Postural Control Disorders Research Articles

How Does Postural Control in Patients with Functional Motor Disorders Adapt to Multitasking-Based Immersive Virtual Reality?

Motor symptoms in functional motor disorders (FMDs) refer to involuntary, but learned, altered movement patterns associated with aberrant self-focus, sense of agency, and belief/expectations. These conditions commonly lead to impaired posture control, raising the likelihood of falls and disability. Utilizing visual and cognitive tasks to manipulate attentional focus, virtual reality (VR) integrated with posturography is a promising tool for exploring postural control disorders. To investigate whether postural control can be adapted by manipulating attentional focus in a 3D immersive VR environment. We compared postural parameters in 17 FMDs patients and 19 age-matched healthy controls over a single session under four increasingly more complex and attention-demanding conditions: simple fixation task (1) in the real room and (2) in 3D VR room-like condition; complex fixation task in a 3D VR city-like condition (3) avoiding distractors and (4) counting them. Dual-task effect (DTE) measured the relative change in performance induced by the different attention-demanding conditions on postural parameters. Patients reduced sway area and mediolateral center of pressure displacement velocity DTE compared to controls (all, P < 0.049), but only under condition 4. They also showed a significant reduction in the sway area DTE under condition 4 compared to condition 3 (P = 0.025). This study provides novel preliminary evidence for the value of a 3D immersive VR environment combined with different attention-demanding conditions in adapting postural control in patients with FMDs. As supported by quantitative and objective posturographic measures, our findings may inform interventions to explore FMDs pathophysiology.

Is there a relationship between static postural control and core stability? A cross-sectional study in soccer players with groin pain

BackgroundStatic postural control disorders have been documented in soccer players suffering from groin pain (GP). Understanding the mechanisms of these disorders is crucial in designing rehabilitation programs. ObjectivesTo (i) assess static postural control and core stability in soccer players suffering from GP compared to their peers and (ii) explore the relationship between these two parameters. MethodsThis cross-sectional study involved 42 male soccer players suffering from GP (GP group: GPG) and 42 healthy players (control group: CG). Static postural control (stabilometric platform) and core stability (core endurance tests) were assessed. ResultsCenter of pressure velocity in the GPG was significantly higher compared to the CG during bipedal stance on the firm surface with eyes closed (2.66 [95 % CI: 0.86–3.67]; p < 0.01) and on the foam one (p < 0.001) in both conditions; eyes opened (2.88 [95 % CI: 1.42–4.43]) and closed (5.88 [95 % CI: 2.66–9.10]), and on the IL in eyes closed (12.54 [95 % CI: 4.27–20.80]; p < 0.01). Besides, GPG revealed significant (p < 0.001) lower core stability measures compared to CG. No significant associations (p > 0.05) were observed between static postural control and core stability in GPG. ConclusionSoccer players suffering from GP showed static disorders of postural control compared with their peers. These impairments were not associated with measures of core stability. These findings provide insight into the direction of future research exploring the mechanisms underlying deficits in static postural control in soccer players suffering from GP.

Use of the posturography platform as a tool for quantitative assessment of imbalance and postural control in post-stroke patients in chronic phase

