20.500.12556/RUL-186224 Razvoj algoritma za analizo časovnih parametrov hoje pri gorskem smučanju z uporabo pospeškomerov ter vpliv dolžine palic pri hoji navkreber Development of an Algorithm for the Analysis of Temporal Gait Parameters in Ski Mountaineering Using Accelerometers and the Effect of Pole Length on Uphill Walking Gorsko smučanje je šport, pri katerem je hoja navkreber odvisna od telesne pripravljenosti, tehnike gibanja in uporabljene opreme. Eden izmed pomembnih delov opreme so smučarske palice, vendar je njihov vpliv na časovne parametre hoje pri gorskem smučanju še razmeroma slabo raziskan. V okviru zaključne naloge smo razvili algoritem za avtomatično analizo časovnih parametrov hoje pri gorskem smučanju z uporabo pospeškomerov, nameščenih na smučeh. Algoritem določa začetke in konce kontaktnih časov, ki ustrezajo obremenitvi in razbremenitvi smučke, ter na podlagi teh podatkov izračuna kontaktni čas, cikel hoje in čas dvojne opore. Delovanje algoritma smo preverili s primerjavo kontaktnih časov z ročnimi odčitki visokofrekvenčne kamere. Dodatno smo iz signalov pospeškomera, nameščenega na medenici, ocenili tudi silo reakcije podlage, izraženo kot večkratnik telesne teže. Meritve so bile izvedene na tekoči preprogi pri konstantnem naklonu, pri čemer so merjenci hodili s primarno, krajšo in daljšo dolžino palic. S pomočjo pridobljenih podatkov smo z linearnim mešanim modelom statistično ovrednotili vpliv dolžine palic na obravnavane parametre hoje. Rezultati so pokazali, da je dolžina palic statistično značilno vplivala na kontaktni čas in cikel hoje. Pri kratkih in dolgih palicah so bile predvidene vrednosti kontaktnega časa in cikla hoje nižje kot pri primarnih palicah, pri čemer je bil učinek izrazitejši pri kratkih palicah. Pri času dvojne opore so bile razlike sicer statistično značilne, vendar je bil učinek dolžine palic majhen, zato je njegov praktični pomen vprašljiv. Pri sili reakcije podlage se je statistično značilna razlika pokazala med kratkimi in primarnimi palicami, medtem ko med dolgimi in primarnimi palicami statistično značilne razlike nismo ugotovili. Razviti algoritem se je izkazal kot uporabno orodje za avtomatično obdelavo velikega števila korakov in nadaljnjo biomehansko analizo hoje pri gorskem smučanju. Ski mountaineering is a sport in which uphill walking depends on physical fitness, movement technique, and the equipment used. One important piece of equipment is ski poles, but their effect on temporal gait parameters in ski mountaineering remains relatively poorly studied. In this thesis, we developed an algorithm for the automatic analysis of temporal gait parameters in ski mountaineering using accelerometers mounted on the skis. The algorithm determines the beginnings and ends of contact times, which correspond to the loading and unloading of the ski, and uses this information to calculate contact time, gait cycle, and double support time. The performance of the algorithm was checked by comparing the contact times with manual readings from a high-speed camera. In addition, the ground reaction force was estimated from the signals of an accelerometer mounted on the pelvis and expressed as a multiple of body weight. The measurements were performed on a treadmill at a constant incline, with participants walking with primary, shorter, and longer pole lengths. Using the obtained data, the effect of pole length on the considered gait parameters was statistically evaluated with a linear mixed model. The results showed that pole length had a statistically significant effect on contact time and gait cycle. With shorter and longer poles, the predicted values of contact time and gait cycle were lower than with primary poles, with the effect being more pronounced for shorter poles. For double support time, the differences were statistically significant, but the effect of pole length was small, making its practical relevance questionable. For ground reaction force, a statistically significant difference was found between shorter and primary poles, while no statistically significant difference was found between longer and primary poles. The developed algorithm proved to be a useful tool for the automatic processing of a large number of steps and for further biomechanical analysis of gait in ski mountaineering. gorsko smučanje pospeškomeri algoritem kontaktni časi dolžina palic ski mountaineering accelerometers algorithm contact times pole length true false false Slovenski jezik Angleški jezik Zaključna naloga 2026-08-28 13:16:39 2026-08-28 13:16:51 2026-08-31 13:53:56 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 162016 286003459 22075.pdf 22075.pdf 1 D3759BD1B56F973D7C2E743A2CCB8111 c1b9bcd2b6945574120dc66208386162095ee47ba9ff44752f5afe7d2f686e8c 8e2b9ea3-a2d1-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245344 Fakulteta za matematiko in fiziko 0 0 0