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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

The effects of active and passive recovery on blood lactate concentration and performance in a simulated ice hockey task /

Kaczynski, Marek January 1989 (has links)
No description available.
52

In-line bruslení dětí předškolního věku / In-line skating of preschool children

Rácová, Šárka January 2016 (has links)
The aim of the diploma thesis is to find out, if preschool kid is able to pick up the in-line skating and to find out, if this activity is used among preschool kids in school or out of school form. The conditions for in-line skating in certain location is also researched. The methodology for teaching in-line skating of preschool kids is also made. The methodology is based on experiment. The main research issue of this thesis is to find out the realization of in- line skating with preschool kids. First chapter deals with general information about in-line skating, such as history of this sport, division into various branches and proper equipment. Second chapter informs about the connection between in-line skating and health. There are pros and cons which influence person's life, characterization of preschool age, motor development and what the appropriate age for children to start is. Third chapter is focused on technique and methodology of in-line skating. Practical part deals with the evaluation of the mastering level of in-line skating among preschool kids, which is researched with questionnaire and experiment. The questionnaire tells us if the in-line skating with preschool kids is provided by Kinder-gardens, parents or interest club in a certain location. All the research is done in town and on...
53

Biomecânica da patinação de atletas de hóquei sobre patins / Skating biomechanics of hockey athletes

Emerson José Zechin 26 January 2004 (has links)
O hóquei sobre patins é uma modalidade desportiva muita praticada em alguns países e totalmente desconhecida em outros. A velocidade da patinação é considerada, entre os aspectos técnicos do hóquei sobre patins, um dos mais importantes, devido a natureza veloz de uma partida deste jogo. O objetivo deste estudo foi avaliar qual a técnica adotada para o aumento da velocidade de patinação pelos atletas de hóquei sobre patins mediante análise cinemática. A amostra foi composta por 8 atletas de hóquei sobre patins da equipe do Sertãozinho Hóquei Clube de cada categoria: mirim, infanto-juvenil, e adulto em um total de 24 atletas. O estudo utilizou como procedimento de análise a cinemetria associada a um medidor de velocidade e aceleração de atleta posicionado em um percurso total de 6 metros. Foi solicitado aos atletas que realizassem uma passagem com velocidade (V1) próxima a 2,77m/s (10Km/h), outra com velocidade (V2) próxima a 4,16m/s (15km/h) e outra com a maior velocidade possível (V3). Os resultados obtidos permitem concluir que as técnicas adotadas para o aumento da velocidade de patinação pelos atletas de hóquei sobre patins foram o aumento da freqüência das passadas, o comprimento menor da passada 1 em relação a passada 2 e a passada 3, os comprimentos semelhantes entre a passada 2 e a passada 3 e um ângulo absoluto do tronco menor / Hockey on skates is a sport very well practiced in some countries and totally unknown in others. Due to the considered fast essence of hockey, skating velocity is regarded as one of the most important technical aspects of this game. The aim of this study was to evaluate, by means of kinematics analysis, which technique was employed by hockey athletes to increase the skating velocity. 24 hockey athletes of the Sertãozinho Hoquei Clube team, 8 from each category - preteen, teenager, and adult - composed the sample. The study used as analysis procedure the videography associated to a measurer of speed set in a total course of 6 meters. The athletes were asked to skate in 3 different velocities: 10Km/h (±2,77 m/s), 15km/h (±4,16 m/s) and as quickly as possible. The results showed that the techniques employed by the athletes to increase the skating velocity were: increase of step frequency, a smaller length of step 1 in relation to step 2 and 3, the same length for step 2 and 3 and a smaller absolute angle of trunk
54

The Rink

Alavi, Noura 01 April 2022 (has links)
When two elite, female figure skaters are both at a crossroads with their skating performance, they decide to form a same-sex skating pair for a chance to save their careers.
55

A Comparison of Pairs Figure Skaters in Repeated Jumps

Sands, William A., Kimmel, Wendy L., McNeal, Jeni R., Murray, Steven Ross, Stone, Michael H. 01 March 2012 (has links)
Trends in pairs figure skating have shown that increasingly difficult jumps have become an essential aspect of high-level performance, especially in the latter part of a competitive program. We compared a repeated jump power index in a 60 s repeated jump test to determine the relationship of repeated jump test to competitive rank and to measure 2D hip, knee, and ankle angles and angular velocities at 0, 20, 40, and 60 s. Eighteen National Team Pairs Figure Skaters performed a 60 s repeated jump test on a large switch-mat with timing of flight and ground durations and digital video recording. Each 60-s period was divided into 6, 10-s intervals, with power indexes (W/kg) calculated for each 10-s interval. Power index by 10-s interval repeated measures ANOVAs (RMANOVA) showed that males exceeded females at all intervals, and the highest power index interval was during 10 to 20 s for both sexes. RMANOVAs of angles and angular velocities showed main effects for time only. Power index and jumping techniques among figure skaters showed rapid and steady declines over the test duration. Power index can predict approximately 50% of competitive rank variance, and sex differences in jumping technique were rare.
56

A Novel and Effective Short Track Speed Skating Tracking System

Wang, Yuxuan 01 May 2012 (has links)
This dissertation proposes a novel and effective system for tracking high-speed skaters. A novel registration method is employed to automatically discover key frames to build the panorama. Then, the homography between a frame and the real world rink can be generated accordingly. Aimed at several challenging tracking problems of short track skating, a novel multiple-objects tracking approach is proposed which includes: Gaussian mixture models (GMMs), evolving templates, constrained dynamical model, fuzzy model, multiple templates initialization, and evolution. The outputs of the system include spatialtemporal trajectories, velocity analysis, and 2D reconstruction animations. The tracking accuracy is about 10 cm (2 pixels). Such information is invaluable for sports experts. Experimental results demonstrate the effectiveness and robustness of the proposed system.
57

Plantar forces during forward ice hockey skating : comparison between ice and treadmill conditions

Loh, Jonathan James January 2003 (has links)
No description available.
58

Biomechanics of the foot and ankle during ice hockey skating

Dewan, Curt January 2004 (has links)
No description available.
59

Lower limb joint kinematics of hockey skating

Chang, Ryan, 1978- January 2003 (has links)
No description available.
60

Determining Figure Skating Jump Under-Rotation in Real-Time Using IMU Sensors During Practice

Furgeson, Duncan O. 14 December 2022 (has links)
We explore the use of machine learning to detect under-rotation in figure skating jumps. Under- rotation in jumps is difficult for the skater to sense but learning to recognize under-rotation is an impor- tant part of learning proper jump technique. To address this difficulty, we present the Under-rotation Monitor, or UR Monitor, a system for detecting under-rotated figure skating jumps in real-time. UR Monitor uses a single inertial measurement unit (IMU) attached to the skater's waist that sends a stream of accelerometer and gyroscope data to a mobile phone via Bluetooth. The mobile phone creates and sends an input vector of each jump to a web-hosted API that returns a response from our trained classifier indicating whether it considered that jump as 'under-rotated', or 'completed rotation'. The classifier is trained and tested on a collection of 444 jumps, of which only 121 are under-rotated. We also present a process for addressing an imbalanced dataset on which the classifier trains. Our classifier achieves an F1-score of only 0.66, suggesting that noise and imbalance in the data set are significant issues.

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