Prof. Dr. Adamantios Arampatzis
Profil
Forschungsthemen28
Adaptation der mechanischen und morphologischen Eigenschaften von Sehnen-Entwicklung von Trainingsmethoden auf der Grundlage zyklischer Dehnungen der Sehne
Quelle ↗Zeitraum: 01/2007 - 12/2009 Projektleitung: Prof. Dr. Adamantios Arampatzis
Anpassung der morphologischen und mechanischen Eigenschaften des Muskels und der Sehne durch exzentrisches Training - Effekt der Reizfrequenz
Quelle ↗Zeitraum: 11/2014 - 12/2016 Projektleitung: Prof. Dr. Adamantios Arampatzis
Eine neurobiologische Betrachtung von körperlicher Belastung, Kognition und Stress im Kontext Schule
Quelle ↗Zeitraum: 01/2008 - 12/2010 Projektleitung: Prof. Dr. Adamantios Arampatzis
Einfluss von Reizdichte und Belastungsvolumen auf den Adaptationsverlauf der Sehne
Quelle ↗Förderer: Bundesministerium des Innern Zeitraum: 01/2019 - 12/2020 Projektleitung: Prof. Dr. Adamantios Arampatzis
Entwicklung einer Methode zur Bestimmung des Muskelvolumens und des physiologischen Querschnitts zur Anwendung in der trainingsbegleitenden Leistungsdiagnostik
Quelle ↗Zeitraum: 01/2008 - 12/2009 Projektleitung: Prof. Dr. Adamantios Arampatzis
Entwicklung eines nicht-invasiven Verfahrens zur Bestimmung der Muskelfaserzusammensetzung
Quelle ↗Zeitraum: 05/2010 - 12/2011 Projektleitung: Prof. Dr. Adamantios Arampatzis
Evaluation eines Ansatzes der individualisierten Trainingssteuerung, bei dem die Eigenschaften von Muskel und Sehne differenziert diagnostiziert und durch Belastungsreize optimiert werden.
Quelle ↗Förderer: Bundesministerium des Innern Zeitraum: 01/2020 - 08/2022 Projektleitung: Prof. Dr. Adamantios Arampatzis
FOR 5177/2: Korrelation der Leistungsfähigkeit der Lendenwirbelsäule mit klinischen Outcomes nach einer gezielten Behandlung bei Patienten mit unteren Rückenschmerzen (TP 04)
Quelle ↗Förderer: DFG Kolleg-Forschungsgruppe Zeitraum: 05/2026 - 04/2030 Projektleitung: Prof. Dr. Adamantios Arampatzis, Dr. Sebastian Bohm
Forschungskooperation Bewegungsforschung
Quelle ↗Förderer: Andere inländische Stiftungen Zeitraum: 04/2013 - 12/2021 Projektleitung: Prof. Dr. Adamantios Arampatzis
Grandma, let's running: we got you wearables!
Quelle ↗Zeitraum: 02/2019 - 12/2019 Projektleitung: Prof. Dr. Adamantios Arampatzis
Hochschulpartnerschaften mit Griechenland - GGP-AGE
Quelle ↗Förderer: DAAD Zeitraum: 01/2017 - 12/2019 Projektleitung: Prof. Dr. Adamantios Arampatzis
Jahrestagung 2015 der dvs-Sektion Biomechanik
Quelle ↗Förderer: Bundesministerien Zeitraum: 03/2015 - 03/2015 Projektleitung: Prof. Dr. Adamantios Arampatzis
Konzeptionierung eines Übungskataloges
Quelle ↗Förderer: Wirtschaftsunternehmen / gewerbliche Wirtschaft Zeitraum: 11/2015 - 12/2015 Projektleitung: Prof. Dr. Adamantios Arampatzis
Konzeptionierung eines Übungskataloges
Quelle ↗Förderer: Wirtschaftsunternehmen / gewerbliche Wirtschaft Zeitraum: 01/2016 - 03/2016 Projektleitung: Prof. Dr. Adamantios Arampatzis
Krafttraining im Nachwuchsleistungssport
Quelle ↗Zeitraum: 09/2014 - 12/2019 Projektleitung: Prof. Dr. Adamantios Arampatzis
Krafttraining im Nachwuchsleistungssport 2.0
