• Altered Triceps Surae Muscle-Tendon Unit Properties after 6 Months of Static Stretching 

      Moltubakk, Marie M.; Villars, Fabienne Olivia; Magulas, Melina Meyer; Magnusson, Stig P.; Seynnes, Olivier R.; Bojsen-Møller, Jens (Peer reviewed; Journal article, 2021)
      Introduction: This study examined the effects of 24 wk of daily static stretching of the plantarflexors (unilateral 4 × 60-s stretching, whereas the contralateral leg served as a control; n = 26) on joint range of motion ...
    • Concurrent validity and intrarater reliability of two ultrasound-based methods for assessing patellar tendon stiffness 

      Henriksen, Peter; Bojsen-Møller, Jens; Brage, Karen; Junge, Tina; Juul-Kristensen, Birgit; Thorlund, Jonas Bloch (Peer reviewed; Journal article, 2022)
      Introduction: Assessment of tendon stiffness in vivo traditionally involves maximal muscle contractions, which can be challenging in pain populations. Alternative methods are suggested, although the clinimetric properties ...
    • Distinct muscle-tendon interaction during running at different speeds and in different loading conditions 

      Werkhausen, Amelie; Cronin, Neil J.; Albracht, Kirsten; Bojsen-Møller, Jens; Seynnes, Olivier R. (Peer reviewed; Journal article, 2019)
      The interaction between the Achilles tendon and the triceps surae muscles seems to be modulated differently with various task configurations. Here we tested the hypothesis that the increased forces and ankle joint work ...
    • Heterogeneous loading of the human achilles tendon in Vivo 

      Bojsen-Møller, Jens; Magnusson, Peter S. (Journal article; Peer reviewed, 2015-10)
      The free Achilles tendon is considered a homogenous structure that transmits muscular force in a linear manner. However, the tendon undergoes longitudinal rotation and is separated in mechanically independent segments with ...
    • Influence of loading rate on patellar tendon mechanical properties in vivo 

      Kösters, Alexander; Wiesinger, Hans-Peter; Bojsen-Møller, Jens; Müller, Erich; Seynnes, Olivier R. (Journal article; Peer reviewed, 2014-03)
      Background: Rate-dependent properties of tendons have consistently been observed in vitro but in vivo studies comparing the effects of loading duration on this feature remain conflicting. The main purpose of the present ...
    • Linking muscle architecture and function in vivo: Conceptual or methodological limitations? 

      Werkhausen, Amelie; Gløersen, Øyvind; Nordez, Antoine; Paulsen, Gøran; Bojsen-Møller, Jens; Seynnes, Olivier Roger (Peer reviewed; Journal article, 2023)
      Background: Despite the clear theoretical link between sarcomere arrangement and force production, the relationship between muscle architecture and function remain ambiguous in vivo. Methods: We used two frequently used ...
    • Mechanical properties of the patellar tendon in elite volleyball players with and without patellar tendinopathy 

      Helland, Christian; Bojsen-Møller, Jens; Raastad, Truls; Seynnes, Olivier R.; Moltubakk, Marie M.; Jakobsen, Vidar; Bahr, Roald (Journal article; Peer reviewed, 2013)
      Background: Although differences in mechanical properties between symptomatic and healthy tendons have been observed for the Achilles tendon, the impact of tendinopathy on patellar tendon mechanics is not fully documented. ...
    • Mechanical properties, physiological behavior, and function of aponeurosis and tendon 

      Bojsen-Møller, Jens; Peter Magnusson, S (Peer reviewed; Journal article, 2019)
      During human movement, the muscle and tendinous structures interact as a mechanical system in which forces are generated and transmitted to the bone and energy is stored and released to optimize function and economy of ...
    • Muscle morphological and strength adaptations to endurance vs. resistance training 

      Farup, Jean; Kjølhede, Tue; Sørensen, Henrik; Dalgas, Ulrik; Møller, Andreas B.; Vestergaard, Poul F.; Ringgaard, Steffen; Bojsen-Møller, Jens; Vissing, Kristian (Journal article; Peer reviewed, 2012)
      Fascicle angle (FA) is suggested to increase as a result of fiber hypertrophy and furthermore to serve as the explanatory link in the discrepancy in the relative adaptations in the anatomical cross-sectional area (CSA) and ...
    • Physical requirements in Olympic sailing 

      Bojsen-Møller, Jens (Journal article; Peer reviewed, 2014-09-18)
      Physical fitness and muscular strength are important performance parameters in Olympic sailing although their relative importance changes between classes. The Olympic format consists of eight yacht types combined into 10 ...
    • 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 ...
    • Regional differences of [18F]-FDG uptake within the brain during fatiguing muscle contractions. 

      Kindred, John H.; Kalliokoski, Kari K.; Bojsen-Møller, Jens; Rudroff, Thorsten (Journal article; Peer reviewed, 2015-02-17)
      Background and Purpose: Many studies have shown that a position task is more difficult than a force task although both are performed at a similar net muscle force. Thus, the time to task failure is consistently shown to ...
    • Training-induced increase in Achilles tendon stiffness affects tendon strain pattern during running 

      Werkhausen, Amelie; Cronin, Neil J.; Albracht, Kirsten; Paulsen, Gøran; Larsen, Askild V.; Bojsen-Møller, Jens; Seynnes, Olivier R. (Peer reviewed; Journal article, 2019)
      Background: During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect ...