scholarly journals Motor strategies and adiabatic invariants: The case of rhythmic motion in parabolic flights

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
N. Boulanger ◽  
F. Buisseret ◽  
V. Dehouck ◽  
F. Dierick ◽  
O. White
Keyword(s):  
Adiabatic Invariants ◽  
Parabolic Flights ◽  
Motor Strategies

scholarly journals Adiabatic invariants drive rhythmic human motion in variable gravity

2019 ◽  
Author(s):  
N. Boulanger ◽  
F. Buisseret ◽  
V. Dehouck ◽  
F. Dierick ◽  
O. White
Keyword(s):  
Motor Control ◽  
Human Motion ◽  
Adiabatic Invariants ◽  
Human Motor Control ◽  
Changing Environments ◽  
Human Movements ◽  
Human Motor ◽  
Variable Gravity ◽  
Points Of View ◽  
Motor Strategies

AbstractNatural human movements are stereotyped. They minimise cost functions that include energy, a natural candidate from mechanical and physiological points of view. In time-changing environments, however, motor strategies are modified since energy is no longer conserved. Adiabatic invariants are relevant observables in such cases, although they have not been investigated in human motor control so far. We fill this gap and show that the theory of adiabatic invariants explains how humans move when gravity varies.

MEASUREMENTS OF PHORETIC VELOCITIES IN MICROGRAVITY CONDITIONS OF PARABOLIC FLIGHTS

2001 ◽  
Vol 32 ◽  
pp. 941-942
Author(s):  
F. PRODI ◽  
F. DUBOIS ◽  
A.A. VEDERNIKOV ◽  
G. SANTACHIARA ◽  
C. CORNETTI ◽  
...  
Keyword(s):  
Parabolic Flights ◽  
Microgravity Conditions

Motor strategies and excitability changes of human hand motor area are dependent on different voluntary drives

2006 ◽  
Vol 23 (12) ◽  
pp. 3399-3406 ◽  
Author(s):  
Zhen Ni ◽  
Nan Liang ◽  
Makoto Takahashi ◽  
Takamasa Yamashita ◽  
Susumu Yahagi ◽  
...  
Keyword(s):  
Motor Area ◽  
Human Hand ◽  
Hand Motor Area ◽  
Motor Strategies

Dynamics of Single Hydrogen Bubbles at Pt Microelectrodes in Microgravity

2021 ◽  
Author(s):  
Aleksandr Bashkatov ◽  
Xuegeng Yang ◽  
Gerd Mutschke ◽  
Barbara Fritzsche ◽  
Syed Sahil Hossain ◽  
...  
Keyword(s):  
Parabolic Flights ◽  
Hydrogen Bubbles ◽  
Bubble Evolution

The dynamics of single hydrogen bubbles electrogenerated in acidic electrolytes at a Pt microelectrode under potentiostatic conditions is investigated in microgravity during parabolic flights. Three bubble evolution scenarios have been...

Motor strategies of postural control after hemispheric stroke

2015 ◽  
Vol 45 (4-5) ◽  
pp. 327-333 ◽  
Author(s):  
S. Tasseel-Ponche ◽  
A.P. Yelnik ◽  
I.V. Bonan
Keyword(s):  
Postural Control ◽  
Hemispheric Stroke ◽  
Motor Strategies

scholarly journals Examination of Weight Transfer Strategies During the Execution of Grand Battement Devant at the Barre, in the Center, and Traveling

2012 ◽  
Vol 27 (2) ◽  
pp. 74-84 ◽  
Author(s):  
Donna Krasnow ◽  
M Virginia Wilmerding ◽  
Shane Stecyk ◽  
Matthew Wyon ◽  
Yiannis Koutedakis
Keyword(s):  
Center Of Mass ◽  
Center Of Gravity ◽  
Main Effect ◽  
Transfer Strategies ◽  
Center Conditions ◽  
Primary Focus ◽  
Dance Educators ◽  
Weight Transfer ◽  
Motor Strategies ◽  
Effect Condition

The purpose of this study was to examine grand battement devant at the barre, in the center, and traveling through space. The primary focus was to consider weight transfer in three conditions: from two feet to one foot for the barre and center conditions, and from one foot to the other foot in traveling. Forty female dancers volunteered (mean age 30.0 ± 13.0 yrs) and were placed in three groups: beginner (n = 12), intermediate (n = 14), and advanced (n = 14). Data were collected with a 7-camera Vicon motion capture system using a Plug-in Gait Full Body Marker set and with two Kistler force plates. Dancers executed five grand battement devant in each of three conditions in randomized order: at the barre in 1st position, in the center in 1st position, and traveling through space. Four variables were investigated: center of gravity of the full trunk, center of gravity of the pelvis, center of gravity of the upper trunk, and center of mass. Data were analyzed in three intervals—stance to battement initiation (STN to GBI), initiation to battement peak (GBI to GBP), and peak to end (GBP to END)—and in the x-axis and y-axis. The main effect condition was significant for all four variables in both x-axis and y-axis (p<0.001). There were no significant differences for training and no significant condition 3 training interactions. Condition was significant for all three intervals (STN to GBI, GBI to GBP, and GBP to END) for all four variables in both axes (p<0.01). Dance educators might consider the importance of allocating sufficient time in dance practice to each of the three conditions—barre, center, and traveling—to ensure development of a variety of motor strategies for weight transfer.

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