TY  - JOUR
A1  - Herssens, Nolan
A1  - Cowburn, James
A1  - Albracht, Kirsten
A1  - Braunstein, Bjoern
A1  - Cazzola, Dario
A1  - Colyer, Steffi
A1  - Minetti, Alberto E.
A1  - Pavei, Gaspare
A1  - Rittweger, Jörn
A1  - Weber, Tobias
A1  - Green, David A.
ED  - Cattaneo, Luigi
T1  - Movement in low gravity environments (MoLo) programme – the MoLo-L.O.O.P. study protocol
JF  - PLOS ONE / Public Library of Science
N2  - Exposure to prolonged periods in microgravity is associated with deconditioning of the musculoskeletal system due to chronic changes in mechanical stimulation. Given astronauts will operate on the Lunar surface for extended periods of time, it is critical to quantify both external (e.g., ground reaction forces) and internal (e.g., joint reaction forces) loads of relevant movements performed during Lunar missions. Such knowledge is key to predict musculoskeletal deconditioning and determine appropriate exercise countermeasures associated with extended exposure to hypogravity.
Y1  - 2022
U6  - http://dx.doi.org/10.1371/journal.pone.0278051
SN  - 1932-6203
VL  - 17
IS  - 11
PB  - Plos
CY  - San Francisco
ER  - 
TY  - CHAP
A1  - Richter, Charlotte
A1  - Braunstein, Bjoern
A1  - Stäudle, Benjamin
A1  - Attias, Julia
A1  - Suess, Alexander
A1  - Weber, T.
A1  - Rittweger, Joern
A1  - Green, David A.
A1  - Albracht, Kirsten
T1  - In vivo fascicle length of the gastrocnemius muscle during walking in simulated martian gravity using two different body weight support devices
T2  - 23rd Annual Congress of the European College of Sport Science, Dublin, Irland
Y1  - 2018
ER  - 
TY  - JOUR
A1  - Richter, Charlotte
A1  - Braunstein, Bjoern
A1  - Stäudle, Benjamin
A1  - Attias, Julia
A1  - Suess, Alexander
A1  - Weber, Tobias
A1  - Mileva, Katja N.
A1  - Rittweger, Joern
A1  - Green, David A.
A1  - Albracht, Kirsten
T1  - Gastrocnemius medialis contractile behavior is preserved during 30% body weight supported gait training
JF  - Frontiers in Sports and Active Living
N2  - Rehabilitative body weight supported gait training aims at restoring walking function as a key element in activities of daily living. Studies demonstrated reductions in muscle and joint forces, while kinematic gait patterns appear to be preserved with up to 30% weight support. However, the influence of body weight support on muscle architecture, with respect to fascicle and series elastic element behavior is unknown, despite this having potential clinical implications for gait retraining. Eight males (31.9 ± 4.7 years) walked at 75% of the speed at which they typically transition to running, with 0% and 30% body weight support on a lower-body positive pressure treadmill. Gastrocnemius medialis fascicle lengths and pennation angles were measured via ultrasonography. Additionally, joint kinematics were analyzed to determine gastrocnemius medialis muscle–tendon unit lengths, consisting of the muscle's contractile and series elastic elements. Series elastic element length was assessed using a muscle–tendon unit model. Depending on whether data were normally distributed, a paired t-test or Wilcoxon signed rank test was performed to determine if body weight supported walking had any effects on joint kinematics and fascicle–series elastic element behavior. Walking with 30% body weight support had no statistically significant effect on joint kinematics and peak series elastic element length. Furthermore, at the time when peak series elastic element length was achieved, and on average across the entire stance phase, muscle–tendon unit length, fascicle length, pennation angle, and fascicle velocity were unchanged with respect to body weight support. In accordance with unchanged gait kinematics, preservation of fascicle–series elastic element behavior was observed during walking with 30% body weight support, which suggests transferability of gait patterns to subsequent unsupported walking.
KW  - AlterG
KW  - rehabilitation
KW  - gait
KW  - walking
KW  - ultrasound imaging
KW  - series elastic element behavior
KW  - muscle fascicle behavior
KW  - unloading
Y1  - 2021
U6  - http://dx.doi.org/10.3389/fspor.2020.614559
SN  - 2624-9367
VL  - 2021
IS  - 2
PB  - Frontiers
CY  - Lausanne
ER  -