Muscle synergies of multidirectional postural control in astronauts on Earth after a long-term stay in space
Shota Hagio, Akihiko Ishihara, Masahiro Terada, Hiroko Tanabe, Benio Kibushi, Akira Higashibata, Shin Yamada, Satoshi Furukawa, Chiaki Mukai, Noriaki Ishioka, Motoki Kouzaki
Abstract
The human neuromuscular system has adapted to the gravitational environment on Earth. Here, we demonstrated that prolonged exposure to a microgravity environment in space changes the functional coordination of multiple muscle activities regarding multidirectional standing postural control. Furthermore, the amount of change led to a greater regulatory balancing activity needed for postural control immediately after returning to Earth and differences in muscular coordination before space flight and 3 mo after the return to Earth.
Topics & Concepts
SpaceflightWeightlessnessPhysical medicine and rehabilitationLeg muscleMuscle fatigueMotor controlElectromyographyBiologyNeuroscienceMedicinePhysicsAstronomyMotor Control and AdaptationBalance, Gait, and Falls PreventionSpaceflight effects on biology