Blar i Brage NIH på tidsskrift "Frontiers in Physiology"

Viser treff 21-36 av 36

    • Impact of menstrual function on hormonal response to repeated bouts of intense exercise 

      Melin, Anna Katarina; Ritz, Christian; Faber, Jens; Skouby, Sven; Pingel, Jessica; Sundgot-Borgen, Jorunn; Sjödin, Anders; Tornberg, Åsa B (Peer reviewed; Journal article, 2019)
      Background: Strenous exercise stimulates the hypothalamic-pituitary (HP) axis in order to ensure homeostasis and promote anabolism. Furthermore, exercise stimulates a transient increase in the neurotrophin brain-derived ...

    • Mechanical and material tendon properties in patients with proximal patellar tendinopathy 

      Wiesinger, Hans-Peter; Seynnes, Olivier R.; Kösters, Alexander; Müller, Erich; Rieder, Florian (Peer reviewed; Journal article, 2020)
      Introduction: The effect of chronic patellar tendinopathy on tissue function and integrity is currently unclear and underinvestigated. The aim of this cohort comparison was to examine morphological, material, and mechanical ...

    • MicroRNAs in muscle: characterizing the powerlifter phenotype 

      D'Souza, Randall F.; Bjørnsen, Thomas; Zeng, Nina; Aasen, Kirsten M. M.; Raastad, Truls; Cameron-Smith, David; Mitchell, Cameron J. (Journal article; Peer reviewed, 2017-06-07)
      Powerlifters are the epitome of muscular adaptation and are able to generate extreme forces. The molecular mechanisms underpinning the significant capacity for force generation and hypertrophy are not fully elucidated. ...

    • Progress update and challenges on VO2max testing and interpretation 

      Martin-Rincon, Marcos; Calbet, Jose Antonio Lopez (Peer reviewed; Journal article, 2020)
      The maximal oxygen uptake (VO2max) is the primary determinant of endurance performance in heterogeneous populations and has predictive value for clinical outcomes and all-cause mortality. Accurate and precise measurement ...

    • 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 ...

    • The relationship between selected load-velocity profile parameters and 50 m front crawl swimming performance 

      Gonjo, Tomohiro; Njøs, Nikolai; Eriksrud, Ola; Olstad, Bjørn Harald (Peer reviewed; Journal article, 2021)
      The purpose of the present study was to establish relationships between sprint front crawl performance and a swimming load-velocity profile. Fourteen male national-level swimmers performed 50 m front crawl and semi-tethered ...

    • Reliability of a semi-tethered front crawl sprint performance test in adolescent swimmers 

      Szczepan, Stefan; Wróblewska, Zofia; Klich, Sebastian; Michalik, Kamil; Gonjo, Tomohiro; Olstad, Bjørn Harald; Rejman, Marek (Peer reviewed; Journal article, 2023)
      This study aimed to evaluate the test-retest reliability of a sprint performance test with semi-tethered front crawl swimming to indirectly assess the current potential to perform at maximal anaerobic effort in adolescent ...

    • Reliability of load-velocity profiling in front crawl swimming 

      Olstad, Bjørn Harald; Gonjo, Tomohiro; Njøs, Nikolai; Abächerli, Kathrin; Eriksrud, Ola (Peer reviewed; Journal article, 2020)
      The purposes of this study were to establish test-retest reliability of calculating load-velocity profiles in front crawl swimming using five and three different external loads, and if outcome results were comparable between ...

    • Similar energy expenditure during BodyPump and heavy load resistance exercise in overweight women 

      Rustaden, Anne Mette; Gjestvang, Christina; Bø, Kari; Haakstad, Lene Annette Hagen; Paulsen, Gøran (Peer reviewed; Journal article, 2020)
      Purpose: High-repetition, low-load resistance exercise in group class settings has gained popularity in recent years, with BodyPump as a prime example. For individuals using exercise for body-weight management, the energy ...

    • Sport-specific capacity to use elastic energy in the patellar and Achilles tendons of elite athletes 

      Wiesinger, Hans-Peter; Rieder, Florian; Kösters, Alexander; Müller, Erich; Seynnes, Olivier R. (Journal article; Peer reviewed, 2017)
      Introduction: During running and jumping activities, elastic energy is utilized to enhance muscle mechanical output and efficiency. However, training-induced variations in tendon spring-like properties remain under-investigated. ...

    • The role of skeletal muscle glycogen breakdown for regulation of insulin sensitivity by exercise 

      Jensen, Jørgen; Rustad, Per Inge; Kolnes, Anders Jensen; Lai, Yu-Chiang (Journal article; Peer reviewed, 2011-12-30)
      Glycogen is the storage form of carbohydrates in mammals. In humans the majority of glycogen is stored in skeletal muscles (∼500 g) and the liver (∼100 g). Food is supplied in larger meals, but the blood glucose concentration ...

    • The Training of Olympic Alpine Ski Racers 

      Gilgien, Matthias; Reid, Robert Cortas; Raschner, Christian; Supej, Matej; Holmberg, Hans-Christer (Journal article; Peer reviewed, 2018)
      Alpine combined was the only alpine ski racing event at the first Winter Olympic Games in 1936, but since then, slalom, giant slalom, super-G, downhill, and team events have also become Olympic events. Substantial improvements ...

    • 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 ...

    • Upper-Body Muscular Endurance Training Improves Performance Following 50 min of Double Poling in Well-Trained Cross-Country Skiers. 

      Børve, Jørgen; Jevne, Steffen N.; Rud, Bjarne; Losnegard, Thomas (Peer reviewed; Journal article, 2017)
      This study investigated the effect of muscular endurance training on O2-cost and performance in double poling (DP) on a rollerski treadmill. Twenty-two well-trained cross-country skiers (31 ± 4 years, 77 ± 9 kg, 181 ± 8 ...

    • 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) ...

    • Whole body vibration for chronic patellar tendinopathy: A randomized equivalence trial 

      Rieder, Florian; Wiesinger, Hans-Peter; Herfert, Jürgen; Lampl, Katrin; Hecht, Stefan; Niebauer, Josef; Maffulli, Nicola; Kösters, Alexander; Müller, Erich; Seynnes, Olivier R. (Peer reviewed; Journal article, 2022)
      Purpose: Whole body vibration (WBV) triggers anabolic responses in various tissues, including tendons, without requiring high force production. In this waitlist-controlled equivalence trial, we tested its clinical effectiveness ...