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Johannes Tjønnås

Senior Research Scientist

Johannes Tjønnås

Senior Research Scientist

Johannes Tjønnås
Phone: +47 408 25 940
Department: Mathematics and Cybernetics
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1647019

Objectives We investigated sex-based differences in speed, sub-technique selection, and kinematic patterns during low- (LIT) and high-intensity training (HIT) for classical cross-country (XC) skiing across varying terrain. Methods Six male and six female elite XC skiers with an approximately 15% dif...

Authors Solli Guro Strøm Kocbach Jan Seeberg Trine Margrethe Tjønnås Johannes Rindal Ole Marius Hoel Haugnes Pål Torvik Per Øyvind Sandbakk Øyvind
Year 2018
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1587460

Norwegian cross-country skiing is applying science to analyse how its elite athletes exploit their strengths during training and competition. The aims of this sensor-based research are to give skiers valuable advice about training and help them find the perfect pair of skis....

Authors Seeberg Trine Margrethe Sandbakk Øyvind Tjønnås Johannes Rindal Ole Marius Hoel Benjaminsen Christina
Year 2018
Type Media contribution
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1584865

Norsk langrennssport går vitenskapelig til verks for å analysere hvordan våre gullhåp utnytter kreftene sine når de går på ski. Sensorbasert forskning skal gi løperne verdifulle treningstips og hjelpe dem med å finne det helt perfekte skipar....

Authors Benjaminsen Christina Seeberg Trine Margrethe Sandbakk Øyvind Tjønnås Johannes Rindal Ole Marius Hoel
Year 2018
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1534305

The automatic classification of sub-techniques in classical cross-country skiing provides unique possibilities for analyzing the biomechanical aspects of outdoor skiing. This is currently possible due to the miniaturization and flexibility of wearable inertial measurement units (IMUs) that allow res...

Authors Rindal Ole Marius Hoel Seeberg Trine Margrethe Tjønnås Johannes Haugnes Pål Sandbakk Øyvind
Year 2018
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1509438

Commercial systems utilizing data from inertial measurement units (IMUs) to analyse movement patterns have not yet been adapted to monitor daily training in cross-country (XC) skiing. The main purposes of this study are to investigate: (1) the feasibility and potential of a multi-sensor system consi...

Authors Seeberg Trine Margrethe Tjønnås Johannes Rindal Ole Marius Hoel Haugnes Pål Dalgard Steffen Harald Sandbakk Øyvind
Year 2017
Type Journal publication