Background. Imbalance during standing, which is usually observed as an asymmetry in the weight shifting toward to the unaffected side of the body, is one of the most common factors affecting the independence and quality of life of post-stroke patients. Clinical assessment of imbalance in post-stroke patients is often conducted by visual observation using standardised tools (balance tests). However, quantitative analysis, using a posturographic platform, is more accurate and provides more information about the patient's functional status. The TYMO® device, used in this study, is a portable posturography platform that measures tilts of the body's center of mass and reports the results of the rehabilitation process. It enables an objective, direct and quantitative assessment of the patient's functional status. Such an assessment can contribute to significant effectiveness of physiotherapy and consequently improve the patient's quality of life and shorten the period of abstinence from work. Objective. Quantitative assessment of imbalance and postural control using a posturography platform (TYMO®) in patients after ischaemic stroke, in the chronic phase, as an important component of the functional diagnosis process and rehabilitation programme design. To emphasise the role of the posturography platform (TYMO®) as a tool for measuring static balance - symmetry of body weight distribution, and a tool for monitoring and reporting the results of physiotherapy treatment. Methods. In the current study, before and after two weeks of rehabilitation, quantitative measurements of balance on the TYMO® platform were made in a group of subjects (n = 60: adults, after ischemic stroke – first stroke episode, in chronic phase – up to 5 years after the stroke incident occurred) undergoing therapy using neurophysiological methods (PNF – Proprioceptive Neuromuscular Facilitation and NDT-Bobath – Neurodevelopmental Treatment according to the Bobath concept) and the SPIDER system (Strengthening Program for Intensive Developmental Exercises and activities for Reaching health capability). Measurements included: the distance marked by the patient's center of mass while performing the test, the medial-lateral and anterior-posterior tilts of the subject's body, the area of movement marked by the body's center of mass, the average speed at which the patient performed the movement to maintain the required position, and the distribution of the subject's weight. Based on the posturographic results obtained before therapy, it was possible to design a targeted rehabilitation programme. The magnitude of the difference in measurements before and after rehabilitation made it possible to assess the impact of the therapy on the patient's balance. In addition, it was a specific indicator of the accuracy of the selection of physiotherapeutic treatment (a large difference in the mean results before and after therapy reflected an improvement in the parameters of postural control, hence the effectiveness of the therapy) and determined the direction of the future rehabilitation programme. Results and conclusions. The parameters measured by the TYMO® platform are crucial in assessing the functional status of post-stroke patients, especially with regard to postural control or balance disorders. The results described confirm the validity of using quantitative assessment, using the posturography platform, as an important component of the functional diagnostic process and designing an rehabilitation programme. The TYMO® platform itself is a useful tool for measuring, monitoring and reporting the effects of physiotherapeutic treatment in post-stroke patients.

Postural control of Parkinson's disease: A visualized analysis based on Citespace knowledge graph.

Postural control impairment is one of the primary motor symptoms in patients with Parkinson's disease, leading to an increased risk of falling. Several studies have been conducted on postural control disorders in Parkinson's disease patients, but no relevant bibliometric analysis has been found. In this paper, the Web of Science Core Collection database was searched for 1,295 relevant papers on postural control in Parkinson's disease patients from December 2011 to December 2021. Based on the Citespace knowledge graph, these relevant papers over the last decade were analyzed from the perspectives of annual publication volume, countries and institutes cooperation, authors cooperation, dual-map overlay of journals, co-citation literature, and keywords. The purpose of this study was to explore the current research status, research hotspots, and frontiers in this field, and to provide a reference for further promoting the research on postural control in Parkinson's disease patients.

Protocol for double-blinded randomized trial to enhance postural control after anterior cruciate ligament reconstruction by balance training and concurrent cognitive demands or external focus of attention

Anterior cruciate ligament (ACL) injury is one of the most common injuries among athletes that lead to postural control disorders. The aim of this study is to compare the effects of balance training with and without cognitive task and external focus of attention on postural control in individuals with ACL reconstruction. Sixty participants with ACL reconstruction, between the ages of 18 and 47 will be randomly allocated to three group's including routine balance training, balance training with external focus of attention. Patients will be assessed at the baseline, after receiving eight weeks of intervention, and four weeks later. A double-blinded design will be used. Center of pressure data acquired from a forceplate will be used to assess amount and velocity of sway, local dynamical stability, and global stability of upright balance. Also, dynamic balance will be assessed using Star Excursion balance test. The results of this research will be used to establish effectiveness of treatment strategies for postural control in individuals with anterior cruciate ligament reconstruction. The suggested interventions would be clinically applicable in the athlete with ACL injury.

Effects of "Taking the Waist as the Axis" Therapy on trunk postural control disorder after stroke: A randomized controlled trial.

