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History of Materials for Production of Cross-country skis
Ptáček, Ondřej ; Němec, Karel (referee) ; Molliková, Eva (advisor)
The present bachelor thesis is of a retrieval type. The first part deals with the development of cross-country skiing and the development of materials and technologies used in the production of cross-country skis from the mid-20th century to the present. It also explains important concepts in terms of design, shape and types of cross-country skis. Additionally, materials for cross-country ski poles are outlined and their differences are discussed. The second part refers to some of the materials used in the manufacture of cross-country skis, or cross-country ski poles. The emphasis is mainly laid on composite materials and matrices. The matrix in composites is reinforced using fibre or other type of filler.
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The difference in load of the body between the rides on roller skis and cross-country skis.
Franc, Jan ; Gnad, Tomáš (advisor) ; Jindra, Matouš (referee)
Title: The difference in load of the body between the rides on roller skis and cross-country skis. Objectives: The aim of work is to determine the difference in load of the body between the rides on roller skis and ride on cross-country skis in skating and classic techniques. Methods: The work is conceived as a case study. It is a quantitative research carried out on the basis of comparing the values of heart rate and blood lactate concentration at one participant. The values were compared between the roller and cross-country skis when skating as well as classical techniques. Results: By the heart rate measuring and lactate concentration, the difference was detected between the roller and cross-country skis. We came to the result that the roller skis place less demands on the load of the body than cross- country skis which runners use to ski in winter. Keywords: cross-country skiing, cross-country skis, roller skis, lactate, heart rate
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History of Materials for Production of Cross-country skis
Ptáček, Ondřej ; Němec, Karel (referee) ; Molliková, Eva (advisor)
The present bachelor thesis is of a retrieval type. The first part deals with the development of cross-country skiing and the development of materials and technologies used in the production of cross-country skis from the mid-20th century to the present. It also explains important concepts in terms of design, shape and types of cross-country skis. Additionally, materials for cross-country ski poles are outlined and their differences are discussed. The second part refers to some of the materials used in the manufacture of cross-country skis, or cross-country ski poles. The emphasis is mainly laid on composite materials and matrices. The matrix in composites is reinforced using fibre or other type of filler.
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