Quelle ↗Förderer: Bundesministerium des Innern Zeitraum: 02/2020 - 01/2024 Projektleitung: Prof. Dr. Adamantios Arampatzis
Lokomotorische Adaptationsfähigkeit bei älteren Menschen
Quelle ↗Zeitraum: 01/2008 - 12/2012 Projektleitung: Prof. Dr. Adamantios Arampatzis
Longitudinale Plastizität des Muskels - Entwicklung von Trainingsmethoden auf der Grundlage von exzentrischen Muskelkontraktionen
Quelle ↗Zeitraum: 01/2009 - 12/2010 Projektleitung: Prof. Dr. Adamantios Arampatzis
MiSpex-Network: Entwicklung, Evaluation und Transfer einer funktionsbezogenen Diagnostik, Prävention bei Rückenschmerz für den Spitzensport und die Gesamtgesellschaft
Quelle ↗Förderer: Sonstige Bundesmittel Zeitraum: 01/2015 - 12/2018 Projektleitung: Prof. Dr. Adamantios Arampatzis
MiSpex-Network: Entwicklung, Evaluation und Transfer einer funktionsbezogenen Diagnostik, Prävention, Therapie bei Rückenschmerz für den Spitzensport und die Gesamtgesellschaft
Quelle ↗Förderer: Sonstige Bundesmittel Zeitraum: 07/2011 - 12/2014 Projektleitung: Prof. Dr. Adamantios Arampatzis
Prävention von Dysbalancen der Muskel- und Sehnenadaptation bei Volleyballathleten im Jugendleistungssport
Quelle ↗Förderer: Bundesministerium des Innern Zeitraum: 11/2017 - 08/2020 Projektleitung: Prof. Dr. Adamantios Arampatzis
Steigerung der Laufökonomie durch trainingsinduzierte Modifikation der mechanischen Eigenschaften der Muskel-Sehnen-Einheit des Trizeps Surae
Quelle ↗Zeitraum: 01/2008 - 12/2008 Projektleitung: Prof. Dr. Adamantios Arampatzis
Stratifizierte Therapie und Nachsorge bei Rückenschmerzpatienten - ReNaBack, Phase II
Quelle ↗Förderer: Deutsche Rentenversicherung Zeitraum: 04/2020 - 09/2023 Projektleitung: Prof. Dr. Adamantios Arampatzis
Trainingsinduzierte Adaptation der mechanischen und morphologischen Eigenschaften der Sehne - Effekte von Dehnungsrate und Dehnungsdauer der Sehne
Quelle ↗Zeitraum: 04/2011 - 03/2013 Projektleitung: Prof. Dr. Adamantios Arampatzis
Ultrasonographische Bestimmung von Interventionseffekten auf die Muskelarchitektur-Charakteristik der Rotatorenmanschette
Quelle ↗Förderer: DAAD Zeitraum: 01/2013 - 12/2013 Projektleitung: Prof. Dr. Adamantios Arampatzis
VA: dvs 2015 - Sektion Biomechanik: Aktive Health - Bewegung ist gesund
Quelle ↗Förderer: DFG sonstige Programme Zeitraum: 03/2015 - 05/2015 Projektleitung: Prof. Dr. Adamantios Arampatzis
Verbesserung der Laufökonomie durch die Verlagerung des Kraftangriffspunktes nach anterior und durch die Erhöhung der Achillessehnesehnensteifigkeit sowie Maximalkraft der Plantarflexoren, mit dem Ziel die Modifikation des Muskeloutputs in den Beinen als ein Mechanismus für die Ökonomie zu belegen
Quelle ↗Zeitraum: 01/2017 - 12/2018 Projektleitung: Prof. Dr. Adamantios Arampatzis
Verbundprojekt: Verständnis und Prävention der Progression der primären Osteoarthrose
Quelle ↗Förderer: Bundesministerium für Forschung, Technologie und Raumfahrt Zeitraum: 03/2015 - 02/2019 Projektleitung: Prof. Dr. Adamantios Arampatzis
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Publikationen25
Top 25 nach Zitationen — Quelle: OpenAlex (BAAI/bge-m3 embedded für Matching).
