Assessment of specific coordination in dancesport using FitLight Trainer device and IMU sensor

[M. Prelević]

99 str.

Fizičko vaspitanje i sport - Nauke fizičkog vaspitanja, sporta i rekreacije / hysical Education and Sports - Sciences of Physical Education, Sports and Recreation

Plesne discipline, unutar sportskog plesa kao umetničkog sporta, su jedne od najkreativnijih sportskih disciplina, sa kineziološke strane posmatrano. Međutim, specifičnosti svake od njih, čak i unutar plesne discipline (različiti plesni stilovi) predstavljaju značajan izazov prilikom usaglašavanja i postavljanja kriterijuma u sistemu sporta. Takođe, pronalaženje adekvatnih alata i metoda, koje bi pomogle trenerima da unaprede rad sa sportistima, u savremenom dobu je neophodnost, te je motivacija ovog rada bila inspirisana i potrebom za boljim razumevanjem primene pomoćnih tehnologija u svakodnevnoj praksi kao pomagala i korisnog alata za trenere u realnim sportskim okolnostima. U skladu sa uočenim problemima, postavljena su dva cilja istraživanja, kojima se ovaj rad bavio. Cilj istraživanja 1 je bio utvrđivanje relacije između dve primenjene metode, uređaja kojima su merena vremena izvođenja novih testova specifične koordinacije plesača: FitLight Trainer uređaja i IMU senzora. Cilj je bio da se utvrdi da li IMU postavljen na metatarzalni deo stopala može da obezbedi validne i pouzdane vremenske mere testova u poređenju sa rezultatima dobijenim FitLight Trainer uređajem. U istraživanju utvrđivanja odnosa između dve primenjene metode merenja, FitLight Trainer uređaja i IMU senzora, uzorak je obuhvatao 21 učesnika, plesača iz različitih plesnih disciplina. Rezultati ovog istraživanja su potvrdili opštu hipotezu Ho1 – Komparacija metoda merenja, FitLight Trainer uređaja i IMU senzora, će pokazati usaglašenost rezultata dve primenjene metode. Ukupno vreme izvođenja testova, izmereno FitLight Trainer i IMU uređajem, je pokazalo visoke nivoe saglasnosti. Visoke ICC vrednosti (0,967 ≤ ICC ≤ 0,994) ukazuju na visoku konzistentnost rezultata dobijenih korišćenjem dva uređaja. Ovo je podržano relativnim razlikama, izraženim u procentima (-0,06% ≤ relativne razlike ≤ 1,16%), između ukupnih vremena izvođenja testova dobijenih korišćenjem dva uređaja. Nadalje, Bland–Altmanovi dijagrami ne pokazuju statističku značajnost u razlikama između vremena izvođenja primenjenih testova izračunatih korišćenjem dva uređaja (−0,0076 s ≤ bias ≤ 0,0498 s). Test-retest pouzdanosti IMU senzora i FitLight Trainer uređaja, za procenu ukupnog vremena za sva četiri primenjena testa, je pokazao usklađene vrednosti koeficijenta varijacije IMU-a (6,5% ≤ cV ≤ 12,0%) i FitLight Trainer-a (6,6% ≤ cV ≤ 12,1%). Te možemo zaključiti, da kao alternativa drugim uređajima, IMU uređaj se pokazao da može da obezbedi tačna merenja vremena u testovima kompleksnih pokreta donjih ekstremiteta. Kao glavne prednosti, u odnosu na FitLight Trainer uređaj koji je uzet kao standard, uočene su mala veličina IMU sistema i moguće praćenje upotrebe više senzora na različitim delovima tela u isto vreme. IMU se pokazao kao mobilniji, lakši i jednostavniji za upotrebu od FitLight Trainer uređaja. To da ne utiče na performanse sportista je u skladu sa činjenicom da pomoćna tehnologija treba da prati aktivnost bez ometanja ili promene performansi. Istraživanje 2 je imalo za cilj konstruisanje i definisanje metrijskih karakteristika novih taping testova specifične koordinacije, kao mernog instrumenta, koji će se koristiti u trenažnom procesu i kontroli nivoa razvijenosti specifične koordinacije i spretnosti donjih ekstremiteta plesača u različitim plesnim disciplinama. Ukupan uzorak istraživanja je obuhvatao 25 učesnika, od čega je njih 21 učestvovalo i u Istraživanju 1. Uzorak je obuhvatao 18 iskusnih plesača (minimum nacionalni nivo) iz različitih plesnih disciplina uključujući latino-američke i standardne plesove, moderni i savremeni ples, hip-hop, kao i kontrolnu grupu od 7 učesnika, studenata Fakulteta za sport i fizičko vaspitanje, Univerziteta u Beogradu, većinom aktivnih sportista u drugim sportskim granama. Od 18 plesača, 12 učesnika su bile žene i 6 muškaraca, starije omladinske (16 – 19 godina) i seniorske (19+) kategorije, dok je u kontrolnoj grupi bilo 7 muškaraca (19 godina)...

