scholarly journals Biped without Feet in Single Support: Stabilization of the Vertical Posture with Internal Torques

10.5772/4683 ◽  
2006 ◽  
Author(s):  
Formalsky Alexander ◽  
Aoustin Yannick
Keyword(s):  
Vertical Posture

scholarly journals Is Lateropulsion Really Related with a Specific Lesion of the Brain?

2021 ◽  
Vol 11 (3) ◽  
pp. 354
Author(s):  
Kyoung Lee ◽  
Sang Yoo ◽  
Eun Ji ◽  
Woo Hwang ◽  
Yeun Yoo ◽  
...  
Keyword(s):  
Right Hemisphere ◽  
Parietal Lobe ◽  
Inferior Frontal Gyrus ◽  
Brain Lesions ◽  
Vertical Posture ◽  
Lesion Volume ◽  
Precentral Gyrus ◽  
Stroke Patients ◽  
The Right ◽  
Right Hemisphere Stroke

Lateropulsion (pusher syndrome) is an important barrier to standing and gait after stroke. Although several studies have attempted to elucidate the relationship between brain lesions and lateropulsion, the effects of specific brain lesions on the development of lateropulsion remain unclear. Thus, the present study investigated the effects of stroke lesion location and size on lateropulsion in right hemisphere stroke patients. The present retrospective cross-sectional observational study assessed 50 right hemisphere stroke patients. Lateropulsion was diagnosed and evaluated using the Scale for Contraversive Pushing (SCP). Voxel-based lesion symptom mapping (VLSM) analysis with 3T-MRI was used to identify the culprit lesion for SCP. We also performed VLSM controlling for lesion volume as a nuisance covariate, in a multivariate model that also controlled for other factors contributing to pusher behavior. VLSM, combined with statistical non-parametric mapping (SnPM), identified the specific region with SCP. Lesion size was associated with lateropulsion. The precentral gyrus, postcentral gyrus, inferior frontal gyrus, insula and subgyral parietal lobe of the right hemisphere seemed to be associated with the lateropulsion; however, after adjusting for lesion volume as a nuisance covariate, no lesion areas were associated with the SCP scores. The size of the right hemisphere lesion was the only factor most strongly associated with lateropulsion in patients with stroke. These results may be useful for planning rehabilitation strategies of restoring vertical posture and understanding the pathophysiology of lateropulsion in stroke patients.

Bidirectional Human-Robot Bimanual Handover of Big Planar Object With Vertical Posture

2021 ◽  
pp. 1-12
Author(s):  
Wei He ◽  
Jiashu Li ◽  
Zichen Yan ◽  
Fei Chen
Keyword(s):  
Vertical Posture

Role of point of application of perturbation in control of vertical posture

2017 ◽  
Vol 235 (11) ◽  
pp. 3449-3457 ◽  
Author(s):  
Bing Chen ◽  
Yun-Ju Lee ◽  
Alexander S. Aruin
Keyword(s):  
Vertical Posture

The Effect of Body Position and Number of Supports on Wall Reaction Forces in Rock Climbing

1997 ◽  
Vol 13 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Franck Quaine ◽  
Luc Martin ◽  
Jean-Pierre Blanchi
Keyword(s):  
Body Weight ◽  
Contact Force ◽  
Body Position ◽  
Three Dimensional ◽  
Rock Climbing ◽  
Contact Forces ◽  
Vertical Posture ◽  
Reaction Forces ◽  
Force Data ◽  
Lower Contact

This manuscript describes three-dimensional force data collected during postural shifts performed by individuals simulating rock-climbing skills. Starting from a quadrupedal vertical posture, 6 expert climbers had to release their right-hand holds and maintain the tripedal posture for a few seconds. The vertical and contact forces (lateral and anteroposterior forces) applied on the holds were analyzed in two positions: an “imposed” position (the trunk far from the supporting wall) and an “optimized” position (the trunk close to the wall and lower contact forces at the holds). The tripedal postures performed in the two positions were achieved by the same pattern of vertical and contact forces exerted by the limbs on the holds. In the optimized position, the transfer of the forces was less extensive than in the imposed position, so that the forces were exerted primarily on the ipsilateral hold. Moreover, a link between the contact force values and the couple due to body weight with respect to the feet was shown.

scholarly journals Objectification of motor disorders in children with cerebral palsy: what we know so far

2018 ◽  
Vol 6 (1) ◽  
pp. 67-77 ◽  
Author(s):  
Vladimir V. Borzikov ◽  
Natalia N. Rukina ◽  
Alexei N. Kuznetsov ◽  
Anna N. Belova
Keyword(s):  
Cerebral Palsy ◽  
Video Analysis ◽  
Objective Assessment ◽  
Vertical Posture ◽  
Motor Disorders ◽  
Locomotor System ◽  
Hand Motion ◽  
Biomechanical Assessment ◽  
Children With Cerebral Palsy ◽  
The Stability

This study provides an overview of the recent literature regarding the assessment methods of the functional state of the locomotor system in children with cerebral palsy. The objective methods of quantitative assessment of motor disorders in cerebral palsy are presented, including the measurement of stability, biomechanical assessment of walking, and video analysis of movements. The influence of the cognitive load on the ability to maintain the vertical posture in children with cerebral palsy as well as the changes in the stability of the vertical posture with closed eyes were observed. Changes in the walking parameters with an increase in the speed were also recorded in children with cerebral palsy. Methods that assess hand motion in children with cerebral palsy include tests involving the moving of objects, tests for speed assessment in joint movements, and video analysis of motions. The methods and tests for such an evaluation require to be valid and reliable, allowing an objective assessment of the severity of motor disorders in cerebral palsy.

scholarly journals Synergic control of action in levodopa-naïve Parkinson’s disease patients: II. Multi-muscle synergies stabilizing vertical posture

2020 ◽  
Vol 238 (12) ◽  
pp. 2931-2945
Author(s):  
Sandra M. S. F. Freitas ◽  
Paulo B. de Freitas ◽  
Ali Falaki ◽  
Tyler Corson ◽  
Mechelle M. Lewis ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Vertical Posture ◽  
Muscle Synergies

Vertical Posture Maintenance with Multiple Repetitions under the Conditions of Destabilizing Virtual Visual Environment

2019 ◽  
Vol 45 (5) ◽  
pp. 515-522
Author(s):  
G. V. Kozhina ◽  
Y. S. Levik ◽  
A. K. Popov ◽  
B. N. Smetanin
Keyword(s):  
Visual Environment ◽  
Vertical Posture ◽  
Posture Maintenance ◽  
Virtual Visual Environment

Relationship between the time of the beginning of the anticipatory postural components and the latent period of raising the arm in the vertical posture

2008 ◽  
Vol 34 (4) ◽  
pp. 468-476
Author(s):  
M. I. Lipshits ◽  
O. V. Kazennikov
Keyword(s):  
Latent Period ◽  
Vertical Posture
Sign in / Sign up

Export Citation Format

Share Document