scholarly journals Inicialização da marcha nos três primeiros anos do andar independente: um estudo descritivo do comportamento do centro de pressão/ Gait initiation in the first three years of the independent walking: a descriptive study of the behavior of the center of pressure

2021 ◽  
Vol 7 (10) ◽  
pp. 100086-100099
Author(s):  
Fernanda Grazielle da Silva Azevedo Nora ◽  
Thamara Cardoso Jacob ◽  
Franciele Silva de Paiva
Keyword(s):  
Center Of Pressure ◽  
Descriptive Study ◽  
Gait Initiation

scholarly journals Effects of additional load at different heights on gait initiation: A statistical parametric mapping of center of pressure and center of mass behavior

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0242892
Author(s):  
Marcus Fraga Vieira ◽  
Fábio Barbosa Rodrigues ◽  
Alfredo de Oliveira Assis ◽  
Eduardo de Mendonça Mesquita ◽  
Thiago Santana Lemes ◽  
...  
Keyword(s):  
Time Series ◽  
Center Of Pressure ◽  
Center Of Mass ◽  
Statistical Parametric Mapping ◽  
Gait Initiation ◽  
Experimental Conditions ◽  
Distributed Load ◽  
Uniformly Distributed Load ◽  
Reaction Forces ◽  
Controlled Object

The purpose of this study was to investigate the effects of different vertical positions of an asymmetrical load on the anticipatory postural adjustments phase of gait initiation. Sixty-eight college students (32 males, 36 females; age: 23.65 ± 3.21 years old; weight: 69.98 ± 8.15 kg; height: 1.74 ± 0.08 m) were enrolled in the study. Ground reaction forces and moments were collected using two force platforms. The participants completed three trials under each of the following random conditions: no-load (NL), waist uniformly distributed load (WUD), shoulder uniformly distributed load (SUD), waist stance foot load (WST), shoulder stance foot load (SST), waist swing foot load (WSW), and shoulder swing foot load (SSW). The paired Hotelling’s T-square test was used to compare the experimental conditions. The center of pressure (COP) time series were significantly different for the SUD vs. NL, SST vs. NL, WST vs. NL, and WSW vs. NL comparisons. Significant differences in COP time series were observed for all comparisons between waist vs. shoulder conditions. Overall, these differences were greater when the load was positioned at the shoulders. For the center of mass (COM) time series, significant differences were found for the WUD vs. NL and WSW vs. NL conditions. However, no differences were observed with the load positioned at the shoulders. In conclusion, only asymmetrical loading at the waist produced significant differences, and the higher the extra load, the greater the effects on COP behavior. By contrast, only minor changes were observed in COM behavior, suggesting that the changes in COP (the controller) behavior are adjustments to maintain the COM (controlled object) unaltered.

Emotional State Impacts Center of Pressure Displacement Before Forward Gait Initiation

2015 ◽  
Vol 31 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Bradley Fawver ◽  
Garrett F. Beatty ◽  
Kelly M. Naugle ◽  
Chris J. Hass ◽  
Christopher M. Janelle
Keyword(s):  
Center Of Pressure ◽  
Emotional Reactions ◽  
Quiet Standing ◽  
Whole Body ◽  
Gait Initiation ◽  
Emotional States ◽  
Body Movements ◽  
Planning Period ◽  
Postural Changes ◽  
The Impact

Emotional states influence whole-body movements during quiet standing, gait initiation, and steady state gait. A notable gap exists, however, in understanding how emotions affect postural changes during the period preceding the execution of planned whole-body movements. The impact of emotion-induced postural reactions on forthcoming posturomotor movements remains unknown. We sought to determine the influence of emotional reactions on center of pressure (COP) displacement before the initiation of forward gait. Participants (N = 23, 14 females) stood on a force plate and initiated forward gait at the offset of an emotional image (representing five discrete categories: attack, sad faces, erotica, happy faces, and neutral objects). COP displacement in the anteroposterior direction was quantified for a 2 second period during image presentation. Following picture onset, participants produced a posterior postural response to all image types. The greatest posterior displacement was occasioned in response to attack or threat stimuli compared with happy faces and erotica images. Results suggest the impact of emotional states on gait behavior begins during the motor planning period before the preparatory phase of gait initiation, and manifests in center of pressure displacement alterations.

