Browsing Brage NIH by Author "Gløersen, Øyvind Nøstdahl"
Now showing items 1-12 of 12
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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 ... -
Exercise intensity and pacing pattern during a cross-country Olympic mountain bike race
Næss, Steffan; Sollie, Ove; Gløersen, Øyvind Nøstdahl; Losnegard, Thomas (Peer reviewed; Journal article, 2021)Objective: To examine the power profiles and pacing patterns in relation to critical power (CP) and maximal aerobic power (MAP) output during a cross-country Olympic (XCO) mountain bike race. Methods: Five male and two ... -
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 ... -
Modeling V̇o2 on-kinetics based on intensity-dependent delayed adjustment and loss of efficiency (DALE)
Gløersen, Øyvind Nøstdahl; Colosio, Alessandro L.; Boone, Jan; Dysthe, Dag Kristian; Malthe-Sørenssen, Anders; Capelli, Carlo; Pogliaghi, Silvia (Peer reviewed; Journal article, 2022)This study presents and evaluates a new mathematical model of V̇o2 on-kinetics, with the following properties: 1) a progressively slower primary phase following the size-principle of motor unit recruitment, explaining the ... -
Oxygen demand, uptake, and deficits in elite cross-country skiers during a 15-km race
Gløersen, Øyvind Nøstdahl; Gilgien, Matthias; Dysthe, Dag Kristian; Malthe-Sørenssen, Anders; Losnegard, Thomas Johansen (Peer reviewed; Journal article, 2020)Purpose: This study aimed to quantify the repeated oxygen deficits attained during intermittent endurance exercise by measuring oxygen consumption (V˙O2) and oxygen demand (V˙O2dem) throughout a simulated roller ski ... -
Predicting missing marker trajectories in human motion data using marker intercorrelations
Gløersen, Øyvind Nøstdahl; Federolf, Peter (Journal article; Peer reviewed, 2016-03-31)Missing information in motion capture data caused by occlusion or detachment of markers is a common problem that is difficult to avoid entirely. The aim of this study was to develop and test an algorithm for reconstruction ... -
Propulsive Power in Cross-Country Skiing: Application and Limitations of a Novel Wearable Sensor-Based Method During Roller Skiing
Gløersen, Øyvind Nøstdahl; Losnegard, Thomas; Malthe-Sørenssen, Anders; Dysthe, Dag Kristian; Gilgien, Matthias (Journal article; Peer reviewed, 2018)Cross-country skiing is an endurance sport that requires extremely high maximal aerobic power. Due to downhill sections where the athletes can recover, skiersmust also have the ability to perform repeated efforts where ... -
Rate of force development relationships to muscle architecture and contractile behavior in the human vastus lateralis
Werkhausen, Amelie; Gløersen, Øyvind Nøstdahl; Nordez, Antoine; Paulsen, Gøran; Bojsen-Møller, Jens; Seynnes, Olivier R. (Peer reviewed; Journal article, 2022)In this study, we tested the hypotheses that (i) rate of force development (RFD) is correlated to muscle architecture and dynamics and that (ii) force–length–velocity properties limit knee extensor RFD. Twenty-one healthy ... -
Technique analysis in elite athletes using principal component analysis
Gløersen, Øyvind Nøstdahl; Myklebust, Håvard; Hallén, Jostein; Federolf, Peter Andreas (Journal article; Peer reviewed, 2018)The aim of this study was to advance current movement analysis methodology to enable a technique analysis in sports facilitating (1) concurrent comparison of the techniques between several athletes; (2) identification of ... -
Tracking Performance in Endurance Racing Sports: Evaluation of the Accuracy Offered by Three Commercial GNSS Receivers Aimed at the Sports Market
Gløersen, Øyvind Nøstdahl; Kocbach, Jan; Gilgien, Matthias (Journal article; Peer reviewed, 2018)Advances in global navigation satellite system (GNSS) technology have resulted in smaller and more accurate GNSS receivers, which have become increasingly suitable for calculating instantaneous performance parameters during ... -
Validity of Force-Velocity Profiling Assessed With a Pneumatic Leg Press Device
Lindberg, Kolbjørn Andreas; Eythorsdottir, Ingrid Eir Thorp; Solberg, Paul André; Gløersen, Øyvind Nøstdahl; Seynnes, Olivier R.; Bjørnsen, Thomas; Paulsen, Gøran (Peer reviewed; Journal article, 2021)Purpose: The aim of this study was to examine the concurrent validity of force–velocity (FV) variables assessed across 5 Keiser leg press devices. Methods: A linear encoder and 2 independent force plates (MuscleLab devices) ... -
Validity of velocity measurements of a motorized resistance device during change of direction
Eriksrud, Ola; Ahlbeck, Fredrik; Harper, Damian; Gløersen, Øyvind Nøstdahl (Peer reviewed; Journal article, 2022)The aim of this study was to determine validity of velocity measurements of a motorized resistance device (MRD) during change of direction (CoD). Eight male (age: 22.1 ± 4.2 yrs; weight: 83.3 ± 17.1 kg; height: 181.6 ± 12.6 cm) ...