scholarly journals Postural control in high-level kata and kumite karatekas

2017 ◽  
pp. 21-26 ◽  
Author(s):  
Gérome C. Gauchard ◽  
Alexis Lion ◽  
Loïc Bento ◽  
Philippe P. Perrin ◽  
Hadrien Ceyte
Keyword(s):  
Visual Cues ◽  
Balance Control ◽  
Body Sway ◽  
Quiet Stance ◽  
Eyes Closed ◽  
Reduced Body ◽  
Eyes Open ◽  
Tactile Cues ◽  
High Level ◽  
Cue Availability

Postural performance may vary according to the constraints related to the practice of different martial arts. This study aimed to investigate the visual and tactile contribution in balance control: (i) between karatekas and sedentary controls; (ii) between kata and kumite specialists within the elite karatekas. Balance control in quiet stance of 23 high-level karatekas (11 kata and 12 kumite specialists) and of 24 sedentary controls was evaluated in four sensory context conditions, a combination of visual cue availability (eyes open or closed) and tactile support reliability (firm or foam surface). The results showed that karatekas had a reduced body sway and a smaller sway area compared to controls, especially in the more challenging condition, i.e. eyes closed on a foam surface. Moreover, kata karatekas tended to have a reduced body sway and a smaller sway area than kumite karatekas in all sensory conditions. The practice of karate may enhance balance control in quiet stance by optimizing the role of tactile cues and by decreasing the weighting of visual cues. Moreover, the specialization into different karateka practices may induce the implementation of specific postural strategies to solve a given balance problem.

scholarly journals Age-Related Changes in Human Posture Control: Sensory Organization Tests

1990 ◽  
Vol 1 (1) ◽  
pp. 73-85 ◽  
Author(s):  
R.J. Peterka ◽  
F.O. Black
Keyword(s):  
Visual Cues ◽  
Human Subjects ◽  
Body Sway ◽  
Support Surface ◽  
Eyes Closed ◽  
Sensory Organization ◽  
Age Related ◽  
Eyes Open ◽  
Orientation Cues ◽  
Anterior Posterior

Postural control was measured in 214 human subjects ranging in age from 7 to 81 y. Sensory organization tests measured the magnitude of anterior-posterior body sway during six 21 s trials in which visual and somatosensory orientation cues were normal, altered (by rotating the visual surround and support surface in proportion to the subject’s sway), or vision eliminated (eyes closed). No age-related increase in postoral sway was found for subjects standing on a fixed support surface with eyes open or closed. However, age-related increases in sway were found for conditions involving altered visual or somatosensory cues. Subjects older tban about 55 y showed the largest sway increases. Subjects younger than about 15 y were also sensitive to alteration of sensory cues. On average, the older subjects were more affected by altered visual cues, whereas younger subjects had more difficulty with altered somatosensory cues.

Investigating Center-of-Pressure Based Parameters to Quantify Athlete and Non-Athlete Balance

2016 ◽  
Author(s):  
Lara A. Thompson ◽  
Mehdi Badache
Keyword(s):  
Time Series ◽  
Visual Cues ◽  
Center Of Pressure ◽  
Standing Balance ◽  
Body Sway ◽  
Foot Placement ◽  
Eyes Closed ◽  
Position Time Series ◽  
Eyes Open ◽  
Base Of Support

Through ground reaction (foot) forceplate-based, center-of-pressure (COP) parameters, we aimed to investigate differences in standing balance for young, healthy individuals from both athlete (soccer) and non-athlete subject populations. We investigated five, COP displacement and velocity parameters derived from the COP position time series. Soccer athlete and non-athlete subjects performed standing balance for postural tasks of increasing difficulty levels, by varying visual cues (eyes-open/eyes-closed) and base of support (wide/tandem foot placement), leading to four test conditions: 1) wide/eyes-open, 2) wide/eyes-closed, 3) tandem/eyes-open, 4) tandem/eyes-closed. By investigating position and velocity characteristics of the COP position time series, we observed that the soccer athletes had generally lower COP displacement and velocity parameters (meaning they were more stable and perhaps better able to control their body sway) than the non-athletes. This study lends new insights as to how parameters derived from the COP position can be utilized to determine differences in balance between normal subject populations (e.g., athletes versus non-athletes).

