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Rexhepi A.M.,Institute of Sports Anthropology | Brestovci B.,Institute of Sports Anthropology
Human Movement | Year: 2016

Purpose. Since human voice characteristics are specific to each individual, numerous anthropological studies have been oriented to find significant relationships between voice and morpho-functional features. The goal of this study was to identify the correlation between seven morpho-functional variables and six voice acoustic parameters in sportsmen. Methods. Following the protocols of the International Biological Program, seven morpho-functional variables and six voice acoustic parameters have been measured in 88 male professional athletes from Kosovo, aged 17-35 years, during the period of April-October 2013. The statistical analysis was accomplished through the SPSS program, version 20. The obtained data were analysed through descriptive parameters and with Spearman's method of correlation analysis. Results. Spearman's method of correlation showed significant negative correlations (R =-0.215 to-0.613; p = 0.05) between three voice acoustic variables of the fundamental frequency of the voice sample (Mean, Minimum, and Maximum Pitch) and six morpho-functional measures (Body Height, Body Weight, Margaria-Kalamen Power Test, Sargent Jump Test, Pull-up Test, and VO2max.abs). Conclusions. The significant correlations imply that the people with higher stature have longer vocal cords and a lower voice. These results encourage investigations on predicting sportsmen's functional abilities on the basis of their voice acoustic parameters. © Human Movement 2017.


Rexhepi A.M.,Institute of Sports Anthropology | Rexhepi A.M.,Sport Center for Increasing of Morpho Functional Abilities | Rexhepi A.M.,University College for Sport Education University | Brestovci B.,Institute of Sports Anthropology | Brestovci B.,University of Zagreb
Human Movement | Year: 2012

Purpose. The aim of this study was to derive the regression equation for predicting VO2max of athletes by the relatively new submaximal 3'Bike Test. Methods. This test was conducted on 1501 active football male players, aged 16÷35 years. A medical anamnesis was administered and then the athletes' weight was measured. Afterwards, the athletes performed the 3'Bike Test followed by the Astrand Bike Test for comparison reasons. Results. Linear regression of the data indicated that the produced regression model, as a whole, is statistically significant. In addition, the system of predictive variables was able to explain for 48% of total variability of the criterion variable VO2maxAST. According to the regression coefficients that had been derived, a regression equation that could predict VO2max was created. A significant high correlation (r = 0.688) and a non-significant paired t-test (p = 0.782) found between the measured VO2max (Astrand test) and the predicted VO2max (3'Bike Test) indicates a large similarity between the predicted and measured VO2max values. Conclusions. The 3'Bike Test was found to be a capable measurement tool of aerobic endurance, more reliable and valid than the Astrand submaximal test, as well as being shorter, more easily executed and a better predictor of VO2max.


Rexhepi A.M.,Sport Center for Increasing of Morpho functional Abilities | Rexhepi A.M.,University of Prishtina | Rexhepi A.M.,Institute of Sports Anthropology | Brestovci B.,Institute of Sports Anthropology | And 2 more authors.
International Journal of Biometrics | Year: 2013

The aim of this study was to research the relationships between set of body variables and set of cephalofacial variables, using statistical method of canonical analysis. The measurements were done on 288 adult male entities, aged 18-35 years old. Correlation analysis indicates mediocre inter-correlation among two sets of variables. Canonical analysis has enabled the extraction of two significant canonical roots for each set of variables. While left canonical roots explain 48.9% of total variance computed for the set of body variables, the right canonical roots explain 52.8% of the set of cephalofacial variables. Reduction of the measured variables in a small number of canonical roots may facilitate the work of the physical anthropologists in studying and explaining the genetic development of the bones, cartilages and soft tissues of humans, as well as their morphological construction. Copyright © 2013 Inderscience Enterprises Ltd.


Rexhepi A.M.,Sport Center for Increasing of Morpho functional Abilities | Rexhepi A.M.,University of Prishtina | Rexhepi A.M.,Institute of Sports Anthropology | Brestovci B.,University of Zagreb
International Journal of Biometrics | Year: 2013

The purpose of this study was to study the latent structure of the cephalofacial variables and to explain the clustering of these measurements. Eleven cephalofacial measurements were done on 561 male entities aged 18-35 years. The collected data are analysed through descriptive parameters, correlation analysis, and factorial analyses. Correlation analysis confirms three sets of variables that realise the higher correlations with each other. According to the principal component analysis of the factor analysis three latent factors have been extracted that explain 53.3% of the total variance: the neurocranial volume factor; the transversal factor of the face; and the longitudinal factor of the face. The reduction of multiple measured manifest variables in a small number of latent factors may facilitate the work of anthropologists in studying and explaining of the genetic basis of development of bones, cartilages and soft tissues of the head and their morphological construction. Copyright © 2013 Inderscience Enterprises Ltd.


Rexhepi A.M.,Institute of Sports Anthropology | Rexhepi A.M.,University College University | Rexhepi A.M.,Sport Center for increasing of morpho functional abilities | Brestovci B.,Institute of Sports Anthropology | Brestovci B.,University of Zagreb
International Journal of Morphology | Year: 2013

The human craniofacial bones are certainly the most important part of the body, as well as the foundation for the soft tissues of the face and head. This part of the body is extremely complex structure, which has a number of important functions, such are: diet, special senses, protection, communication. The main purpose of this research was to study and explain the latent structure of the cephalofacial measurements of female subjects. On 193 female subjects aged 18-35 years, we measured 11 cephalofacial measurements. The collected data are analyzed through descriptive parameters, Correlation analysis, and Factorial analyses. According to the results of the basic parameters the measured subjects are characterized with long, large and medium height head. Correlation analysis confirms some sets of variables that realize the higher correlations with each other. According to the principal component analysis of the Factor Analysis, with the rotation method direct oblimin, and using the Keiser criterion have been extracted four latent factors that explain 66.39 % of the total variance: The cranial factor; The factor of intracranial capacity; The transversal factor of the face; The longitudinal factor of the face. The composition of the extracted factors is compatible with the anthropological explanation of the anthropologists regarding the development of these tissues of the head.

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