The influence of the aquatic environment on the center of pressure, impulses and upper and lower trunk accelerations during gait initiation

2017 ◽  
Vol 58 ◽  
pp. 469-475 ◽  
Author(s):  
Andresa R. Marinho-Buzelli ◽  
Kei Masani ◽  
Hossein Rouhani ◽  
Ana M. Barela ◽  
Gustavo T.B. Fernandes ◽  
...  
Keyword(s):  
Aquatic Environment ◽  
Center Of Pressure ◽  
Gait Initiation ◽  
Lower Trunk

Alterations in Gait Initiation Are Present in Those With Posttraumatic Ankle Osteoarthritis: A Pilot Study

2013 ◽  
Vol 29 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Erik A. Wikstrom ◽  
Robert B. Anderson
Keyword(s):  
Motor Control ◽  
Pilot Study ◽  
Postural Control ◽  
Center Of Pressure ◽  
Gait Initiation ◽  
Static Balance ◽  
Control Mechanisms ◽  
Ankle Osteoarthritis ◽  
Sf 36 ◽  
Balance Trials

The purpose of this investigation was to determine if stereotypical patterns of gait initiation are altered in those with posttraumatic ankle osteoarthritis. Ten subjects, five with unilateral ankle osteoarthritis and five uninjured controls, participated. Subjects completed the SF-36 and Ankle Osteoarthritis Scale to quantify self-reported disability as well as 10 dual-limb static stance trials and 10 gait initiation trials with each leg. Center of pressure outcomes were calculated for static balance trials while the peak center of pressure excursions were calculated for each phase of gait initiation. The results indicate greater self-reported disability (P< .05) and worse static postural control (P< .05) in the ankle osteoarthritis group. Nonstereotypical patterns were also observed during the first and third phases of gait initiation in those with ankle osteoarthritis. The results of this pilot study suggest that supraspinal motor control mechanisms may have changed in those with posttraumatic ankle osteoarthritis.

scholarly journals Comparison of Center of Pressure and Center of Mass of Gait Initiation between Children with Typical Development and Children with Diplegia

2011 ◽  
Vol 23 (3) ◽  
pp. 469-475 ◽  
Author(s):  
Soontharee Taweetanalarp ◽  
Saipin Prasertsukdee ◽  
Roongtiwa Vachalathiti ◽  
Jaranit Kaewkungwal
Keyword(s):  
Center Of Pressure ◽  
Center Of Mass ◽  
Gait Initiation ◽  
Typical Development

Center of pressure excursion and muscle activation during gait initiation in individuals with and without chronic ankle instability

2020 ◽  
Vol 108 ◽  
pp. 109904
Author(s):  
Mohammad Yousefi ◽  
Heydar Sadeghi ◽  
Saeed Ilbiegi ◽  
Zahra Ebrahimabadi ◽  
Maryam Kakavand ◽  
...  
Keyword(s):  
Muscle Activation ◽  
Center Of Pressure ◽  
Ankle Instability ◽  
Chronic Ankle Instability ◽  
Gait Initiation

scholarly journals Asymmetry of Anticipatory Postural Adjustment During Gait Initiation

2014 ◽  
Vol 42 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Koichi Hiraoka ◽  
Ryota Hatanaka ◽  
Yasutaka Nikaido ◽  
Yasutomo Jono ◽  
Yoshifumi Nomura ◽  
...  
Keyword(s):  
Center Of Pressure ◽  
Lateral Displacement ◽  
Swing Phase ◽  
Gait Initiation ◽  
Postural Adjustment ◽  
Anticipatory Postural Adjustment ◽  
Dependent Variables ◽  
Weight Shift ◽  
The Asymmetry ◽  
The Right

Abstract The purpose of this study was to investigate the asymmetry of anticipatory postural adjustment (APA) during gait initiation and to determine whether the process of choosing the initial swing leg affects APA during gait initiation. The participants initiated gait with the leg indicated by a start tone or initiated gait with the leg spontaneously chosen. The dependent variables of APA were not significantly different among the condition of initiating gait with the preferred leg indicated by the start tone, the condition of initiating gait with the non-preferred leg indicated by the start tone, and the condition of initiating gait with the leg spontaneously chosen. These findings fail to support the view that the process of choosing the initial swing leg affects APA during gait initiation. The lateral displacement of the center of pressure in the period in which shifting the center of pressure to the initial swing phase before initiating gait with the left leg indicated by the external cue was significantly larger than that when initiating gait with the right leg indicated by the external cue, and significantly larger than that when initiating gait with the leg spontaneously chosen. Weight shift to the initial swing side during APA during gait initiation was found to be asymmetrical when choosing the leg in response to an external cue

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