scholarly journals Ankylosing Spondylitis and Posture Control: The Role of Visual Input

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Alessandro Marco De Nunzio ◽  
Salvatore Iervolino ◽  
Carmela Zincarelli ◽  
Luisa Di Gioia ◽  
Giuseppe Rengo ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Balance Control ◽  
Amplitude Spectrum ◽  
Mean Amplitude ◽  
Visual Input ◽  
Quiet Stance ◽  
Eyes Closed ◽  
Increased Risk ◽  
Eyes Open ◽  
The Mean

Objectives. To assess the motor control during quiet stance in patients with established ankylosing spondylitis (AS) and to evaluate the effect of visual input on the maintenance of a quiet posture.Methods. 12 male AS patients (mean age 50.1 ± 13.2 years) and 12 matched healthy subjects performed 2 sessions of 3 trials in quiet stance, with eyes open (EO) and with eyes closed (EC) on a baropodometric platform. The oscillation of the centre of feet pressure (CoP) was acquired. Indices of stability and balance control were assessed by the sway path (SP) of the CoP, the frequency bandwidth (FB1) that includes the 80% of the area under the amplitude spectrum, the mean amplitude of the peaks (MP) of the sway density curve (SDC), and the mean distance (MD) between 2 peaks of the SDC.Results. In severe AS patients, the MD between two peaks of the SDC and the SP of the center of feet pressure were significantly higher than controls during both EO and EC conditions. The MP was significantly reduced just on EC.Conclusions. Ankylosing spondylitis exerts negative effect on postural stability, not compensable by visual inputs. Our findings may be useful in the rehabilitative management of the increased risk of falling in AS.

scholarly journals Effects of Visual Cues on the Standing Body Sway of Males and Females

1972 ◽  
Vol 34 (3) ◽  
pp. 951-959 ◽  
Author(s):  
Seymour Weissman ◽  
Ernest Dzendolet
Keyword(s):  
Visual System ◽  
Visual Cues ◽  
Latin Square ◽  
Standing Position ◽  
Body Sway ◽  
Eyes Closed ◽  
Power Spectral ◽  
Eyes Open ◽  
Density Analysis ◽  
Power Spectral Density Analysis

6 male and 6 female Ss, in a standing position, were exposed for 4 min. to the following conditions: eyes closed, vertical luminous red, horizontal luminous rod, diagonal right luminous rod, eyes closed—body lean left, and eyes open with view of experimental room. Each student was tested in a single session, with the six conditions presented according to their position in a Latin square design. Power spectral density analysis of body sway showed little influence of the visual system in the maintenance of static equilibrium. Possible effects of the visual system in more active or stressful body conditions were discussed.

scholarly journals Wearing compression garments differently affects monopodal postural balance in high-level athletes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Kévin Baige ◽  
Frédéric Noé ◽  
Thierry Paillard
Keyword(s):  
Balance Control ◽  
Group Analysis ◽  
Force Plate ◽  
Hierarchical Cluster ◽  
Foot Pressure ◽  
Mean Velocity ◽  
Compression Garments ◽  
Eyes Closed ◽  
Eyes Open ◽  
High Level

Abstract This study investigated the acute effects of compression garments (CG) on balance control in elite athletes. 15 male professional handball players were recruited. They had to stand as motionless as possible in a monopedal stance on a force plate with the eyes closed and on a wobble board with the eyes open, while wearing CG or not. Centre of foot pressure mean velocity and surface area were calculated. Statistics were first calculated with the data from the whole sample. A hierarchical cluster analysis was also performed in order to categorize the participants’ behaviours into subgroups with similar characteristics. The whole group analysis showed that there were no significant effects attributed to CG. The clustering analysis identified two distinct and homogeneous subgroups of participants. Only athletes with the best balance abilities at baseline could benefit from CG wearing to improve their balance control. These athletes, who swayed less and were more sensitive to somatosensory manipulation due to CG wearing, seem to control balance by adopting a support-dependent preferred sensorimotor tactic. Our findings suggest that amongst high-level athletes, the ability to benefit from CG wearing to improve balance control seems to depend on participants’ intrinsic balance skills and/or preferred sensorimotor tactics.