Sufficient attention to trunk rehabilitation after stroke is still lacking. Loss of trunk selective activity is considered to be the leading cause of trunk postural control disorder after stroke. "Taking the Waist as the Axis" Therapy (WAT) was developed as a combination of the concept of "Taking the Waist as the Axis" from Tai Chi and the rehabilitation of trunk dysfunction after stroke. The present clinical trial examined and assessed the effects of WAT on stroke patients. A total of 43 stroke hemiplegic patients with trunk postural control disorder, whose Trunk Impairment Scale (TIS) scoring between 8 and 18, participated in the present study and were allocated randomly to the experimental (n = 23) or control groups (n = 20). The experimental group received WAT plus conventional therapy, and the control group received "Trunk Selective Activity" Therapy (TSAT) plus conventional therapy. Both groups received treatment once daily and 5 times per week for 3 weeks. The Trunk Impairment Scale (TIS), Fugl-Meyer Assessment (FMA), Berg Balance Scale (BBS), change of Intra-abdominal Pressure (IAP), static balance ability assessment, rapid ventilation lung function test and the Modified Barthel Index (MBI) were evaluated before and after intervention for both groups. The experimental group was superior to the control group in TIS [4 (2, 5) vs. 3 (1.25, 4), p = 0.030], change of IAP [-3 (-8, -1.33) vs. -0.02 (-3.08, 6), p = 0.011], FMA-upper extremity [10 (6, 18) vs. 1 (0, 3), p = 0.002], FMA-lower extremity [2 (1, 4) vs. 1 (0, 2), p = 0.009] and FMA [14 (7, 21) vs. 2 (0.25, 3.75), p = 0.001]. Within experimental group, forced vital capacity (FVC) [81.35 (63.30, 94.88) vs. 91.75 (79.40, 97.90), p = 0.02] was significantly improved. WAT was an effective trunk treatment after stroke, which significantly improved the patients' trunk posture control ability, motor function and forced vital capacity. However, the results still need to be interpreted with caution for the intervention only lasted for 3 weeks.

Determinants of cerebral palsy in children: systematic review.

Cerebral palsy (CP) is a group of disorders of movement and postural control caused by a nonprogressive defect or lesion of the developing brain. Several prepregnancy risk factors have been described including maternal age, parity and maternal diseases including epilepsy, diabetes and thyroid disease. There are few in-depth studies on the causes of CP. In the present systematic review, databases searched were Google Scholar and PubMed to identify data on determinants of CP in the world. Studies were included if they specifically mentioned CP as an outcome, the study objective is to identify factors associated with CP in children and all quantitative observational studies. JBI Critical Appraisal Tools were used to assess the methodological quality of a study. Papers that meet the inclusion criteria were rigorously appraised by two critical appraisers. 40 consistent determinants of CP in children from 95 research articles that meet inclusion criteria are included in the review. The majority of studies (24 articles) showed that premature babies and low weight were determinants of CP in children, whereas 15 studies showed that low Apgar scores were determinants of CP in children. The commonest determinants of CP in children are premature babies and low weight, low Apgar scores, intrauterine infection, congenital brain malformations, thyroid disease, premature rupture of membrane (PROM) and placental abruption. Preventing preterm delivery, low birth weight and intrauterine infection as well as immediate neonatal resuscitation for newborns with low Apgar scores may help to prevent CP in children.

Comparison of the Dynamic Postural Control During Lifting and Lowering an External Load in Low Back Pain: A Cross-Sectional Study

