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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/25677

Title: Biomechanical Analyses of Road Cycling
Authors: van Zwieten, K. J.
Schmidt, Klaus P.
Zubova, Irina A.
Piskun, O.E.
Varzin, S.A.
Issue Date: 2016
Publisher: Saint Petersburg State University, Peter the Great Saint Petersburg Polytechnic University
Citation: Варзин, C.A.; Громова, B.B.; Пискун, O.E.; Савченко, У.; Семенова, T.B.; Тарасовская, O.Ю.; Чурилов, Л.П. (Ed.). ANNUAL ALL–RUSSIAN RESEARCH AND PRACTICAL CONFERENCE WITH INTERNATIONAL PARTICIPATION "HEALTH – THE BASE OF HUMAN POTENTIAL: PROBLEMS AND WAYS TO SOLVE THEM", Proceedings of the Conference, Volume 11, part 1, Saint Petersburg State University, Peter the Great Saint Petersburg Polytechnic University,p. 403-405 (Art N° IV - 15)
Series/Report: XI ANNUAL ALL–RUSSIAN RESEARCH AND PRACTICAL CONFERENCE WITH INTERNATIONAL PARTICIPATION "HEALTH – THE BASE OF HUMAN POTENTIAL: PROBLEMS AND WAYS TO SOLVE THEM"
Series/Report no.: 11, 1
Abstract: A practical and realistic biomechanical analysis reveals various important features of road cycling, starting from the following. For a racing bike traveling fast, about 80 percent of the work the cyclist does will go in overcoming air resistance. Therefore, road cyclists do prefer to use a so-called aerodynamic position. Their “aero position” inevitably implies an anterior tilt of 15°-20° of their pelvis. In the optimal aerodynamic position, 20° anterior pelvic tilt results in 7,5 % increase of the lengths of hamstrings biceps femoris (long head) and semimembranosus, and 6 % decrease of the length of quadriceps muscle part rectus femoris. The observed increases and decreases of lengths of these muscles in aero position may lead to respectively hamstrings passive insufficiency, and rectus femoris muscle active insufficiency, as these muscles are now likely to shift away from their plateau region of optimal force (= 100 %). Such imminent muscle insufficiencies are reflected in “thigh injuries” “quadriceps and hamstring strains”, as described in cyclists. Using a “gravity seat” (J. Mackenroth, 2013) possibly neutralizes some anterior pelvic tilt. To restore optimal muscle force however, Electro Vibro Stimulation (EVS) is strongly recommended.
Notes: The authors thank Peter Gijsel, Nikolaas Van Riet, Ellen van den Goor, Tim De Jonghe, Riekje van Osnabrugge, Jan Krol, Jana De Brandt, and Bart Billiet for their stimulating interest during the preparation of this paper.
URI: http://hdl.handle.net/1942/25677
Link to publication: https://humanpotential.spbstu.ru/course/view.php?id=24#section-5
ISSN: 2076-4618
Category: C1
Type: Proceedings Paper
Appears in Collections: Research publications

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