scholarly journals Gender Differences in Postural Stability among 13-Year-Old Alpine Skiers

2020 ◽  
Vol 17 (11) ◽  
pp. 3859 ◽  
Author(s):  
Agnieszka D. Jastrzębska
Keyword(s):  
Gender Differences ◽  
Postural Balance ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Body Sway ◽  
Foot Pressure ◽  
Eyes Closed ◽  
Before And After ◽  
Eyes Open ◽  
Alpine Skiers

This experiment examined changes in body sway after Wingate test (WAnT) in 19 adolescents practicing alpine skiing, subjected to the same type of training load for 4–5 years (10 girls and nine boys). The postural examinations were performed with eyes open (EO), eyes closed (EC), and sway reverenced vision (SRV) in the medial-lateral (ML) and anterior-posterior (AP) planes. The displacement of center of foot pressure (CoP), range of sway (RS), mean sway velocity (MV), way length, and surface area were measured in bipedal upright stance before and after the WAnT to assess the influence of fatigue on postural balance. There were no significant differences in WAnT parameters between girls and boys. Relative peak power (RPP), relative total work (RWtot) were (girls vs. boys) 8.89 ± 0.70 vs. 9.57 ± 1.22 W/kg, p < 0.05 and 227.91 ± 14.98 vs. 243.22 ± 30.24 W/kg, p < 0.05 respectively. The fatigue index (FI) was also on similar level in both genders; however, blood lactate concentration (BLa) was significantly higher in boys (10.35 ± 1.16 mM) than in girls (8.67 ± 1.35 mM) p = 0.007. In the EO examination, statistically significant differences between resting and fatigue conditions in the whole group and after the division into girls and boys were found. In fatigue conditions, significant gender differences were noted for measurements in the ML plane (sway path and RS) and RS in the AP plane. Comparison of the three conditions shows differences between EO vs. EC and SRV in AP plane measured parameters, and for RS in ML plane in rest condition in girls. The strong correlations between FI and CoP parameters mainly in ML plane in the whole group for all examination conditions were noted. By genders, mainly RS in ML plane strongly correlates with FI (r > 0.7). No correlation was found between BLa and CoP parameters (p > 0.06). The presented results indicate that subjecting adolescents of both genders to the same training may reduce gender differences in the postural balance ability at rest but not in fatigue conditions and that girls are significantly superior in postural balance in the ML plane than boys. It was also shown that too little or too much information may be destructive to postural balance in young adolescents.

Effects of hypothermic anesthesia of the feet on vibration-induced body sway and adaptation

2003 ◽  
Vol 13 (1) ◽  
pp. 39-52 ◽  
Author(s):  
F. Stål ◽  
P.A. Fransson ◽  
M. Magnusson ◽  
M. Karlberg
Keyword(s):  
Postural Control ◽  
Sensory Loss ◽  
Body Sway ◽  
Cutaneous Mechanoreceptors ◽  
Supporting Surface ◽  
Eyes Closed ◽  
Somatosensory Input ◽  
Eyes Open ◽  
Sensor Information ◽  
Ice Water

The aim of this study was to investigate the significance of information from the plantar cutaneous mechanoreceptors in postural control and whether postural control could compensate for reduced cutaneous information by adaptation. Sixteen healthy subjects were tested with eyes open or eyes closed with hypothermic and normal feet temperature during posturography where body sway was induced by vibratory proprioceptive stimulation towards both calf muscles. The hypothermic anesthesia was obtained by cooling the subject's feet in ice water for 20 minutes. Body movements were evaluated by analyzing the anteroposterior and lateral torques induced towards the supporting surface by a force platform during the posturography tests. The reduction of cutaneous sensor information from the mechanoreceptors of the feet significantly increased the vibration-induced torque variance mainly in the anteroposterior direction. However, the effects of disturbed mechanoreceptors information was rapidly compensated for through postural adaptation and torque variance was in level with that without anesthesia within 50 to 100 seconds of stimulation, both when standing with eyes open and eyes closed. Our findings suggest that somatosensory input from mechanoreceptors in the foot soles contribute significantly in maintaining postural control, but the sensory loss could be compensated for.

scholarly journals The influence of an aquatic exercise program on balance in patients with ankylosing spondylitis

2021 ◽  
Vol 31 (Supplement_2) ◽  
Author(s):  
Margarida Ferreira ◽  
Cristina Mesquita ◽  
Paula Santos ◽  
João Borges ◽  
Maria Graça ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Center Of Pressure ◽  
Exercise Program ◽  
Wilcoxon Test ◽  
Aquatic Exercise ◽  
Body Sway ◽  
Mean Velocity ◽  
Assessment Protocol ◽  
Eyes Closed ◽  
Eyes Open

Abstract Background Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease that leads to a limitation of mobility, which can cause postural deficits and progressive loss of balance. Aquatic exercise improves this health condition. The objetive is to verify the influence of an aquatic exercise program, on balance and functionality, in individuals with AS. Methods Pre-experimental study carried out on 6 individuals with AS. All individuals were assessed at baseline (M0) and 12 weeks after the intervention (M1) using the Bath indices (BASMI, BASFI and BASDAI) and the balance assessment protocol (‘Body Sway’) by the Physiosensing Platform. Data were analyzed using the Statistical Program Statistical Package for the Social Sciences (SPSS), version 26. Were used descriptive statistics and Wilcoxon test to compare M0 and M1. The significance value was 0.05. Results We verify improvements in BASMI (P = 0.046), BASFI (P = 0.042) and BASDAI (P = 0.027) scores. Through the analysis of the center of pressure variables, there were no statistically significant differences, between moments, in the protocol. However, when assessing balance, in the anteroposterior mean distance in both the protocol (eyes open) and in the protocol (eyes closed), in the root mean square in both protocols and in mediolateral mean velocity, only in the protocol (eyes open), there was a slight decrease in the median value. Conclusions The present study suggests that the specific aquatic exercise program, may influence balance and improve functionality in a population with AS. Therefore, the Bath indices translate improvements in the symptoms and functionalities of these participants.

scholarly journals Walking with eyes closed is easier than walking with eyes open without visual cues: The Romberg task versus the goggle task

2015 ◽  
Vol 58 (6) ◽  
pp. 332-335 ◽  
Author(s):  
A.P. Yelnik ◽  
S. Tasseel Ponche ◽  
C. Andriantsifanetra ◽  
C. Provost ◽  
A. Calvalido ◽  
...  
Keyword(s):  
Visual Cues ◽  
Eyes Closed ◽  
Eyes Open

scholarly journals Static Balance in Patients with Vestibular Impairments: A Preliminary Study

Scientifica ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Hossein Talebi ◽  
Mohammad Taghi Karimi ◽  
Seyed Hamid Reza Abtahi ◽  
Niloofar Fereshtenejad
Keyword(s):  
Path Length ◽  
Center Of Pressure ◽  
Balance Control ◽  
Force Plate ◽  
Static Balance ◽  
Eyes Closed ◽  
Significant Difference ◽  
Eyes Open ◽  
Age Limits ◽  
The Difference

Aims. Vestibular system is indicated as one of the most important sensors responsible for static and dynamic postural control. In this study, we evaluated static balance in patients with unilateral vestibular impairments.Materials and Methods. We compared static balance control using Kistler force plate platform between 10 patients with unilateral vestibular impairments and 20 normal counterparts in the same sex ratio and age limits (50±7). We evaluated excursion and velocity of center of pressure (COP) and path length in anteroposterior (AP) and mediolateral (ML) planes with eyes open and with eyes closed.Results. There was no significant difference between COP excursions in ML and AP planes between both groups with eyes open and eyes closed (pvalue > 0.05). In contrast, the difference between velocity and path length of COP in the mentioned planes was significant between both groups with eyes open and eyes closed (pvalue < 0.05).Conclusions. The present study showed the static instability and balance of patients with vestibular impairments indicated by the abnormal characteristics of body balance.

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