Johannes Tjønnås
Seniorforsker
Johannes Tjønnås
Seniorforsker
Publikasjoner og ansvarsområder
Datafangst i sporet skal gi gullski fra Madshus
Assessment of Basic Motions and Technique Identification in Classical Cross-Country Skiing
Basic Motions and Technique Identification in Classical Cross-Country Skiing
AutoActive Project - Tools and Methods for Autonomous Analysis of Human Activities from Wearable Device Sensor Data
Sex-based differences in speed, sub-technique selection, and kinematic patterns during low- and high-intensity training for classical cross-country skiing
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...
Norges skiløbere kører suverænt på avanceret sensor-teknologi
Ny teknologi kan gøre brugen af video overflødig, fordi målingerne er så præcise. Og sensorerne virker ude på løjperne - ikke kun i laboratoriet....
Researchers are helping elite skiers to hone their performance
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....
Ski-eliten kvesser teknikken med sensorer på kroppen
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....
Automatic Classification of Sub-Techniques in Classical Cross-Country Skiing Using a Machine Learning Algorithm on Micro-Sensor Data
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...