ObjectiveThis study aimed to compare dynamic postural control between individuals with and without chronic low back pain (LBP) through load lifting and lowering. MethodsThis cross-sectional study included 52 male patients with chronic LBP (age: 33.37 ± 9.23 years) and 20 healthy male individuals (age: 31.75 ± 7.43 years). The postural control parameters were measured using a force plate system. The participants were instructed to stand barefoot (hip-width apart) on the force plate and lift a box (10% of the weight of the participants) from the waist height to overhead and then lower it from overhead to waist height. The interaction between the groups and tasks was determined using a 2-way repeated-measures analysis of variance. ResultsThere was no significant interaction between the groups and tasks. Regardless of the groups, postural control parameters including amplitude (P = .001) and velocity (P < .001) in anterior-posterior (AP) direction, phase plane in medial-lateral (ML) direction (P = .001), phase plane in AP-ML direction (P = .001), and the mean total velocity (P < .001) were lesser during the lowering compared with lifting. The results indicated that, regardless of the tasks, the postural control parameters including velocity (P = .004) and phase plane in AP direction (P = .004), velocity in ML direction (P < .001), phase plane (AP-ML) (P = .028), and mean total velocity (P = .001) in LBP were lesser compared with the normal group. ConclusionDifferent tasks affected postural control differently in patients with LBP and healthy individuals. Moreover, postural control was more challenged during the load-lowering than the load-lifting task. This may have been a result of a stiffening strategy. It may be that the load-lowering task might be considered as a more influential factor for the postural control strategy. These results may provide a novel understanding of selecting the rehabilitation programs for postural control disorders in patients.

Influence of chemotherapy on postural control and quality of life in women with gynaecological cancer: a protocol of a prospective observational study

IntroductionChemotherapy-induced peripheral neuropathy is a frequent side effect of some chemotherapies that can cause postural control disorders and has a serious impact on quality of life (QoL). An enhanced understanding...

Influence of Speech and Cognitive Load on Balance and Timed up and Go.

The interaction between oral and/or mental cognitive tasks and postural control and mobility remains unclear. The aim of this study was to analyse the influence of speech production and cognitive load levels on static balance and timed up and go (TUG) during dual-task activities. Thirty healthy young subjects (25 ± 4 years old, 17 women) participated in this study. A control situation and two different cognitive arithmetic tasks were tested: counting backward in increments of 3 and 7 under oral (O) and mental (M) conditions during static balance and the TUG. We evaluated the dual-task cost (DTC) and the effect of speech production (SP) and the level of cognitive load (CL) on these variables. There was a significant increase in the centre of pressure oscillation velocity in static balance when the dual task was performed orally compared to the control situation The DTC was more pronounced for the O than for the M. The SP, but not the CL, had a significant effect on oscillation velocity. There was an increase in TUG associated with the cognitive load, but the mental or oral aspect did not seem to have an influence. Mobility is more affected by SP when the cognitive task is complex. This may be particularly important for the choice of the test and understanding postural control disorders.

The Effect of Cognitive Task on Postural Control Dynamic Regularity of Athletes With Chronic Ankle Instability When Standing on an Unstable Surface

Background and Objectives: Postural control disorder is a common complication in patients with Chronic Ankle Instability (CAI). The present study aimed to investigate the effect of dual cognitive task on postural control behavior with regard to the Center of Pressure (CoP) signal regularity while standing on an unstable surface in athletes with CAI. Methods: In the present study, 58 men participated in two groups of healthy and patients with CAI. The CoP signal was examined in 4 different unstable states on the wobble board located at the center of the force plate. The regularity of the signals recorded from the force plate was investigated using sample entropy in two directions: anterior-posterior and medial-lateral. Results: In both groups, there was a significant difference in CoP’s sample entropy signal when performing a cognitive task with a postural task (P&lt;0.001). There was a significant difference between the two groups in the cognitive task and the single task in the anteroposterior direction while standing on two legs. Conclusion: During dual tasks, the patients with CAI have a more dynamic regularity in the CoP signal than their normal counterparts. In the dual-task condition, more irregularities are observed in the CoP signal of healthy individuals. In unstable conditions, patients with CAI decrease the adaptability of postural control behavior with increasing CoP signal regularity.

