Blar i Brage NIH på forfatter "Werkhausen, Amelie"
-
Automated Characterization of Muscle Architectural Variation in Ultrasound Images
Kirkebø, Jan Egil; Werkhausen, Amelie; Seynnes, Olivier R.; Austeng, Andreas (Peer reviewed; Journal article, 2020)Fascicle (fiber bundle) orientation and length are useful parameters to infer the force potential of skeletal muscles. Ultrasound imaging is commonly used to determine fascicle characteristics. In most of the literature, ... -
Changes in balance strategy and neuromuscular control during a fatiguing balance task: A study in perturbed unilateral stance
Ritzmann, Ramona; Freyler, Kathrin; Werkhausen, Amelie; Gollhofer, Albert (Journal article; Peer reviewed, 2016-06-14)Fatigue impairs sensorimotor performance, reduces spinal reflexes and affects the interaction of antagonistic muscles in complex motor tasks. Although there is literature dealing with the interference of fatigue and postural ... -
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 ... -
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 ... -
Medial gastrocnemius muscle fascicles shorten throughout stance during sprint acceleration
Werkhausen, Amelie; Willwacher, Steffen; Albracht, Kirsten (Peer reviewed; Journal article, 2021)The compliant nature of distal limb muscle-tendon units is traditionally considered suboptimal in explosive movements when positive joint work is required. However, during accelerative running, ankle joint net mechanical ... -
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 ... -
The role of Achilles tendon properties in the mechanical function of the human triceps surae
Werkhausen, Amelie (Doctoral thesis, 2019)The mechanical output of the muscle-tendon unit (MTU) is in part governed by the viscoelastic nature of tendinous tissues. The tendon contributes to beneficial contractile conditions during various types of movement. Yet, ... -
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 ...