scholarly journals Postural regulation of teenagers performing pop dance, according to stabilometry data

2021 ◽  
Vol 11 (3) ◽  
pp. 28-33
Author(s):  
N. G. Konovalova ◽  
A. A. Artem`ev ◽  
R. E. Axmetzyanov
Keyword(s):  
Center Of Pressure ◽  
Healthy People ◽  
Reference Plane ◽  
Pressure Center ◽  
Postural Regulation ◽  
Visual Disturbances ◽  
Better Than ◽  
Sports Selection

Knowledge of postural regulation in different sports is useful for sports selection and for improvement of postural stereotypes.Objective: to reveal postural regulation features of teenagers involved in pop dance.Materials and methods: 15 pop dancers involved in dance more than 10 years performed Romberg and optokinetic tests on computer stabilograph “Trust-M Stabilo”.Results: the area and length of the dancers’ statokinesiogram were less than in general sample, statokinesiogram’s pressure center had been dextrally dislocated. Visual disturbances as well as vision deprivation led to statistically significant increase in speed of center of pressure movement along reference plane and in the ratio of statokinesiogram’s length to its area. All these changes were less pronounced than in the general sample.Conclusions: postural regulation of dancers proved to be better than that of healthy people who were not involved in sports.

scholarly journals Predictors of Coping With Expectation Violation: An Integrative Review

2021 ◽  
pp. 108926802110241
Author(s):  
Martin Pinquart ◽  
Adrian Rothers ◽  
Mario Gollwitzer ◽  
Zahra Khosrowtaj ◽  
Martin Pietzsch ◽  
...  
Keyword(s):  
Empirical Support ◽  
Healthy People ◽  
Personality Characteristics ◽  
Integrative Review ◽  
Present Review ◽  
Relative Impact ◽  
Situational Characteristics ◽  
Potential Impact ◽  
Better Than

The present review investigates factors that predict three processes that lead to persistence versus change of expectations after confrontation with expectation violations, based on the violated expectation (ViolEx) model and related models. We address four groups of predictors: (a) characteristics of the expectation, (b) characteristics of the expectation-violating event(s), (c) broader situational characteristics, and (d) personality characteristics. The bulk of studies conducted in this area looked at expectation change in the direction of the experienced violation (accommodation) as their central dependent variable. The strongest empirical support was found for accommodation being less likely and minimizing of the potential impact of the discrepant information (immunization) being more likely to occur (a) after the reality turns out to be worse rather than better than expected, (b) if disconfirming events are more ambiguous, and (c) if depressed rather than healthy people are confronted with better-than-expected events. Given the high heterogeneity between studies on assessed predictors, we recommend a more comprehensive and unifying approach that tests the relative impact and the interplay of the whole range of predictors across paradigms.

Neuroclusterization method of stabilometric data

2021 ◽  
Author(s):  
I.V. Stepanyan ◽  
S.S. Grokhovsky ◽  
O.V. Kubryak
Keyword(s):  
Center Of Pressure ◽  
Modern Method ◽  
Individual Characteristics ◽  
Automatic Mode ◽  
Support Reaction ◽  
Subsequent Determination ◽  
Euclidean Metrics ◽  
Postural Regulation ◽  
The Individual ◽  
Neural Maps

Stabilometry is a modern method for assessing the functional state of a person by the ability to maintain a stable balance of an upright posture. Technically, the implementation of the stabilometry method consists in measuring, with the help of specialized devices, the values that make up the support reaction, with the subsequent determination, according to these measurements, of the coordinates of the center of body pressure on the support. The nature of the migrations of the center of pressure during the stabilometric study is a source of information about the features of the processes of postural regulation. At the same time, up to the present time, there is a problem of the correct interpretation of the results of stabilometry. The adequacy of the conclusions is largely determined by the human factor, i.e. qualification of a specialist analyzing stabilometry data. Thus, in our opinion, the task of objectifying the assessment of stabilometry results is urgent. The aim of this work is to study the possibility of applying the neurocluster method using self-organizing neural networks to objectify the analysis of stabilometry data. The authors proposed a technique for analyzing the structure of individual and group stabilometric data by clustering them using selforganizing Kohonen neural maps with Euclidean metrics. Neuroclusterization of stabilometric data allows in automatic mode (without human intervention) to identify the type of group of subjects corresponding to the norm or pathology, various types of pathologies, as well as individual biometric characteristics of the subjects. The subsequent analysis of the individual characteristics of the data of the subjects, grouped in this way, makes it possible to detect deviations indicating the presence of abnormalities or the formation of various pathological conditions, which can be useful for the early diagnosis of diseases.

Oral Sildenafil in the Treatment of Erectile Dysfunction

2021 ◽  
pp. 245-250
Author(s):  
Joshua Bodie
Keyword(s):  
Erectile Dysfunction ◽  
Side Effects ◽  
Sexual Activity ◽  
Once Daily ◽  
Higher Doses ◽  
Different Doses ◽  
Visual Disturbances ◽  
Better Than

This chapter summarizes the results of a landmark trial comparing different doses of oral sildenafil versus placebo to treat erectile dysfunction. Patients received either an identical placebo or 25- mg, 50-mg, or 100-mg tablets of sildenafil to be taken approximately one hour before planned sexual activity (but not more than once daily) for 24 weeks. Higher doses of sildenafil resulted in higher mean score for frequency of penetration and maintenance of erection, which were also consistently better than placebo. The most common side effects were headaches, flushing, dyspepsia, rhinitis, and visual disturbances. This study established sildenafil as an effective, reasonably well-tolerated treatment for men with erectile dysfunction of varying etiologies.

scholarly journals Linear and Nonlinear Dynamic Methods towards Investigating Proprioception Impairment in Non-specific Low Back Pain Patients

2020 ◽  
Author(s):  
Seyed Mohammadreza Shokouhyan ◽  
Mehrdad Davoudi ◽  
Maryam Hoviattalab ◽  
Mohsen Abedi ◽  
Soha Bervis ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lyapunov Exponents ◽  
Center Of Pressure ◽  
Cohort Analysis ◽  
Healthy People ◽  
Low Back ◽  
Muscle Area ◽  
Mean Velocity ◽  
Somatosensory Information

Central nervous system (CNS) uses vision, vestibular, and somatosensory information to maintain body stability. Research has shown that there is more lumbar proprioception error among low back pain (LBP) individuals as compared to healthy people. In this study, two groups of 20 healthy people and 20 non-specific low back pain participants (LBP) took part in this investigation. This investigation focused on somatosensory sensors and in order to alter proprioception, a vibrator (frequency of 70Hz, amplitude of 0.5 mm) was placed on the soleus muscle area of each leg and two vibrators were placed bilaterally across the lower back muscles. Individuals, whose vision was occluded, were placed on two surfaces (foam and rigid) on force plate, and trunk angles were recorded simultaneously. Tests were performed in 8 separate trials; the independent variables were vibration (4 levels) and surface (2 levels) for within subjects and 2 groups (healthy and LBP) for between subjects (4×2×2). MANOVA and multi-factor ANOVA tests were done. Linear parameters for center of pressure (COP) (deviation of amplitude, deviation of velocity, phase plane portrait (PPP), and overall mean velocity) and nonlinear parameters for COP and trunk angle ((recurrence quantification analysis) RQA and Lyapunov exponents) were chosen as dependent variables. Results indicated that NSLBP individuals relied more on ankle proprioception for postural stability. Similarly, RQA parameters for the COP on both sides and for the trunk sagittal angle indicated more repeated patterns of movement among the LBP cohort. Analysis of short and long Lyapunov exponents showed that people with LBP caused no use of all joints in their bodies (non-flexible), are less stable than healthy subjects.

scholarly journals Reliability and Repeatability of Pressure Center Analysis with Low-Dye Taping Using Force Platform Podiatry Sensors in Feet with Excessive Pronation

2021 ◽  
Vol 18 (6) ◽  
pp. 3265
Author(s):  
Óscar Madruga-Armada ◽  
Ricardo Becerro-de-Bengoa-Vallejo ◽  
Marta Elena Losa-Iglesias ◽  
Cesar Calvo-Lobo ◽  
David Rodriguez-Sanz ◽  
...  
Keyword(s):  
Observational Study ◽  
Center Of Pressure ◽  
Force Platform ◽  
P Value ◽  
Pressure Center ◽  
Anova Test ◽  
Foot Pronation ◽  
Foot Function ◽  
First Session

Background: The analysis of the center of pressure (COP) is a method used to assess the foot function, but its reliability and repeatability have not been evaluated. COP can be altered by diverse conditions, like an excessive foot pronation. Low-Dye taping is commonly used for the treatment of symptoms related to an excessive pronation. To date, no study has evaluated the effects of the Low-Dye taping on COP and the duration of its effects. Thus, the main purpose of this manuscript was to assess the reliability and repeatability of the percentage of center of pressure locus area (%CLA) in feet with an excessive pronation, and secondarily, to assess that the Low-Dye taping modifies the %CLA during the immediate 48 h. Methods: An observational study of the reliability and repeatability of the %CLA variable with the Low-Dye taping in feet with excessive pronation was carried out. We used the EPS-Platform to evaluate the results of the variable in 6 conditions in a first session to evaluate the reliability of the results. We compared the results of the first session with the results in a second session to evaluate the repeatability of the results. We also carried out an ANOVA test to evaluate the changes that the taping produced in the variable between without taping with the rest of the 6 conditions. Results: For the %CLA, we observed a reliability greater than 0.80, measured by the interclass ratio index, both in the first session before taping, and in the second session before taping, thus being a repeatability variable. In the following times, with taping, at 10 min with tape, at 20 min with tape, at 24 h with tape and at 48 h with tape; an interclass ratio coefficient (ICC) higher than 0.80 was again obtained, thus being a reliable variable in all measurements made. The Low-Dye taping did not change %CLA from the time the tape was put in until 48 h (p-value = 1.000). Conclusions: The %CLA variable, in feet with excessive pronation, proved to be a reliable variable in all the measurements obtained before putting on the tape and during the following 48 h with the tape, and a repeatable variable. The Low-Dye taping did not change the %CLA from the time the tape was put in until 48 h.

