Kinesiology, Vol. 28 No. 1, 1996.
Original scientific paper
Clustering of some movement structures in aerobics
Meta Zagorc
; Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
Abstract
Aerobics has not yet been studied in terms of classifying and systemizing the elements and structures of movements. This study is an attempt to classify 154 movement structures (units), performed standing up and without any accessories, into groups. The basis of classification is the employment of cardiovascular system, appropriate motor abilities and workload of muscles and joints. To define unit characteristics, we selected 33 variables, which were then graded from I to 5 by five experts. The reliability of the evaluation was appropriately tested, the marks were excluded using the factor analysis by the PAF method and by applying the Guttman-Kaiser criterion. By using a hierarchical method of clustering (Ward, 1963), the movement structures were then divided into six fairly homogenous groups. The differences between the groups were established through discriminant analysis. Research indicates that the movement structures vary with regard to the involvement of functional capacities of the cardio-vascular system and certain motor abilities, and above all with regard to topological workload of muscles and joints (in lower and upper extremities and trunk).
Keywords
aerobics, motor abilities, evaluation, clustering, discriminant analysis, training
Hrčak ID:
255668
URI
Publication date:
12.4.1996.
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