Browsing Brage INN by Author "Ellefsen, Stian"
Now showing items 1-20 of 23
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Adaptations to strength training differ between endurance-trained and untrained women
Vikmoen, Olav; Raastad, Truls; Ellefsen, Stian; Rønnestad, Bent (Peer reviewed; Journal article, 2020)Purpose: The purpose of this study was to investigate if endurance athletes, sustaining their normal endurance training, experience attenuated adaptations to strength training compared to untrained individuals. Methods: ... -
Benefits of higher resistance‐training volume are related to ribosome biogenesis
Hammarström, Daniel; Øfsteng, Sjur Johansen; Koll, Lise; Hanestadhaugen, Marita; Hollan, Ivana; Apro, William; Whist, Jon Elling; Blomstrand, Eva; Rønnestad, Bent; Ellefsen, Stian (Peer reviewed; Journal article, 2019)Resistance‐exercise volume is a determinant of training outcomes. However not all individuals respond in a dose‐dependent fashion. In this study, 34 healthy individuals (males n = 16, 23.6 (4.1) years; females n = 18, 22.0 ... -
Chronic obstructive pulmonary disease does not impair responses to resistance training
Mølmen, Knut Sindre; Hammarström, Jens Konrad Daniel; Falch, Gunnar Slettaløkken; Grundtvig, Morten; Koll, Lise; Hanestadhaugen, Marita; Khan, Yusuf; Ahmad, Rafi; Malerbakken, Bente; Rødølen, Tore Jørgen; Lien, Roger; Rønnestad, Bent; Raastad, Truls; Ellefsen, Stian (Peer reviewed; Journal article, 2021) -
Chronic obstructive pulmonary disease does not impair responses to resistance training
Mølmen, Knut Sindre; Hammarström, Jens Konrad Daniel; Falch, Gunnar Slettaløkken; Grundtvig, Morten; Koll, Lise; Hanestadhaugen, Marita; Khan, Yusuf; Ahmad, Rafi; Malerbakken, Bente; Rødølen, Tore J.; Lien, Roger; Rønnestad, Bent; Raastad, Truls; Ellefsen, Stian (Peer reviewed; Journal article, 2021)Background: Subjects with chronic obstructive pulmonary disease (COPD) are prone to accelerated decay of muscle strength and mass with advancing age. This is believed to be driven by disease-inherent systemic pathophysiologies, ... -
Diets and drugs for weight loss and health in obesity - An update
Aaseth, Jan Olav; Ellefsen, Stian; Alehagen, Urban; Sundfør, Tine Mejlbo; Alexander, Jan (Peer reviewed; Journal article, 2021)Numerous combinations of diets and pharmacological agents, including lifestyle changes, have been launched to treat obesity. There are still ambiguities regarding the efficacies of different approaches despite many clinical ... -
Diets and drugs for weight loss and health in obesity – An update
Aaseth, Jan; Ellefsen, Stian; Alehagen, Urban; Sundfør, Tine M.; Alexander, Jan (Peer reviewed; Journal article, 2021)Numerous combinations of diets and pharmacological agents, including lifestyle changes, have been launched to treat obesity. There are still ambiguities regarding the efficacies of different approaches despite many clinical ... -
Effects of Heavy Strength Training on Running Performance and Determinants of Running Performance in Female Endurance Athletes
Vikmoen, Olav; Raastad, Truls; Seynnes, Olivier; Bergstrøm, Kristoffer; Ellefsen, Stian; Rønnestad, Bent R. (Peer reviewed; Journal article, 2016)Purpose The purpose of the current study was to investigate the effects of adding strength training to normal endurance training on running performance and running economy in well-trained female athletes. We hypothesized ... -
Effects of including sprints during prolonged cycling on hormonal and muscular responses and recovery in elite cyclists
Almquist, Nicki Winfield; Ellefsen, Stian; Sandbakk, Øyvind; Rønnestad, Bent (Peer reviewed; Journal article, 2020)This study investigated the acute effects of including 30‐second sprints during prolonged low‐intensity cycling on muscular and hormonal responses and recovery in elite cyclists. Twelve male cyclists (VO2max, 73.4 ± 4.0 ... -
The expression of genes involved in excitatory and inhibitory neurotransmission in turtle (Trachemys scripta) brain during anoxic submergence at 21°C and 5°C reveals the importance of cold as a preparatory cue for anoxia survival
Couturier, Christine Stephanie; Stecyk, Jonathan Anthony William; Ellefsen, Stian; Sandvik, Guro Katrine; Milton, Sarah L.; Prentice, Howard M.; Nilsson, Göran Erik (Peer reviewed; Journal article, 2019)We investigated if transcriptional responses are consistent with the arrest of synaptic activity in the anoxic turtle (Trachemys scripta) brain. Thirty-nine genes of key receptors, transporters, enzymes and regulatory ... -
Extreme anoxia tolerance in crucian carp and goldfish through neofunctionalization of duplicated genes creating a new ethanol- producing pyruvate decarboxylase pathway
Fagernes, Cathrine Elisabeth; Stensløkken, Kåre-Olav; Kjendseth, Åsmund Røhr; Berenbrink, Michael; Ellefsen, Stian; Nilsson, Göran Erik (Journal article; Peer reviewed, 2017)Without oxygen, most vertebrates die within minutes as they cannot meet cellular energy demands with anaerobic metabolism. However, fish of the genus Carassius (crucian carp and goldfish) have evolved a specialized ... -
Factors Influencing Running Velocity at Lactate Threshold in Male and Female Runners at Different Levels of Performance
Støa, Eva Maria; Helgerud, Jan; Rønnestad, Bent; Hansen, Joar; Ellefsen, Stian; Støren, Øyvind (Peer reviewed; Journal article, 2020)Background: The primary aim was to examine the relationship between lactate threshold (LT) expressed as percentage of maximal oxygen uptake (VO2max) and running velocity at LT (LTV). A secondary aim was to investigate to ... -
Glucose ingestion before and after resistance training sessions does not augment ribosome biogenesis in healthy moderately trained young adults
Lian, Kristian; Hammarström, Daniel; Hamarsland, Håvard; Mølmen, Knut Sindre; Moen, Sara Christine; Ellefsen, Stian (Peer reviewed; Journal article, 2024)Purpose Resistance training-induced skeletal muscle hypertrophy seems to depend on ribosome biogenesis and content. High glucose treatment may augment ribosome biogenesis through potentiating resistance training-induced ... -
Improved cycling performance with ingestion of hydrolyzed marine protein depends on performance level
Vegge, Geir; Rønnestad, Bent R.; Ellefsen, Stian (Journal article; Peer reviewed, 2012)The effect on performance of protein ingestion during or after exercise is not clear. This has largely been attributed to the utilization of different scientific protocols and the neglection of accounting for factors ... -
Increased biological relevance of transcriptome analyses in human skeletal muscle using a model-specific pipeline
Khan, Yusuf; Hammarström, Jens Konrad Daniel; Rønnestad, Bent; Ellefsen, Stian; Ahmad, Rafi (Peer reviewed; Journal article, 2020)Abstract Background: Human skeletal muscle responds to weight-bearing exercise with signifcant inter-individual diferences. Investigation of transcriptome responses could improve our understanding of this variation. ... -
Krill oil supplementation in vivo promotes increased fuel metabolism and protein synthesis in cultured human skeletal muscle cells
Katare, Parmeshwar Bajirao; Dalmao-Fernandez, Andrea; Mengeste, Abel Mulu; Navabakbar, Farnaz; Hamarsland, Håvard; Ellefsen, Stian; Berge, Rolf Kristian; Bakke, Hege Gilbø; Nyman, Tuula Anneli; Kase, Eili Tranheim; Rustan, Arild Christian; Thoresen, G. Hege (Peer reviewed; Journal article, 2024)Introduction: Krill oil is a dietary supplement derived from Antarctic krill; a small crustacean found in the ocean. Krill oil is a rich source of omega-3 fatty acids, specifically eicosapentaenoic acid and docosahexaenoic ... -
The Kynurenine Pathway in Healthy Subjects and Subjects with Obesity, Depression and Chronic Obstructive Pulmonary Disease
Farup, Per Grønaas; Hamarsland, Håvard; Mølmen, Knut Sindre; Ellefsen, Stian; Hestad, Knut (Peer reviewed; Journal article, 2023)Background: Changes in tryptophan metabolism through the kynurenine pathway (KP) are observed in several disorders and coupled with pathophysiological deviations. Methods: This study retrospectively compared the KP in serum ... -
Life without Oxygen: Gene Regulatory Responses of the Crucian Carp (Carassius carassius) Heart Subjected to Chronic Anoxia
Stensløkken, Kåre-Olav; Ellefsen, Stian; Vasieva, Olga; Fang, Yongxiang; Farrell, Anthony P.; Olohan, Lisa; Vaage, Jarle; Nilsson, Göran E.; Cossins, Andrew R. (Journal article; Peer reviewed, 2014)Crucian carp are unusual among vertebrates in surviving extended periods in the complete absence of molecular oxygen. During this time cardiac output is maintained though these mechanisms are not well understood. Using a ... -
Muscular performance decreases with increasing complexity of resistance exercises in subjects with chronic obstructive pulmonary disease
Mølmen, Knut Sindre; Evensen Thy, Jonas; Thallaug Dalane, Stine; Ellefsen, Stian; Falch, Gunnar Slettaløkken (Peer reviewed; Journal article, 2019)Chronic obstructive lung disease (COPD) is associated with impaired muscle functions in addition to the impaired cardiopulmonary capacity inherent to the disease. The purpose of this study was to compare muscular performance ... -
Normalization of gene expression data revisited: the three viewpoints of the transcriptome in human skeletal muscle undergoing load-induced hypertrophy and why they matter
Khan, Yusuf; Hammarström, Daniel; Ellefsen, Stian; Ahmad, Rafi (Peer reviewed; Journal article, 2022)The biological relevance and accuracy of gene expression data depend on the adequacy of data normalization. This is both due to its role in resolving and accounting for technical variation and errors, and its defining role ... -
Resistance exercise training increases skeletal muscle mitochondrial respiration in chronic obstructive pulmonary disease
Oberholzer, Laura; Mølmen, Knut Sindre; Hammarström, Daniel; Falch, Gunnar Slettaløkken; Lundby, Anne-Kristine; Rønnestad, Bent; Ellefsen, Stian; Lundby, Carsten (Peer reviewed; Journal article, 2022)Chronic obstructive pulmonary disease (COPD) is associated with skeletal muscle mitochondrial dysfunction. Resistance exercise training (RT) is a training modality with a relatively small pulmonary demand that has been ...