The center of pressure—Center of mass vector as a parameter to characterize gait initiation impairments

2014 ◽  
Vol 40 ◽  
pp. S10-S11 ◽  
Author(s):  
I.U. Isaias ◽  
M. Dipaola ◽  
A. Marzegan ◽  
C.A. Frigo
Keyword(s):  
Center Of Pressure ◽  
Center Of Mass ◽  
Gait Initiation ◽  
Pressure Center

scholarly journals Differences in static postural control between top level male volleyball players and non-athletes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Dorota Borzucka ◽  
Krzysztof Kręcisz ◽  
Zbigniew Rektor ◽  
Michał Kuczyński
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Force Plate ◽  
High Capacity ◽  
Optimal Timing ◽  
Motor Tasks ◽  
Physically Active ◽  
Sport Practice ◽  
Balance Ability ◽  
Postural Regulation

Abstract It is argued that elite athletes often demonstrate superior body balance. Despite the apparent significance of perfect balance ability in volleyball, little is known about the specific nature of postural control adjustments among first-rate volleyball competitors. This study compared postural performance and strategies in quiet stance between world vice-champions and young, healthy, physically active male subjects. The center-of-pressure (COP) signals recorded on a force plate were used to compute several measures of sway. In both axes of movement, athletes had lower COP range, but not its standard deviation and higher COP speed and frequency than controls. These findings indicate that postural regulation in athletes was more precise and less vulnerable to external disturbances which support optimal timing and precision of actions. Postural strategies in athletes standing quietly were similar to those exhibited by non-athletes performing dual tasks. It demonstrates a significant effect of sport practice on changes in postural control. In anterior–posterior axis, athletes displayed a much higher COP fractal dimension and surprisingly lower COP–COG frequency than controls. This accounts for their high capacity to use diversified postural strategies to maintain postural stability and significantly reduced the contribution of proprioception to save this function for carrying out more challenging posture-motor tasks.

scholarly journals A study to compare outcomes of Sodium tetra-decyl sulphate and Polidocanol in the treatment of varicosities due to incompetent tributaries of superficial vein of leg: a randomized controlled trial

2018 ◽  
Vol 5 (11) ◽  
pp. 3515
Author(s):  
Jitendra K. Kushwaha ◽  
Akshay Anand ◽  
Abhinav A. Sonkar ◽  
Rajni Gupta
Keyword(s):  
Skin Necrosis ◽  
Controlled Trial ◽  
Superficial Vein ◽  
Foam Sclerotherapy ◽  
Group A ◽  
Cosmetic Outcomes ◽  
Group B ◽  
Visual Disturbances ◽  
Better Than

Background: Various options for treatment of varicosities of tributaries are mini-phlebectomy, hook phlebectomy, Trivex and sclerotherapy. Sodium tetra-decyl sulphate (STD) and polidocanol (POL) are most commonly used sclerosants. Adverse events caused by sclerosants are pain, thrombophlebitis, hyperpigmentation, allergy, anaphylactic shock, cutaneous necrosis, deep venous thrombosis, headache, visual disturbances and chest tightness. Foam sclerotherapy has been considered to be better than liquid sclerosant. In this study we have compared foam prepared by STD versus POL in the treatment of varicosities of tributaries of superficial vein of Leg.Methods: Patients treated for SFJ or SPJ incompetency post their primary admission and management were attended and evaluated in outpatient department. Patients having varicosities were enrolled for study and treated in OPD by foam sclerotherapy. Patients were randomized to two groups - A or B. Patients were followed up for one month and various clinical outcomes were analyzed.Results: In group A (STD) out of n=20 patients pain, hyperpigmentation and skin necrosis was present in n1=18 patients, n2=14 patients and in n3=2 patients respectively on the first post-operative day while in group B (POL) out of 24 patients it was present in n1=14, n2=8 and n3=1 patient respectively. Post sclerotherapy at one month follow up, in Group A pain and hyperpigmentation decreased to n1=08 and n2=04 patients respectively but skin necrosis was persisting in all n3=02 patients. In-group B pain and hyperpigmentation was present in patients each n1= n2=02 and skin necrosis was present in n3=01 patient.Conclusions: Polidocanol is better than Sodium tetra-decyl sulphate for foam sclerotherapy in terms of better cosmetic outcomes. 

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