Blar i Publikasjoner fra Cristin på forfatter "Seynnes, Olivier R."
-
Altered gastrocnemius contractile behavior in former Achilles tendon rupture patients during walking
Stäudle, Benjamin; Seynnes, Olivier R.; Laps, Guido; Brüggemann, Gert-Peter; Albracht, Kirsten (Peer reviewed; Journal article, 2022)Achilles tendon rupture (ATR) remains associated with functional limitations years after injury. Architectural remodeling of the gastrocnemius medialis (GM) muscle is typically observed in the affected leg and may compensate ... -
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 ... -
Architectural changes in superficial and deep compartments of the tibialis anterior during electrical stimulation over different sites
Carbonaro, Marco; Seynnes, Olivier R.; Maffiuletti, Nicola A.; Busso, Chiara; Minetto, Marco Alessandro; Botter, Alberto (Peer reviewed; Journal article, 2020)Electrical stimulation is widely used in rehabilitation to prevent muscle weakness and to assist the functional recovery of neural deficits. Its application is however limited by the rapid development of muscle fatigue due ... -
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, ... -
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 ... -
Eccentric cycling does not improve cycling performance in amateur cyclists
Paulsen, Gøran; Eidsheim, Hedda; Helland, Christian; Seynnes, Olivier R.; Solberg, Paul André; Rønnestad, Bent (Peer reviewed; Journal article, 2019)Eccentric cycling training induces muscle hypertrophy and increases joint power output in non-athletes. Moreover, eccentric cycling can be considered a movement-specific type of strength training for cyclists, but it is ... -
Effectiveness of individualized training based on force: Velocity profiling on physical function in older men
Lindberg, Kolbjørn Andreas; Lohne-Seiler, Hilde; Fosstveit, Sindre Herskedal; Sibayan, Erlend E.; Fjeller, Joachim S.; Løvold, Sondre; Kolnes, Tommy M.; Vårvik, Fredrik Tonstad; Berntsen, Sveinung; Paulsen, Gøran; Seynnes, Olivier R.; Bjørnsen, Thomas (Peer reviewed; Journal article, 2022)The study aimed to investigate the effectiveness of an individualized power training program based on force–velocity (FV) profiling on physical function, muscle morphology, and neuromuscular adaptations in older men. ... -
Effects of specific collagen peptide supplementation combined with resistance training on Achilles tendon properties
Jerger, Simon; Centner, Christoph; Lauber, Benedikt; Seynnes, Olivier R.; Sohnius, Tim; Jendricke, Patrick; Oesser, Steffen; Gollhofer, Albert; König, Daniel (Peer reviewed; Journal article, 2022)The purpose of this study was to investigate the effect of specific collagen peptides (SCP) combined with resistance training (RT) on changes in tendinous and muscular properties. In a randomized, placebo-controlled study, ... -
Effects of tracking landmarks and tibial point of resistive force application on the assessment of patellar tendon mechanical properties in vivo
Mersmann, Falk; Seynnes, Olivier R.; Legerlotz, Kirsten; Arampatzis, Adamantios (Journal article; Peer reviewed, 2018)The different methods used to assess patellar tendon elongation in vivo may partly explain the large variation of mechanical properties reported in the literature. The present study investigated the effects of tracking ... -
Isokinetic resistance training combined with eccentric overload improves athletic performance and induces muscle hypertrophy in young ice hockey players
Horwath, Oscar; Paulsen, Gøran; Esping, Tobias; Seynnes, Olivier R.; Olsson, Monica Charlotte (Peer reviewed; Journal article, 2019)Objectives: To determine the combined effects of slow isokinetic resistance training and eccentric overload and compare it to traditional resistance training on strength, power, body composition and muscle hypertrophy in ... -
Low-Load Blood Flow Restriction and High-Load Resistance Training Induce Comparable Changes in Patellar Tendon Properties
Centner, Christoph; Jerger, Simon; Lauber, Benedikt; Seynnes, Olivier R.; Friedrich, Till; Lolli, David; Gollhofer, Albert; König, Daniel (Peer reviewed; Journal article, 2022)Introduction: Low-load resistance training with blood flow restriction (LL-BFR) has emerged as a viable alternative to conventional high-load (HL) resistance training regimens. Despite increasing evidence confirming ... -
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 ... -
Musculoskeletal adaptations to strength training in frail elderly: A matter of quantity or quality?