Dance disciplines within the artistic sport, DanceSport, are one of the most creative sports disciplines, from a kinesiological point of view. However, the specificities of each of them, even within a dance discipline (different dance styles) represent a significant challenge when harmonizing and setting criteria in the sports system. Also, finding adequate tools and methods, which would help coaches to improve their work with athletes, is a necessity in the modern era, and the motivation of this study was also inspired by the need for a better understanding of the application of assistive technologies in everyday practice as an aid and useful tool for coaches in real sports circumstances. The goal of research 1 was to determine the relationship between the two applied methods, the devices used to measure the performance times of new tests of specific coordination of dancers: FitLight Trainer device and the IMU sensor. The aim was to determine if the IMU placed on the metatarsal part of the foot could provide valid and reliable time measures of the tests compared to the results obtained with the FitLight Trainer device. In a study to determine the relationship between the two applied measurement methods, the FitLight Trainer device and the IMU sensor, the sample included 21 participants. The results of this research confirmed the general hypothesis Ho1 - Comparison of measurement methods, FitLight Trainer device and IMU sensor, will show the consistency of the results of the two applied methods. Total test performance times, measured by the FitLight Trainer and the IMU device, showed high levels of agreement. High ICC values (0.967 ≤ ICC ≤ 0.994) indicate a high consistency of the results obtained using the two devices. This is supported by the relative differences, expressed as percentages (-0.06% ≤ relative differences ≤ 1.16%), between the total test execution times obtained using the two devices. Furthermore, the Bland–Altman diagrams do not show statistical significance in the differences between the times of execution of the applied tests calculated using the two devices (−0.0076 s ≤ bias ≤ 0.0498 s). Regarding the test-retest reliability of the IMU for total time estimation for all four applied tests, the coefficient of variation (6.5% ≤ cV ≤ 12.0%) is consistent with the coefficient of variation of the FitLight Trainer (6.6% ≤ cV ≤ 12.1%). We can conclude that as an alternative to other devices, the IMU device has proven to be able to provide accurate time measurements in tests of complex movements of the lower extremities. The main advantages compared to the FitLight Trainer device, which was taken as standard, were the small size of the IMU system and the possible monitoring of the use of multiple sensors on different parts of the body at the same time. The IMU proved to be more mobile, lighter and easier to use than the FitLight Trainer device. That it does not affect the athletes' performance is consistent with the fact that the assistive technology should follow the activity without interfering with or altering the performance. Research 2 dealt with construction and validation of new tests of specific coordination, as a measuring instrument, which will be used in the training process and control of the level of development of specific coordination of dancers in different dance disciplines. This research was devoted to defining the metric characteristics of tests for evaluating the specific coordination of dancers. The total research sample included 25 participants, of which 21 also participated in Research 1. Of these, 18 experienced dancers (minimum national level) from various dance disciplines including latin - american and standard dances, modern and contemporary dance, hip hop, as well as a control group of 7 participants, students of the Faculty of Sports and Physical Education, University of Belgrade. Out of 18 dancers, 12 participants are women and 6 men, youth (16 – 19 years) and adult (19+) categories, while in the control group there are 7 men (19 years old)...

sportski ples, inercijalna merna jedinica, Fitlight Trainer, merenja pokreta donjih ekstremiteta, testovi koordinacije

DanceSport, inertial measurement unit, Fitlight Trainer, lower limb movement measurements, coordination tests

796(043.3)

Tekst