Browsing NTNU Open by Author "Kocbach, Jan"
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Analysis of a Biathlon Sprint Competition and Associated Laboratory Determinants of Performance
Luchsinger, Harri; Talsnes, Rune; Kocbach, Jan; Sandbakk, Øyvind (Journal article; Peer reviewed, 2019)Biathlon is an Olympic winter-sport where cross-country (XC) skiing in the skating technique is combined with rifle shooting. In the biathlon sprint competition for men, three laps of 3.3-km are interspersed with a 5-shot ... -
Analysis of classical time-trial performance and technique-specific physiological determinants in elite female cross-country skiers
Sandbakk, Øyvind; Losnegard, Thomas; Skattebo, Øyvind; Hegge, Ann Magdalen; Tønnessen, Espen; Kocbach, Jan (Peer reviewed; Journal article, 2016)The present study investigated the contribution of performance on uphill, flat, and downhill sections to overall performance in an international 10-km classical time-trial in elite female cross-country skiers, as well as ... -
Analysis of race-preparation strategies, performance-development and physiological responses during an entire sprint competition in cross-country skiing
Berdal, Tore (Master thesis, 2022)Formål: Beskrive rennforberedelser, utvikling av prestasjon og fysiologiske responser under en hel sprintkonkurranse i langrenn. Metode: 20 mannlige junior langrennsutøvere deltok i en simulert langrennssprint, bestående ... -
Association between Laboratory Capacities and World-cup Performance in Nordic Combined
Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gertjan; Sandbakk, Øyvind (Journal article; Peer reviewed, 2017)Background Nordic combined (NC) is an Olympic winter-sport performed as a ski jumping (SJ) event followed by a cross-country (XC) pursuit race employing the skating style. Purpose To elucidate the associations ... -
The AutoActive Research Environment
Albrektsen, Sigurd Mørkved; Bøtker-Rasmussen, Kasper; Liverud, Anders Erik; Dalgard, Steffen Harald; Høgenes, Jakob; Jahren, Silje Ekroll; Kocbach, Jan; Seeberg, Trine Margrethe (Peer reviewed; Journal article, 2022)ARE consists of three different software modules; ActivityPresenter, a Matlab toolbox, and a Python toolbox. ActivityPresenter is created to simplify the process of visualising, synchronising, and organising data, such as ... -
Automated classification and quantification of spatio-temporal parameters in cross-country skiing skating technique by analysis of inertial sensor data and sensor insole data
Garsjø, Lene-Kristine (Master thesis, 2017)The aim of this thesis was (1) to develop a method for dividing cross-country skiing cycles into phases, and (2) extract and select features characterizing the change in center of pressure (CoP) during these phases. Both ... -
Automated detection and classification of movement cycles in cross-country skiing through analysis of inertial sensor data movement patterns
Meland, Henrik J. (Master thesis, 2017)Published technique analysis tools for movement patterns in cross-country skiing have accuracies ranging from 88% up to 98.5%, but reviews of these studies reveals that none have thoroughly addressed classifier robustness ... -
Comparison of Performance-Levels and Sex on Sprint Race Performance in the Biathlon World Cup
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind (Journal article; Peer reviewed, 2017)Biathlon is an Olympic sport combining cross-country skiing with the skating technique and rifle shooting. The sprint (7.5 km for women and 10 km for men) includes two shootings between the three laps of skiing. The aims ... -
Contribution from cross-country skiing, start time and shooting components to the overall and isolated biathlon pursuit race performance
Luchsinger, Harri Simon; Kocbach, Jan; Ettema, Gerardus Johannes C; Sandbakk, Øyvind (Peer reviewed; Journal article, 2020)Purpose Biathlon is an Olympic sport combining 3–5 laps of cross-country skiing with rifle shooting, alternating between the prone and standing shooting positions between laps. The individual distance and the sprint are ... -
Cross-Country Skiers With a Fast-Start Pacing Pattern Increase Time-Trial Performance by Use of a More Even Pacing Strategy
Losnegard, Thomas Johansen; Tosterud, Ola Kristoffer; Kjeldsen, Kasper; Olstad, Øyvind; Kocbach, Jan (Peer reviewed; Journal article, 2022)Purpose: To investigate whether skiers with a fast-start pacing pattern increase time-trial performance by use of a more even pacing strategy. Methods: Thirty-four skiers (∼17 y, 16 male) performed an individual 7.5 (3 × 2.5) ... -
Development of a Framework for the Investigation of Speed, Power and Kinematic Patterns in Para Cross-Country Sit-Skiing: A Case Study of an LW12 Athlete
Baumgart, Julia Kathrin; Haugnes, Pål; Bardal, Lars Morten; Østerås, Sindre; Kocbach, Jan; Sandbakk, Øyvind (Journal article; Peer reviewed, 2019)Objective: To develop a framework for the investigation of speed, power, and kinematic patterns across varying terrain in cross-country (XC) sit-skiing, and to test this framework in a XC sit-skier of the LW12 class during ... -
The dynamics of the anaerobic energy contribution during a simulated mass-start competition while roller-ski skating on a treadmill.