Journal of Biomechanics · 430 Zitationen · DOI
Sports Medicine - Open · 422 Zitationen · DOI
The present meta-analysis provides elaborate statistical evidence that tendons are highly responsive to diverse loading regimens. However, the data strongly suggests that loading magnitude in particular plays a key role for tendon adaptation in contrast to muscle contraction type. Furthermore, intervention-induced changes in tendon stiffness seem to be more attributed to adaptations of the material rather than morphological properties.
Journal of Experimental Biology · 345 Zitationen · DOI
Tendons are able to remodel their mechanical and morphological properties in response to mechanical loading. However, there is little information about the effects of controlled modulation in cyclic strain magnitude applied to the tendon on the adaptation of tendon's properties in vivo. The present study investigated whether the magnitude of the mechanical load induced as cyclic strain applied to the Achilles tendon may have a threshold in order to trigger adaptation effects on tendon mechanical and morphological properties. Twenty-one adults (experimental group, N=11; control group, N=10) participated in the study. The participants of the experimental group exercised one leg at low-magnitude tendon strain (2.85+/-0.99%) and the other leg at high-magnitude tendon strain (4.55+/-1.38%) of similar frequency and volume. After 14 weeks of exercise intervention we found a decrease in strain at a given tendon force, an increase in tendon-aponeurosis stiffness and tendon elastic modulus and a region-specific hypertrophy of the Achilles tendon only in the leg exercised at high strain magnitude. These findings provide evidence of the existence of a threshold or set-point at the applied strain magnitude at which the transduction of the mechanical stimulus may influence the tensional homeostasis of the tendons. The results further show that the mechanical load exerted on the Achilles tendon during the low-strain-magnitude exercise is not a sufficient stimulus for triggering further adaptation effects on the Achilles tendon than the stimulus provided by the mechanical load applied during daily activities.
Journal of Electromyography and Kinesiology · 305 Zitationen · DOI
Influence of the muscle-tendon unit's mechanical and morphological properties on running economy
2006Journal of Experimental Biology · 245 Zitationen · DOI
The purpose of this study was to test the hypothesis that runners having different running economies show differences in the mechanical and morphological properties of their muscle-tendon units (MTU) in the lower extremities. Twenty eight long-distance runners (body mass: 76.8+/-6.7 kg, height: 182+/-6 cm, age: 28.1+/-4.5 years) participated in the study. The subjects ran on a treadmill at three velocities (3.0, 3.5 and 4.0 m s(-1)) for 15 min each. The V(O(2)) consumption was measured by spirometry. At all three examined velocities the kinematics of the left leg were captured whilst running on the treadmill using a high-speed digital video camera operating at 250 Hz. Furthermore the runners performed isometric maximal voluntary plantarflexion and knee extension contractions at eleven different MTU lengths with their left leg on a dynamometer. The distal aponeuroses of the gastrocnemius medialis (GM) and vastus lateralis (VL) were visualised by ultrasound during plantarflexion and knee extension, respectively. The morphological properties of the GM and VL (fascicle length, angle of pennation, and thickness) were determined at three different lengths for each MTU. A cluster analysis was used to classify the subjects into three groups according to their V(O(2)) consumption at all three velocities (high running economy, N=10; moderate running economy, N=12; low running economy, N=6). Neither the kinematic parameters nor the morphological properties of the GM and VL showed significant differences between groups. The most economical runners showed a higher contractile strength and a higher normalised tendon stiffness (relationship between tendon force and tendon strain) in the triceps surae MTU and a higher compliance of the quadriceps tendon and aponeurosis at low level tendon forces. It is suggested that at low level forces the more compliant quadriceps tendon and aponeurosis will increase the force potential of the muscle while running and therefore the volume of active muscle at a given force generation will decrease.
