Blar i NTNU Open på forfatter "Danielsen, Jørgen"
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Relationships between hemoglobin and endurance performance
Galåen, Håvard Kne (Bachelor thesis, 2023)Hensikt: Hensikten med denne litteraturstudien var å undersøke mulige sammenhenger mellom hemoglobinmasse (Hb-masse) eller hemoglobinkonsentrasjon (Hb-kons) og utholdenhetsprestasjon og herunder undersøke hvor trenbart ... -
The role of external power demand on the choice of technique in classic cross-country skiing
Ettema, Gertjan; Skovereng, Knut; Ritman, Tobias Elvevold; Danielsen, Jørgen (Peer reviewed; Journal article, 2023)In cross-country skiing, athletes use different techniques akin to locomotor gaits such as walking and running. Transitions between these techniques generally depend on speed and incline, in a similar way as walk-run ... -
The role of stroke rate and intensity on rowing technique
Ettema, Gertjan; Haug, Aurora Aasrud; Ludvigsen, Tonje Pedersen; Danielsen, Jørgen (Journal article; Peer reviewed, 2022)We investigated the notion that ergometer rowing technique at different intensities, but self-chosen stroke rates (SR) would resemble each other more than when rowing at other intensity-SR combinations. Twelve competitive ... -
Rotation sequence and marker tracking method affects the humerothoracic kinematics of manual wheelchair propulsion
Severin, Cecilia; Danielsen, Jørgen (Peer reviewed; Journal article, 2022)The literature on shoulder (humerothoracic) kinematics in manual wheelchair propulsion is growing. Inconsistencies in the reporting of which rotation sequence is used to compute three-dimensional (3D) angles complicates ... -
Seasonal Changes In Performance And Performance Determining Variables Among Cross-Country Skiers At Different Athletic Levels.
Engdahl, Jonatan (Master thesis, 2023)Abstrakt (Swedish) Bakgrund: Till dato finns det lite till ingen forskning som undersökt säsongsförändringar i prestation och prestationsbestämmande variabler hos längdskidåkare, speciellt mellan längdskidåkare på olika ... -
The Effect of Different High-Intensity Periodization Models on Endurance Adaptations
Sylta, Øystein; Tønnessen, Espen; Hammarström, Daniel; Danielsen, Jørgen; Skovereng, Knut; Ravn, Troels; Rønnestad, Bent; Sandbakk, Øyvind; Seiler, Stephen (Journal article; Peer reviewed, 2016)Purpose: This study aimed to compare the effects of three different high-intensity training (HIT) models, balanced for total load but differing in training plan progression, on endurance adaptations. Methods: Sixty-three ... -
The effect of exercise intensity on joint power and dynamics in ergometer double-poling performed by cross-country skiers
Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan (Journal article; Peer reviewed, 2017)The purpose of this study was to examine the effect of increasing exercise intensity on the role of joint powers in ergometer double poling (DP), while taking specific dynamic constraints into account. One main question ... -
The effect of intensity and stroke rate on timing and coordination during ergometer rowing
Ludvigsen, Tonje Pedersen (Master thesis, 2020)Formål: Hensikten med denne studien er å undersøke den individuelle og kombinerte effekten av intensitet og ro-takt på mekaniske og elektromyografiske (EMG) utfallsvariabler (dvs. amplitude og tidshendelser) og tidsprofiler ... -
The Effect of Intensity on Joint-Specific Power and Mechanical Energy during Double Poling in Elite Cross-Country Skiers
Danielsen, Jørgen (Master thesis, 2014)Purpose: The present study examined the absolute behavior and the relative contributions to poling power of 1) joint-specific powers and 2) total body power (Pbody, i.e. the rate of change in total body mechanical ... -
The effect of poling frequency on gross efficiency and performance in roller-ski double poling
Øvstehage, Vemund (Master thesis, 2020)Introduksjon: Stakefrekvens har vist seg å påvirke effektivitet og prestasjon i langrenn. Det er imidlertid begrenset kunnskap om sammenhengen mellom individuelt manipulert stakefrekvens og disse parameterne, ved forskjellige ... -
The influence of power and external load on choice of technique in classical roller-skiing
Elvevold Ritman, Tobias (Master thesis, 2021)Formål: I klassisk stil i langrenn er det tre hovedteknikker som er diagonal gang (DG), staking (ST) og staking med fraspark (STF). I klassisk stil, brukes ulike delteknikker mest avhengig av terreng. Hensikten med denne ... -
The role of power fluctuations in the preference of diagonal vs. double poling sub-technique at different incline-speed combinations in elite cross-country skiers
Dahl, Christine; Sandbakk, Øyvind; Danielsen, Jørgen; Ettema, Gertjan (Journal article; Peer reviewed, 2017)In classical cross-country skiing, diagonal stride (DIA) is the major uphill sub-technique, while double poling (DP) is used on relatively flat terrain. Although, the dependence of incline and speed on the preference of ... -
The Security Politics of Hybrid Operations
Danielsen, Jørgen (Master thesis, 2023)Begrepet "Hybrid Warfare" ble sterkt popularisert etter den russiske annekteringen av den ukrainske halvøya Krim i 2014. Til tross for at begrepet nylig har fått ny oppmerksomhet, betraktes konseptet av mange forskere som ... -
Validation of temporal parameters within the skating sub-techniques when roller skiing on a treadmill, using inertial measurement units
Meyer, Frederic; Seeberg, Trine Margrethe; Kocbach, Jan; Danielsen, Jørgen; Sandbakk, Øyvind; Austeng, Andreas (Peer reviewed; Journal article, 2022)The aim of this study was to develop and validate a method using inertial measurements units (IMUs) to determine inner-cycle parameters (e.g., cycle, poles and skis contact, and swing time) and the main sub-techniques ...