Noordhof, Dionne; Danielsson, Marius Lyng; Skovereng, Knut; Danielsen, Jørgen; Seeberg, Trine Margrethe; Haugnes, Pål; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind (Journal article; Peer reviewed, 2021)The purposes of this study were: 1) to investigate the anaerobic energy contribution during a simulated cross-country (XC) skiing mass-start competition while roller-ski skating on a treadmill; 2) to investigate the ... -
Estimation of mechanical power output employing deep learning on inertial measurement data in roller ski skating
Uddin, Md Zia; Seeberg, Trine Margrethe; Kocbach, Jan; Liverud, Anders E.; Gonzalez, Victor; Sandbakk, Øyvind; Meyer, Frederic (Peer reviewed; Journal article, 2021)The ability to optimize power generation in sports is imperative, both for understanding and balancing training load correctly, and for optimizing competition performance. In this paper, we aim to estimate mechanical power ... -
Field- and laboratory-derived determinants of performance in sprint cross-country skiing: time-trial versus final performance
Brattebø, Jan-Magnus (Master thesis, 2022)Formål: Å undersøke felt- og laboratorie-baserte faktorer som påvirker utøvernes prestasjon i en sprintkonkurranse i langrenn. Siden prologen er godt undersøkt og det er mindre kunnskap om betydningen av prestasjonsbestemmende ... -
Framework for in-field analyses of performance and sub-technique selection in standing para cross-country skiers
Carlsen, Camilla Høivik; Baumgart, Julia Kathrin; Kocbach, Jan; Haugnes, Pål; Paulussen, Evy M. B.; Sandbakk, Øyvind (Peer reviewed; Journal article, 2021)Our aims were to evaluate the feasibility of a framework based on micro-sensor technology for in-field analyses of performance and sub-technique selection in Para cross-country (XC) skiing by using it to compare these ... -
How fast are cross-country skiers in the finish-sprint during a sprint competition? Book of Abstracts: "Performance in snow sports: Translating science into practice"
Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind (Research report, 2017) -
The influence of race tactics for performance in the heats of an international sprint cross-country skiing competition
Haugnes, Pål; Kocbach, Jan; Kjøsen Talsnes, Rune; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind (Peer reviewed; Journal article, 2022)The purpose of this study was to examine the influence of race tactics for performance in the heats of an international sprint cross-country (XC) skiing competition in the classical style. Thirty elite male XC skiers (age: ... -
Inner-Cycle Phases Can Be Estimated from a Single Inertial Sensor by Long Short-Term Memory Neural Network in Roller-Ski Skating
Meyer, Frederic; Lund-Hansen, Magne; Seeberg, Trine Margrethe; Kocbach, Jan; Sandbakk, Øyvind; Austeng, Andreas (Peer reviewed; Journal article, 2022)Objective: The aim of this study was to provide a new machine learning method to determine temporal events and inner-cycle parameters (e.g., cycle, pole and ski contact and swing time) in cross-country roller-ski skating ... -
Laboratory- and field-based performance-predictions in cross-country skiing and roller-skiing
Talsnes, Rune Kjøsen; Solli, Guro Strøm; Kocbach, Jan; Torvik, Per Øyvind; Sandbakk, Øyvind (Peer reviewed; Journal article, 2021)The purpose of the present study was to investigate how various laboratory- and field-based tests predict on-snow cross-country (XC) skiing and roller-skiing performance. Thirty-three national-level male XC skiers (19.0±2.5 ... -
One long vs. two short sessions? Physiological and perceptual responses to low-intensity training at self-selected speeds in cross-country skiers
Talsnes, Rune Kjøsen; Nordgården, Sigrid; Kocbach, Jan; Solli, Guro Strøm (Peer reviewed; Journal article, 2022)Purpose: To compare self-selected speeds and corresponding physiological responses and perceived training stress between 1 long session versus 2 shorter sessions of low-intensity training (LIT) in 1 day among cross-country ...