Blar i Brage NIH på forfatter "Gilgien, Matthias"
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A new training assessment method for alpine ski racing: Estimating center of mass trajectory by fusing inertial sensors with periodically available position anchor points
Fasel, Benedikt; Gilgien, Matthias; Spörri, Jörg; Aminian, Kamiar (Journal article; Peer reviewed, 2018)In this study we present and validate a method to correct velocity and position drift for inertial sensor-based measurements in the context of alpine ski racing. Magnets were placed at each gate and their position determined ... -
Alpine Ski Motion Characteristics in Slalom
Reid, Robert Cortas; Haugen, Per; Gilgien, Matthias; Kipp, Ronald; Smith, Gerald (Peer reviewed; Journal article, 2020)Important insight into ski function, and ultimately skier technique and tactics, can be gained by studying how measured ski trajectories compare to predictions based on theoretical models of ski-snow interaction mechanics. ... -
Analysis of a severe head injury in world cup alpine skiing
Yamazaki, Junya; Gilgien, Matthias; Kleiven, Svein; McIntosh, Andrew S.; Nachbauer, Werner; Müller, Erich; Bere, Tone Tufte; Bahr, Roald; Krosshaug, Tron (Journal article; Peer reviewed, 2015-06)Traumatic brain injury (TBI) is the leading cause of death in alpine skiing. It has been found that helmet use can reduce the incidence of head injuries between 15% and 60%. However, knowledge on optimal helmet performance ... -
Application of dGNSS in alpine ski racing: Basis for evaluating physical demands and safety
Gilgien, Matthias; Kröll, Josef; Spörri, Jörg; Crivelli, Philip; Müller, Erich (Journal article; Peer reviewed, 2018)External forces, such as ground reaction force or air drag acting on athletes' bodies in sports, determine the sport-specific demands on athletes' physical fitness. In order to establish appropriate physical conditioning ... -
Assessment of the steady glide phase in ski jumping
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias (Peer reviewed; Journal article, 2022)The purpose of this investigation was to compare how key variables of the steady glide phase relate to performance in the two hill sizes used in World Cup and Olympic competitions, i.e, normal and large hills. In this ... -
Characterisation of skiers’ mechanics, course setting and terrain geomorphology in World Cup Alpine Skiing using global navigation satellite systems: Injury risk, performance and methodological aspects
Gilgien, Matthias (Doctoral thesis, 2014)This study was undertaken to characterize course setting, terrain geomorphology and skier mechanics in World Cup (WC) alpine skiing. Since there was no existing appropriate methodology to capture skier mechanics across ... -
Characterization of course and terrain and their effect on skier speed in World Cup alpine ski racing.
Gilgien, Matthias; Crivelli, Philip; Spörri, Jörg; Kröll, Josef; Müller, Erich (Journal article; Peer reviewed, 2015-03-11)World Cup (WC) alpine ski racing consists of four main competition disciplines (slalom, giant slalom, super-G and downhill), each with specific course and terrain characteristics. The International Ski Federation (FIS) has ... -
Classification of cross-country ski skating sub-technique can be automated using carrier-phase differential GNSS measurements of the head's position
Gløersen, Øyvind Nøstdahl; Gilgien, Matthias (Peer reviewed; Journal article, 2021)Position–time tracking of athletes during a race can provide useful information about tactics and performance. However, carrier-phase differential global navigation satellite system (dGNSS)-based tracking, which is accurate ... -
The effect of foot setting on kinematic and kinetic skiing parameters during giant slalom: A single subject study on a Paralympic gold medalist sit skier
Petrone, Nicola; Vanzetto, Dario; Marcolin, Giuseppe; Bruhin, Björn; Gilgien, Matthias (Peer reviewed; Journal article, 2020)Objectives: Aim was to study the effect of monoski foot adjustment on kinematic and kinetic skiing parameters expressing sit skier’s technique. Design: Independent variable was skier position with respect to bindings, ... -
Effect of ski geometry and standing height on kinetic energy: equipment designed to reduce risk of severe traumatic injuries in alpine downhill ski racing.
Gilgien, Matthias; Spörri, Jörg; Kröll, Josef; Müller, Erich (Journal article; Peer reviewed, 2016)Background: Injuries in downhill (DH) are often related to high speed and, therefore, to high energy and forces which are involved in injury situations. Yet to date, no study has investigated the effect of ski geometry and ... -
Effect of ski geometry on aggressive ski behaviour and visual aesthetics: equipment designed to reduce risk of severe traumatic knee injuries in alpine giant slalom ski racing.