Journal of Biomechanics · 216 Zitationen · DOI
Journal of Biomechanics · 205 Zitationen · DOI
Journal of Biomechanics · 186 Zitationen · DOI
European Journal of Applied Physiology · 166 Zitationen · DOI
Journal of Experimental Biology · 165 Zitationen · DOI
The objectives of this work were (i) to investigate whether chronic endurance running is a sufficient stimulus to counteract the age-related changes in the mechanical and morphological properties of human triceps surae (TS) and quadriceps femoris (QF) muscle-tendon units (MTUs) by comparing runners and non-active subjects at different ages (young and old), (ii) to identify adaptational phenomena in running mechanics due to age-related changes in the mechanical and morphological properties of the TS and QF MTUs, and finally (iii) to examine whether chronic endurance-running exercise is associated with adaptational effects on running characteristics in old and young adults. The investigation was conducted on 30 old and 19 young adult males divided into two subgroups according to their running activity: endurance-runners vs non-active. To analyse the properties of the MTUs, all subjects performed isometric maximal voluntary (MVC) ankle plantarflexion and knee extension contractions at 11 different MTU lengths on a dynamometer. The activation of the TS and QF during MVC was estimated by surface electromyography. The gastrocnemius medialis and the vastus lateralis and their distal aponeuroses were visualized by ultrasonography at rest and during MVC, respectively. Ground reaction forces and kinematic data were recorded during running trials at 2.7 m s(-1). The TS and QF MTU capacities were reduced with aging (lower muscle strength and lower tendon stiffness). Runners and non-active subjects had similar MTU properties, suggesting that chronic endurance-running exercise does not counteract the age-related degeneration of the MTUs. Runners showed a higher mechanical advantage for the QF MTU while running (lower gear ratio) compared to non-active subjects, indicating a task-specific adaptation even at old age. Older adults reacted to the reduced capacities of their MTUs by increasing running safety (higher duty factor, lower flight time) and benefitting from a mechanical advantage for the TS MTU, lower rate of force generation and force generation per meter distance. We suggest that the improvement in running mechanics in the older adults happens due to a perceptual motor recalibration and a feed-forward adaptation of the motor task aimed at decreasing the disparity between the reduced capacity of the MTUs and the running effort.
Journal of Biomechanics · 159 Zitationen · DOI
Scientific Reports · 156 Zitationen · DOI
The need to move over uneven terrain is a daily challenge. In order to face unexpected perturbations due to changes in the morphology of the terrain, the central nervous system must flexibly modify its control strategies. We analysed the local dynamic stability and the modular organisation of muscle activation (muscle synergies) during walking and running on an even- and an uneven-surface treadmill. We hypothesized a reduced stability during uneven-surface locomotion and a reorganisation of the modular control. We found a decreased stability when switching from even- to uneven-surface locomotion (p < 0.001 in walking, p = 0.001 in running). Moreover, we observed a substantial modification of the time-dependent muscle activation patterns (motor primitives) despite a general conservation of the time-independent coefficients (motor modules). The motor primitives were considerably wider in the uneven-surface condition. Specifically, the widening was significant in both the early (+40.5%, p < 0.001) and late swing (+7.7%, p = 0.040) phase in walking and in the weight acceptance (+13.6%, p = 0.006) and propulsion (+6.0%, p = 0.041) phase in running. This widening highlighted an increased motor output's robustness (i.e. ability to cope with errors) when dealing with the unexpected perturbations. Our results confirmed the hypothesis that humans adjust their motor control strategies' timing to deal with unsteady locomotion.
Journal of Biomechanics · 152 Zitationen · DOI
Journal of Electromyography and Kinesiology · 150 Zitationen · DOI
Journal of Experimental Biology · 133 Zitationen · DOI
High strain magnitude and low strain frequency are important stimuli for tendon adaptation. Increasing the rate and duration of the applied strain may enhance the adaptive responses. Therefore, our purpose was to investigate the effect of strain rate and duration on Achilles tendon adaptation. The study included two experimental groups (N=14 and N=12) and a control group (N=13). The participants of the experimental groups exercised according to a reference protocol (14 weeks, four times a week), featuring a high strain magnitude (~6.5%) and a low strain frequency (0.17 Hz, 3 s loading/3 s relaxation) on one leg and with either a higher strain rate (one-legged jumps) or a longer strain duration (12 s loading) on the other leg. The strain magnitude and loading volume were similar in all protocols. Before and after the interventions, the tendon stiffness, Young's modulus and cross-sectional area were examined using magnetic resonance imaging, ultrasound and dynamometry. The reference and long strain duration protocols induced significantly increased (P<0.05) tendon stiffness (57% and 25%), cross-sectional area (4.2% and 5.3%) and Young's modulus (51% and 17%). The increases in tendon stiffness and Young's modulus were higher in the reference protocol. Although region-specific tendon hypertrophy was also detected after the high strain rate training, there was only a tendency of increased stiffness (P=0.08) and cross-sectional area (P=0.09). The control group did not show any changes (P=0.86). The results provide evidence that a high strain magnitude, an appropriate strain duration and repetitive loading are essential components for an efficient adaptive stimulus for tendons.
