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Fizička kultura
2010, vol. 64, iss. 1, pp. 46-61
article language: Serbian, English
document type: Original Scientific Paper

Sexual dimorphism in different indicators for evaluating isometric leg extensors explosive force
aRepublički zavod za sport, Beograd
bUniversity of Belgrade, Faculty of Sports and Physical Education
cUniveristy of Niš, Faculty of Sport and Physical Education

e-mail: jelena.ivanovic@rzsport.gov.rs

Abstract

The aim of this paper is to define differences in various indicators for evaluating isometric leg extensors explosive force (RFDLEGEXTISO) regarding the gender. 71 examinees divided into 2 groups regarding the gender, male N=39, female N=32, was examined. In order to assess explosive isometric leg extensors force, the standardized equipment was used, tensiometric probe and standardized test in sitting position. Higher values were measured in male examinees in almost all the observed indicators for evaluating isometric leg extensors explosive force at the level of Wilks Lambda 0.475, F=5.925, p=0.000. Statistically significant differences were established in the following variables: in RFDBASICLEGEXTISO F=29.788, p=0.000; in RFD50%LEGEXTISO F=6.674, p=0.012; in IndexSNGBASIC F=12.731, p=0.001; in RFD30%LEGEXTISO F=7.750, p=0.007; in RFD50-100%LEGEXTISO F=26.558, p=0.000; in RFDallomLEGEXTISO50% F=3.370, p=0.000; in RFDallomLEGEXTISO30% F=4.545, p=0.037; in RFDallomLEGEXTISO F=25.421, p=0.000; and in Coeff S/A gradient F=4.592, p=0.036. The distribution of the results and the values for the coefficient of variation among the observed variables in the male examinees were normal, reliable and homogeneous, in the subsample female results showed declination in distribution, therefore the new indicators can be used in analytics and diagnostic and the obtained results can be used as a criterion for testing, evaluating explosive isometric leg extensors force in different gender population or for evaluating sexual and contractile dimorphism. Apart from variable Coeff S/A gradient, the results of all examined absolute and relative indicators showed higher values in male examinees. The highest differences were measured in RFD50-100%LEGEXTISO (170.63%) and the lowest in IndexSNGSPEC (11.21%).

Keywords

F-t curve characteristics; leg extensors; students; athletes; gender differences

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