Evaluating the Effects of Botulinum Toxin Injection and Physiotherapy on Post-Stroke Patients During One Year Observation - a Pilot Study

Introduction: Stroke is a serious health problem in the modern population. Spasticity is one of the consequences of stroke and affects about 30% of people. Increased muscle tone affects postural control disorders. Due to the specificity of spasticity, therapy in post-stroke patients is a challenge for neurological physiotherapy. Therefore, it requires the development of appropriate management standards . Study aim: The aim of the study was to evaluate the effectiveness of 3 combination therapy cycles based on botulinum toxin injection and physiotherapy for muscle tone, muscle strength and postural stability in post-stroke patients qualified for the spasticity treatment programme of the lower and upper limbs. Material and methods: The pilot study involved 12 patients (6 from the lower limb and 6 from the upper limb programme). The 1-year combination therapy programmes included 3 botulinum toxin injections and 3 weeks of physiotherapy after each injection. Clinical evaluation was conducted before and after the 1-year observation cycle. The results were evaluated using: MAS (Modified Ashworth Scale), MRC (Medical Research Council Scale) and posture stability test on a balance platform (BiodexSD). Results: A decrease was observed in muscle tone of the lower and upper limbs, as well as an increase in muscular strength of the upper limb. However, there were no noted statistical significance of the studied parameters. Conclusions: Physiotherapy in combination with the botulinum toxin is an important element of improvement in post-stroke patients. However, further research is needed to explicitly confirm its effectiveness.

Iron deficiency anemia induces postural control disorders in young women

BackgroundDue to menstruation and restrictive dietary practices, women are at a particular risk of iron deficiency anemia (IDA). This hematologic manifestation could impair postural control as it induces fatigue, muscle weakness, cognitive and neurological functions alteration. AimThis study aimed to investigate IDA effects on postural control in young women in comparison to healthy counterparts. Material and methodsTwenty-four young women with IDA and twenty-four controls participated in this study. Center of pressure (CoP) excursions, in the bipedal and semi-tandem postures on the firm and foam surfaces in the eyes opened (EO) and closed (EC), were recorded, and Romberg index was calculated to evaluate postural control. Besides physical performance, attentional capacity, fatigue, and heart and respiratory rates were assessed. ResultsYoung women with IDA had significantly higher CoP velocity (CoPv) values in the bipedal posture in both vision and surface conditions (EO [firm: P < 0.001 and foam: P < 0.01]; EC: P < 0.001), as well as in the semi-tandem posture (EO [firm: P < 0.01 and foam: P < 0.001]; EC: P < 0.001) compared to controls indicating that they had worse postural control than their peers. In addition, values of the respiratory rate (P < 0.001), attentional capacity (P < 0.001), physical performance (P < 0.001), fatigue (P < 0.001), and Romberg index on the foam surface in both postures (P < 0.05) were significantly higher in young women with IDA compared to controls. ConclusionsPhysical performance, fatigue, tachypnea and attentional capacity resulting from IDA may explain postural control disorder in young women.

Motor dual task with eyes closed improves postural control in patients with functional motor disorders: A posturographic study.

Functional motor disorders (FMD) are highly disabling neurological conditions in which postural control deficits increase the risk of falls and disability in performing daily living activities. Scattered evidence suggests that such disturbances may depend on abnormal attentional focus and might improve with distraction. How do motor and cognitive dual tasks performed under two different sensory conditions shape postural control in patients with FMD. This posturographic study involved 30 patients with FMD (age, 45.20 ± 14.57 years) and 30 healthy controls (age, 41.20 ± 16.50 years). Postural parameters were measured with eyes open, and eyes closed in quiet stance (single task) and on a motor dual task (m-DT) and a calculation (cognitive) dual task (c-DT). The dual task effect (DTE, expressed in percentage) on motor and cognitive performance was calculated for sway area, length of Center of Pressure (CoP), and velocity of CoP displacement. There was a statistically significant three-way interaction between task, condition, and group for the DTE on sway area (p = 0.03). The mean sway area DTE on the motor task in the eyes-closed condition was increased by 70.4 % in the healthy controls, while it was decreased by 1% in the patient group (p = 0.003). No significant three-way interaction was observed for the DTE on length of CoP and velocity of CoP displacement. This study provides novel preliminary evidence for the benefit of a simple motor dual task in the eyes closed condition as a way to improve postural control in patients with FMD. These findings are relevant for the management of postural control disorders in patients with FMD.

