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Gender-related differences in mechanics of the sprint start and sprint acceleration of top national-level sprinters
Dragan Mirkov, Olivera M. Knezevic, Amador García Ramos, Milan Čoh, Nejc Šarabon, 2020, izvirni znanstveni članek

Opis: Background: Within the current study we aimed at exploring gender-related differences and the relationship between sprint start block kinematics and kinetics and sprint acceleration force-velocity (F-v) relationship parameters (maximal force [F0], maximal velocity [v0], maximal power [Pmax] and slope) in top national-level sprinters. (2) Methods: Twenty-eight sprinters (6 females) performed 10 maximal 30-m sprints. Start block and acceleration kinematics and kinetics were collected with an instrumented sprint start block and a laser distance sensor (KiSprint system). Displacement-time data were used to determine the F-v relationship through Samozino's method. (3) Results: Start block rear foot maximal force (effect size [ES] = 1.08), rate of force development (ES = 0.90-1.33), F0 (ES = 1.38), v0 (ES = 1.83) and Pmax (ES = 1.95) were higher in males than in females (p -< 0.05). There were no differences in the slope, and ratio of horizontal-to-resultant force. F0, v0, and Pmax generally presented higher correlations with the start block kinetics (median r [range] = 0.49 [0.28, 0.78]) than with the kinematics (median r [range] = -0.27 [-0.52, 0.28]). (4) Conclusions: We confirmed that sprint block phase and sprint acceleration mechanics should be mutually assessed when analyzing sprinting performance. KiSprint system could provide more accurate information regarding mechanical pattern and technique during sprint initiation and acceleration, and potentially help create a more personalized and effective training program.
Ključne besede: force-velocity relationship, force platform, kinematics, kinetics, track-and-field
Objavljeno v RUP: 10.09.2020; Ogledov: 1172; Prenosov: 70
URL Povezava na celotno besedilo

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StreetGamez : a moving projector platform for prejected street games
Matjaž Kljun, Klen Čopič Pucihar, Mark Lochrie, Paul Egglestone, 2015, objavljeni znanstveni prispevek na konferenci

Opis: Moving Projector Platform (MPP) is a concept of using an autonomous vehicle, such as Unmanned Aerial Vehicle (UAV), commonly known as a 'drone', as a means to deliver and move the projection to arbitrary location. As a proof of concept this paper presents a design plan for a Moving Projector Game (MPG) called StreetGamez, which facilitates the game play through motion tracking and projection of a playing area, which can move and follow players in the game. This introduces novel abilities, such as: (i) to move the gaming platform before and during the game to the desired location and (ii) to free players from carrying the gaming equipment. Consequently this instigates possibilities to explore and study new exergame paradigms and players' attitudes towards the system as a whole. The concept also has the potential to provide a breakthrough in the social acceptance of drones in gaming scenarios whilst contributing to current debates on the legislation governing drone flights and furthering knowledge in human-drone interaction.
Ključne besede: moving projector platform, MPP, moving projector game, MPG, moving projector, moving projections, moving projection games, exergaming, exergame, UAV delivering platform, projecting game, projector game
Objavljeno v RUP: 08.08.2016; Ogledov: 4071; Prenosov: 120
URL Povezava na celotno besedilo

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