Sports Technology · 132 Zitationen · DOI
Abstract The purpose of this study was to examine the overall kinetics and the kinetics at the joints of the lower limb while sprinting at maximum speed, and to compare the data of a double transtibial amputee and able‐bodied controls running at the same level of performance. One double transtibial amputee, using dedicated sprinting prostheses, and five able‐bodied sprinters participated in the study. The athletes performed submaximal and maximal sprints (60 m) on an indoor track. All of the participants ran three times at each speed (maximal and submaximal). The athletes' kinematics were recorded using the Vicon 624 system with 12 cameras operating at 250 Hz. Four Kistler force plates (1250 Hz) were used to record ground reaction forces (GRF). External joint moments, joint work, and joint power were calculated from the GRF and the kinematic data. The analysis of total body kinetics revealed lower mechanical work during the stance phase for the double transtibial amputee using Cheetah prostheses than for the able‐bodied athletes running at the same speed. The joint kinetics showed lower external joint moments and joint power at the hip and the knee joints and higher values of joint power at the (prosthetic) ankle joint of the amputee than for the able‐bodied athletes. The ratio of the mechanical work at the ankle joint in the negative and the positive phase during stance was 0.907 for the carbon keels of the prostheses and 0.401 for the healthy ankle joints of the controls. The mechanical work at the knee joints was 11 times higher in the negative phase and 8.1 times higher in the positive phase during stance in the able‐bodied athletes than in the double transtibial amputee sprinter. It was assumed that due to reduced work at the joints of the lower limbs and less energy loss in the prosthetic leg, running with the dedicated prostheses allows for maximum sprinting at lower metabolic costs than in the healthy ankle joint complex. Keywords: sprinting prosthesesjoint kineticsdouble transtibial amputee Notes Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Carl‐Diem‐Weg 6, D‐50933 Koeln, Germany E‐mail: brueggemann@dshs‐koeln.de
Medicine & Science in Sports & Exercise · 132 Zitationen · DOI
The present results suggested that the degree of reproducibility and symmetry of kinematic data do not vary with a deliberate change in running technique but rather depend on the parameter itself. With respect to the economy of data analysis, the present findings indicate that recording a single monolateral trial would provide reproducible and symmetric values for most kinematic parameters.
Journal of Biomechanics · 125 Zitationen · DOI
Journal of Biomechanics · 122 Zitationen · DOI
The Journal of Strength and Conditioning Research · 121 Zitationen · DOI
The purposes of this study are (a) to examine the effects of contact time manipulation on jump parameters and (b) to examine the interaction between starting height changes and contact time changes on important jump parameters. Fifteen male athletes performed a series of drop jumps from heights of 20, 40, and 60 cm. The instructions given to the subjects were (a) "jump as high as you can" and (b) "jump high a little faster than your previous jump." Jumps were performed at each height until the athlete could not achieve a shorter ground contact time. The data were divided into 5 groups where group 1 was made up of the longest ground contact times of each athlete and groups 2-4 were composed of progressively shorter contact times, with group 5 having the shortest contact times. The jumps of group 3 produced the highest maximum and mean mechanical power (p <0.05) during the positive phase of the drop jumps regardless of starting jump height. The vertical takeoff velocities for the first 3 groups did not show significant (p < 0.05) differences. These results indicate that the manipulation of jump technique plays larger role than jump height in the manipulation of important jump parameters.
Clinical Biomechanics · 120 Zitationen · DOI
International Journal of Neural Systems · 114 Zitationen · DOI
We investigated the influence of three different high-pass (HP) and low-pass (LP) filtering conditions and a Gaussian (GNMF) and inverse-Gaussian (IGNMF) non-negative matrix factorization algorithm on the extraction of muscle synergies from myoelectric signals during human walking and running. To evaluate the effects of signal recording and processing on the outcomes, we analyzed the intraday and interday computation reliability. Results show that the IGNMF achieved a significantly higher reconstruction quality and on average needs one less synergy to sufficiently reconstruct the original signals compared to the GNMF. For both factorizations, the HP with a cut-off frequency of 250[Formula: see text]Hz significantly reduces the number of synergies. We identified the filter configuration of fourth order, HP 50[Formula: see text]Hz and LP 20[Formula: see text]Hz as the most suitable to minimize the combination of fundamental synergies, providing a higher reliability across all filtering conditions even if HP 250[Formula: see text]Hz is excluded. Defining a fundamental synergy as a single-peaked activation pattern, for walking and running we identified five and six fundamental synergies, respectively using both algorithms. The variability in combined synergies produced by different filtering conditions and factorization methods on the same data set suggests caution when attributing a neurophysiological nature to the combined synergies.
