jumps were measured with the use of bipedal force platform and a system of 9 infraspectral CCD cameras with a 200 Hz frequency. Differences between the groups of sprinters were examined with the use of repeated measures ANOVA variance analysis. In countermovement jump, the differences (p<0.05) between the groups were revealed in: take-off velocity (elites = 3.23 m.s -1 , sub-elites = 2.94 m.s -1), height of the jump, vertical velocity of body centre of gravity (BCG) and the impulse of force in the concentric phase of the jump (concentric impulse: elites = 123.91 Ns; sub-elites = 108.06 Ns). In the drop jump, elite and sub-elite sprinters differentiated in the realisation of movement velocity in the eccentric and concentric phases (take-off velocity : elites = 3.18 m.s -1, sub-elites = 2.87 m.s -1, eccentric velocity: elites = 3.05 m.s -1; sub-elites = 2.81 m.s -1. This investigation provides evidence that vertical and drop jumps are very important tools to meet the demands of sprint training according eccentric-concentric muscular work. The drop jump (DJ) showed better quality than countermovement jump (CMJ) in the neuromuscular specificity.
    Vir: Journal of strength and conditioning research. - ISSN 1533-4287 (Vol. 27, issue 11, nov. 2013, str. 3021-3027)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 4354737
    DOI

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