Biomechanical and cognitive interactions during Visuo Motor Targeting Task

BackgroundBiomechanical analyses primarily focus on physical aspects of human movement; however, it is not understood how walking is affected while simultaneously performing a demanding cognitive task - a form of Cognitive-Motor Interference (CMI). CMI occurs when performance of a primary task (e.g. walking) is affected following the introduction of a cognitive task (e.g. visual search). Research questionWould Visuo Motor Targeting Task (VMTT) impair visual search performance and reduce the margin of stability (MoS) at higher gait speeds? MethodsA protocol was developed to investigate responses of the neuromuscular system while performing a complex visual search task. The Computer Assisted Rehabilitation ENvironment (CAREN, Motekforce Link, Netherlands) system was used for the experimental design. Twenty male participants (Age = 24.2 ± 2.5yrs, Weight = 70.3 ± 10.6 kg, Height = 178.0 ± 9.1 cm) located and pointed towards targets in complex scenes while walking at different gait speeds (0.55, 1.11 and 1.67 m/s.) or while stationary. The cost of visual search during a Visuo Motor Targeting Task (VMTT) was based on the pointing accuracy during the visual search task. ResultsA two-way repeated measure ANOVA showed that MoS in the ML direction significantly improved with increased gait speed and during the visual search task. There was also a significant interaction with MoS improvement being greater during the visual search task at high gait speeds. MoS in the AP was only affected by gait speed. Visual performance and cost of visual search were enhanced during walking versus standing up to 25 %. SignificanceThis study investigated CMI at different gait speeds, which may have implications in postural control, falls and other neurological disorders.

Effect of targeted physiotherapy on the quality of life of patients with epilepsy of unknown etiology – a pilot study

Introduction: Epilepsy is one of the most common diseases of the central nervous system. According to the World Health Organization, it accounts for 1% of the global burden of disease worldwide. Pharmacotherapy remains the primary therapeutic tool in this disease. However, more and more emphasis is placed on approaching this group of patients in an interdisciplinary manner, taking their various needs into account: social, professional, economic or psychological. Attention is also paid to the positive impact of physical activity on the quality of life of patients with epilepsy. The patients with diagnosed epilepsy often complain of a feeling of instability not reflected in standard neurological examination. Early detection of postural control disorders is possible using an objective research tool which is the modified CTSIB test (Clinical Test of Sensory Interaction and Balance). Aim of the study: The aim of the study was to assess the influence of targeted physical therapy on the quality of life among patients with diagnosed epilepsy of unknown etiology using the SF-36 quality of life questionnaire. Materials and methods: The study included 11 professionally active adults with diagnosed generalized epilepsy of unknown etiology, treated at the Department or Outpatient Clinic of Neurology at John Paul II Specialist Hospital in Kraków. Finally, out of the 11 recruited patients (5 women and 6 men), 1 patient was excluded from the study due to a history of craniocerebral trauma. Patients were examined 3 times every month using EEG and the SF-36 quality of life questionnaire. Additionally, between the 2nd and the 3rd month of the pilot study, the study group underwent physical therapy focused on balance disorders using the Biodex SD stabilometric platform. Results: Overall, the quality of life index measured using the SF-36 quality of life questionnaire in the study group improved after the completion of targeted physical therapy. Conclusions: 1. Generalized epilepsy of unknown etiology results in a significant deterioration in the quality of life of patients, which may also be accompanied by disorders of postural control. 2 A targeted program of physiotherapy in the treatment of patients with generalized epilepsy of unknown etiology may has a positive effect on their quality of life. null