Aas, Sigve Nyvik; Breit, Markus; Karsrud, Stian; Aase, Ole Jølle; Rognlien, Simen Helset; Cumming, Kristoffer Toldnes; Reggiani, Carlo; Seynnes, Olivier R.; Rossi, Andrea; Toniolo, Luana; Raastad, Truls (Peer reviewed; Journal article, 2020)Background The improvement in muscle strength generally exceeds the increase in muscle size following strength training in frail elderly, highlighting the complex aetiology of strength deficit in aging. The aim of this ... -
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 ... -
Recovery from Achilles Tendon Repair: A Combination of Postsurgery Outcomes and Insufficient Remodeling of Muscle and Tendon
Stäudle, Benjamin; Seynnes, Olivier R.; Laps, Guido; Göll, Fabian; Brüggemann, Gert-Peter; Albracht, Kirsten (Peer reviewed; Journal article, 2021)Introduction: Achilles tendon rupture (ATR) patients have persistent functional deficits in the triceps surae muscle–tendon unit (MTU). The complex remodeling of the MTU accompanying these deficits remains poorly understood. ... -
Sarcolab pilot study into skeletal muscle’s adaptation to long-term spaceflight
Rittweger, Jörn; Albracht, Kirsten; Flück, Martin; Ruoss, Severin; Brocca, Lorenza; Longa, Emanuela; Moriggi, Manuela; Seynnes, Olivier R.; di Giulio, Irene; Tenori, Leonardo; Vignoli, Alessia; Capri, Miriam; Gelfi, Cecilia; Luchinat, Claudio; Franceschi, Claudio; Bottinelli, Roberto; Cerretelli, Paolo; Narici, Marco (Journal article; Peer reviewed, 2018)Spaceflight causes muscle wasting. The Sarcolab pilot study investigated two astronauts with regards to plantar flexor muscle size, architecture, and function, and to the underlying molecular adaptations in order to further ... -
Should we individualize training based on force-velocity profiling to improve physical performance in athletes?
Lindberg, Kolbjørn Andreas; Solberg, Paul André; Larsen, Tommy Mella; Abusdal, Gøran; Berntsen, Sveinung; Paulsen, Gøran; Sveen, Ole; Seynnes, Olivier R.; Bjørnsen, Thomas; Rønnestad, Bent R.; Frank, Martin Thorsen (Peer reviewed; Journal article, 2021)The present study aimed to examine the effectiveness of an individualized training program based on force-velocity (FV) profiling on jumping, sprinting, strength, and power in athletes. Forty national level team sport ... -
Similar patterns of tendon regional hypertrophy after low-load blood flow restriction and high-load resistance training
Centner, Christoph; Jerger, Simon; Lauber, Benedikt; Seynnes, Olivier R.; Friedrich, Till; Lolli, David; Gollhofer, Albert; König, Daniel (Peer reviewed; Journal article, 2023)Purpose: Recent evidence indicates that low-load blood flow restriction (LL-BFR) training elicits an anabolic response in tendinous tissue. The purpose of the present study was to investigate the hypertrophic pattern induced ... -
Simple muscle architecture analysis (SMA): An ImageJ macro tool to automate measurements in B-mode ultrasound scans
Seynnes, Olivier R.; Cronin, Neil J. (Peer reviewed; Journal article, 2020)In vivo measurements of muscle architecture (i.e. the spatial arrangement of muscle fascicles) are routinely included in research and clinical settings to monitor muscle structure, function and plasticity. However, in most ... -
Strength training and protein supplementation improve muscle mass, strength, and function in mobility-limited older adults: a randomized controlled trial
Aas, Sigve Nyvik; Seynnes, Olivier R.; Benestad, Haakon Breien; Raastad, Truls (Peer reviewed; Journal article, 2019)Background Adaptation to strength training in very old mobility-limited individuals is not fully characterized. Therefore, the aim of this study was to perform a thorough investigation of the adaptation to a lower body ...