Kröll, Josef; Spörri, Jörg; Gilgien, Matthias; Schwameder, Hermann; Müller, Erich (Journal article; Peer reviewed, 2015-11-24)Background/Aim: Aggressive ski-snow interaction is characterised by direct force transmission and difficulty of getting the ski off its edge once the ski is carving. This behaviour has been suggested to be a main contributor ... -
Exercise intensity during cross-country skiing described by oxygen demands in flat and uphill terrain
Karlsson, Øyvind; Gilgien, Matthias; Gløersen, Øyvind Nøstdahl; Rud, Bjarne; Losnegard, Thomas (Peer reviewed; Journal article, 2018)Purpose: In this study wearable global navigation satellite system units were used on athletes to investigate pacing patterns by describing exercise intensities in flat and uphill terrain during a simulated cross-country ... -
External forces acting in direction of travel and their relation to energy dissipation in slalom
Gilgien, Matthias (Master thesis, 2008)The share of literature describing the kinetics of alpine skiing is limited in general, but especially for the discipline slalom. In recent kinematical studies energy dissipation, a measure for the quality of skiing, turned ... -
How to Prevent Injuries in Alpine Ski Racing: What Do We Know and Where Do We Go from Here
Spörri, Jörg; Kröll, Josef; Gilgien, Matthias; Müller, Erich (Journal article; Peer reviewed, 2016-08-01)Alpine ski racing is known to be a sport with a high risk of injury and a high proportion of time-loss injuries. In recent years, substantial research efforts with regard to injury epidemiology, injury etiology, potential ... -
Injury prevention in Super-G alpine ski racing through course design
Gilgien, Matthias; Crivelli, Philip; Kröll, Josef; Müller, Erich; Spörri, Jörg; Luteberget, Live (Peer reviewed; Journal article, 2021)In Super-G alpine ski racing mean speed is nearly as high as in Downhill. Hence, the energy dissipated in typical impact accidents is similar. However, unlike Downhill, on Super-G courses no training runs are performed. ... -
Investigation of individual strategies in the aerial phase in ski jumping
Jølstad, Petter Andre Husevåg; Gilgien, Matthias; Elfmark, Ola (Peer reviewed; Journal article, 2023)The purpose of this investigation was to examine the performance strategy of three ski jumpers during the steady glide phase and explain how different strategical solutions can lead to jumps of roughly the same length. In ... -
Kinematic determination of the aerial phase in ski jumping
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias; Jølstad, Petter Andre Husevåg (Peer reviewed; Journal article, 2022)The purpose of this study was to find a generic method to determine the aerial phase of ski jumping in which the athlete is in a steady gliding condition, commonly known as the ‘stable flight’ phase. The aerial phase of ... -
Mechanics of turning and jumping and skier speed are associated with injury risk in men's World Cup alpine skiing: a comparison between the competition disciplines
Gilgien, Matthias; Spörri, Jörg; Kröll, Josef; Crivelli, Philip; Müller, Erich (Journal article; Peer reviewed, 2014-01-31)Background/aim: In alpine ski racing, there is limited information about skiers’ mechanical characteristics and their relation to injury risk, in particular for World Cup (WC) competitions. Hence, current findings from ... -
Methods to assess validity of positioning systems in team sports: Can we do better?
Luteberget, Live Steinnes; Jølstad, Petter Andre Husevåg; Gilgien, Matthias (Peer reviewed; Journal article, 2023)Objectives: There is previously reported a large variety of criterion measures and reference systems applied to validate position tracking systems in sports. This study aims to investigate the effect of different criterion ... -
Olympic Games during nationwide lockdown: Sports injuries and illnesses, including COVID-19, at the Beijing 2022 Winter Olympics
Soligard, Torbjørn; Palmer, Debbie; Steffen, Kathrin; Lopes, Alexandre Dias; Grek, Natalia; He, Xuan; Wang, Yan; Grant, Marie-Elaine; Toresdahl, Brett G; Gilgien, Matthias; Budgett, Richard; Engebretsen, Lars (Peer reviewed; Journal article, 2023)Objective: The objective of this study is to describe the incidence of injuries and illnesses sustained during the Beijing Winter Olympic Games from 4 February 2022 to 20 February 2022. Methods: We recorded the daily number ...