Maximal stability limits in adolescents with Tourette syndrome

We explored if adolescents with Gilles de la Tourette syndrome (GTS) had functional postural control impairments and how these deficits are linked to a disturbance in the processing and integration of sensory information. We evaluated the displacements of the center of pressure (COP) during maximal leaning in four directions (forward, backward, rightward, leftward) and under three sensory conditions (eyes open, eyes closed, eyes closed standing on foam). GTS adolescents showed deficits in postural stability and in lateral postural adjustments but they had similar maximal COP excursion than the control group. The postural performance of the GTS group was poorer in the eyes open condition (time to phase 1 onset, max-mean COP). Moreover, they displayed a poorer ability to maintain the maximum leaning position under the eyes open condition during mediolateral leaning tasks. By contrast, during forward leaning, they showed larger min-max ranges than control subjects while standing on the foam with the eyes closed. Together, these findings support the idea that GTS produces subclinical postural control deficits. Importantly, our results suggest that postural control disorders in GTS are highly sensitive to voluntary postural leaning tasks which have high demand for multimodal sensory integration.

Rambling-trembling analysis of postural control in children aged 3-6 years diagnosed with developmental delay during infancy

BackgroundPreschool age is fundamental for the development of gross motor skills. Timely detection of postural stability deficits using objective methods would facilitate early implementation of therapeutic strategies. Research questionWhat are the age- and gender-related differences in postural control between preschool children diagnosed with developmental delay in their first year of life and children with typical development? MethodsThe study group consisted of 59 children diagnosed with developmental delay during infancy, who had received physiotherapy in the first year of their life for disorders of postural control and prone locomotion as well as abnormal distribution and magnitude of postural tone. The control group comprised 66 nursery school children with typical development and no history of postural control or movement deficits and no physiotherapy interventions in the first year of their life. The study and control groups were subdivided into four subgroups based on age (3–4 years, 5–6 years) and gender (boys, girls).The data were collected during quiet standing using a force plate. Three 30-second trials were recorded. Stabilographic recordings were analysed using the rambling-trembling approach. ResultsThree-way ANOVA revealed a gender effect on all measured variables (p < 0.05). The Tukey HSD (honest significant difference) post-hoc test showed that some of the values of sway range and mean velocity of COP, rambling and trembling in sagittal and frontal plane were significantly greater in control boys aged 3–4 years compared to other subgroups (p < 0.05). SignificanceLong-term postural control monitoring by a pediatrician and/or physiotherapist seems justified and not only in children with a history of infantile developmental delay but also in their healthy peers, especially boys.

Associated Disorders of Locomotion and Postural Control of Axial Segments in Cerebral Palsy

Associated Disorders of Locomotion and Postural Control of Axial Segments in Cerebral Palsy

Trends in the Analysis of Static Balance

The aim of the paper was to discuss the trends in the analysis of static balance and relation between physiological parameters and characteristics of posturograms. Static balance is ability to keep steady posture in certain stance [2, 3]. Posturography is one of most popular research methods of static balance [10, 11]. During the last decade it was maintained that the most informative dependent variables defining postural stability were the amplitude of the center of foot pressure (COP) sway in anterior-posterior and mediolateral directions, the length of the COP pathway and the area of the COP sway [9, 15]. The output of the posturograms registered during quiet standing is irregular and erratic [14]. Therefore, methods analyzing the structure of the posturograms are very topical for physiology and Rehabilitation science. The scientists attempt to determine certain noise and oscillation patterns in the posturogram [20]. According to researchers [14], the structure and roughness or smoothness of the posturogram could reflect the changes in postural control system. It is still questionable which of the methods analyzing the posturogram outcomes could be the most informative and useful for the diagnostics of postural control disorders. It is important to be able to repeat the scientific study, but it is still complicated to solve tasks related to postural control disorders diagnostics and the evaluation of the treatment means effectiveness. It is important to define the relation between physiological parameters and characteristics of posturograms in order to apply the posturography for balance disorders diagnostics. We suppose that methods of posturogram structure analysis could improve the differential balance disorders diagnostics essentially.Keywords: static balance, static posturography, center of foot pressure.