Proceedings of the Royal Society B Biological Sciences · 112 Zitationen · DOI
According to the force-length-velocity relationships, the muscle force potential is determined by the operating length and velocity, which affects the energetic cost of contraction. During running, the human soleus muscle produces mechanical work through active shortening and provides the majority of propulsion. The trade-off between work production and alterations of the force-length and force-velocity potentials (i.e. fraction of maximum force according to the force-length-velocity curves) might mediate the energetic cost of running. By mapping the operating length and velocity of the soleus fascicles onto the experimentally assessed force-length and force-velocity curves, we investigated the association between the energetic cost and the force-length-velocity potentials during running. The fascicles operated close to optimal length (0.90 ± 0.10 <i>L</i><sub>0</sub>) with moderate velocity (0.118 ± 0.039 <i>V</i><sub>max</sub> [maximum shortening velocity]) and, thus, with a force-length potential of 0.92 ± 0.07 and a force-velocity potential of 0.63 ± 0.09. The overall force-length-velocity potential was inversely related (<i>r</i> = -0.52, <i>p</i> = 0.02) to the energetic cost, mainly determined by a reduced shortening velocity. Lower shortening velocity was largely explained (<i>p</i> < 0.001, <i>R</i><sup>2</sup> = 0.928) by greater tendon gearing, shorter Achilles tendon lever arm, greater muscle belly gearing and smaller ankle angle velocity. Here, we provide the first experimental evidence that lower shortening velocities of the soleus muscle improve running economy.
Scientific Reports · 111 Zitationen · DOI
According to the force-length-velocity relationships, the muscle force potential during locomotion is determined by the operating fibre length and velocity. We measured fascicle and muscle-tendon unit length and velocity as well as the activity of the human vastus lateralis muscle (VL) during walking and running. Furthermore, we determined the VL force-length relationship experimentally and calculated the force-length and force-velocity potentials (i.e. fraction of maximum force according to the force-length-velocity curves) for both gaits. During the active state of the stance phase, fascicles showed significantly (p < 0.05) smaller length changes (walking: 9.2 ± 4.7% of optimal length (L<sub>0</sub>); running: 9.0 ± 8.4%L<sub>0</sub>) and lower velocities (0.46 ± 0.36 L<sub>0</sub>/s; 0.03 ± 0.83 L<sub>0</sub>/s) compared to the muscle-tendon unit (walking: 19.7 ± 5.3%L<sub>0</sub>, -0.94 ± 0.32 L<sub>0</sub>/s; running: 34.5 ± 5.8%L<sub>0</sub>, -2.59 ± 0.41 L<sub>0</sub>/s). The VL fascicles operated close to optimum length (L<sub>0</sub> = 9.4 ± 0.11 cm) in both walking (8.6 ± 0.14 cm) and running (10.1 ± 0.19 cm), resulting in high force-length (walking: 0.92 ± 0.08; running: 0.91 ± 0.14) and force-velocity (0.91 ± 0.08; 0.97 ± 0.13) potentials. For the first time we demonstrated that, in contrast to the current general conception, the VL fascicles operate almost isometrically and close to L<sub>0</sub> during the active state of the stance phase of walking and running. The findings further verify an important contribution of the series-elastic element to VL fascicle dynamics.
Journal of Biomechanics · 110 Zitationen · DOI
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Identität, Organisation und Kontakt aus HU-FIS.
- Name
- Prof. Dr. Adamantios Arampatzis
- Titel
- Prof. Dr.
- Fakultät
- Kultur-, Sozial- und Bildungswissenschaftliche Fakultät
- Institut
- Institut für Sportwissenschaft
- Arbeitsgruppe
- Trainings- und Bewegungswissenschaften
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