A case study to analyse swimming techniques in front crawl, backstroke, breaststroke and butterfly stroke using a novice inertial measuring method with accelerometers and gyroscopes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26630%2F18%3APU129508" target="_blank" >RIV/00216305:26630/18:PU129508 - isvavai.cz</a>

Result on the web

<a href="http://conference.fsps.muni.cz/media/3065171/proceedings-of-the-11th-conference-on-kinanthropology.pdf" target="_blank" >http://conference.fsps.muni.cz/media/3065171/proceedings-of-the-11th-conference-on-kinanthropology.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

A case study to analyse swimming techniques in front crawl, backstroke, breaststroke and butterfly stroke using a novice inertial measuring method with accelerometers and gyroscopes

Original language description

Top level swimming has seen a significant growth in performance over the past twenty years. The cause of this rise can be found not only in the great amount and intensity of swimming training, but also in science and research investigations in this sport. The aim of this paper is to present our new measurement method for inertial sensors and synchronous video recording used for the analysis of swimming techniques. Since 2009, we have been using two tachographs to measure swimming speed and to carry out its analysis. Results of tachograph measurements were published previously. In addition to tachographs, since the beginning of 2017, we have been using an inertial measurement unit to measure the acceleration of swimming. This unit contains sensors of inertial variables in the MicroElectroMechanical System (MEMS) technology. Specifically, it is a triaxial accelerometer and a triaxial gyroscope. Unit control and transmission of measured data are wireless via Wi-Fi interface. Motion of the swimmers being measured is graphically and numerically evaluated, along with synchronous recordings from three underwater camcorders. In the present article, we will focus only on measurements with the inertial measuring unit where we will introduce our new measuring method for the qualitative evaluation of front crawl, back stroke, breast stroke and butterfly technique of selected probands. For the measurement, probands swam their entire distance with an accelerometer mounted on a belt above their pelvic bone. When measuring with the accelerometer unit on 8 March, 26 April, 31 May, 18 September 2017, the national team of OLYMP Sport Centre of the Ministry of the Interior was measured, of which we selected for our case study: M.J. (year 1997) - front crawl. On the 100-metre track, in the first twenty-five metres, the proband reached the swimming efficiency of 98.4% with a coefficient of variation of 0.074% and swam at a mean speed of 2.29 m.s-2. The proband K.D. (1993) reached, on th

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

30306 - Sport and fitness sciences

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 11th International Conference on Kinanthropology

ISBN

978-80-210-8917-4

ISSN

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e-ISSN

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Number of pages

9

Pages from-to

365-373

Publisher name

MUNI Press

Place of publication

Brno

Event location

Brno

Event date

Nov 29, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000467203700037