scholarly journals Effects of Limb Dominance on Postural Balance in Sportsmen Practicing Symmetric and Asymmetric Sports: A Pilot Study

Symmetry ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2199
Author(s):  
Mohamed Abdelhafid Kadri ◽  
Frédéric Noé ◽  
Julien Maitre ◽  
Nicola Maffulli ◽  
Thierry Paillard
Keyword(s):  
Postural Control ◽  
Physiological State ◽  
Frontal Plane ◽  
Relative Increase ◽  
Foot Pressure ◽  
Before And After ◽  
Center Of Foot Pressure ◽  
Fatiguing Exercise ◽  
Spatio Temporal ◽  
The Difference

The current literature shows no consensus regarding the difference between the dominant leg (D-Leg) and the non-dominant leg (ND-Leg) in terms of postural control. This lack of consensus could stem from motor experience (i.e., symmetric or asymmetric motricity) and/or the physiological state induced by physical exercise. This study aimed to investigate the acute effects of fatiguing exercise on postural control when standing on the D-Leg and the ND-Leg, in athletes practicing symmetric (SYM) and asymmetric (ASYM) sports. Thirty healthy male participants were recruited and divided into two groups, (SYM n = 15) and (ASYM n = 15, on the basis of the motricity induced by the sport they practice. Monopedal postural control was assessed for the D-Leg and the ND-Leg before and after the fatigue period (which consisted of repeating squats until exhaustion). A force platform was used to calculate the spatio-temporal characteristics of the displacements of the center of foot pressure (COP). A significant fatigue effect was observed in both groups on the D-Leg and the ND-Leg for all the COP parameters. There was a tendency (p = 0.06) between the ASYM and SYM groups on the D-Leg, concerning the relative increase in the COP velocity in the frontal plane after the fatigue period. The fatigue condition disturbed postural control in both the SYM and ASYM groups on the D-Leg and ND-Leg. This disturbing effect related to fatigue tends to be more marked in athletes practicing asymmetric sports than in athletes practicing symmetric sports on the D-Leg.

Comparison of Postural Control of Children with down Syndrome and Those with other Forms of Mental Retardation

1997 ◽  
Vol 84 (2) ◽  
pp. 499-504 ◽  
Author(s):  
Mitsuru Kokubun ◽  
Takashi Shinmyo ◽  
Mizue Ogita ◽  
Keiichi Morita ◽  
Masaki Furuta ◽  
...  
Keyword(s):  
Down Syndrome ◽  
Mental Retardation ◽  
Postural Control ◽  
Foot Pressure ◽  
Children With Down Syndrome ◽  
Center Of Foot Pressure ◽  
The Mean

To confirm the 1994 findings of Okuzumi, Haishi, and Kokubun, the displacement of the center of foot pressure, one-foot balance and bead sway were measured in children with Down syndrome ( n = 11) compared to those with other types of mental retardation ( n = 17). The magnitudes of the displacement of the center of foot pressure and head sway were not significantly different between the Down group and other forms of mental retardation, whereas the performance of one-foot balance was significantly lower in the Down group. The mean frequencies of sway waves were generally higher in the Down group, and the differences between the two groups were significant except for sagittal head sway. The results generally supported the prior findings. We proposed that it was not the magnitude of the displacement of the center of foot pressure but rather the manner of the whole body's sway which might be related to postural control.

Comparing the effects of cold compress and Xyla-p cream on hemodynamic changes in hemodialysis patients during venipuncture

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
Ziba Ghoreyshi ◽  
Monireh Amerian ◽  
Farzaneh Amanpour ◽  
Reza Mohammadpourhodki ◽  
Hossein Ebrahimi
Keyword(s):  
Blood Pressure ◽  
Physiological State ◽  
Vital Signs ◽  
Hemodialysis Patients ◽  
Control Group ◽  
Intermittent Hemodialysis ◽  
Significant Difference ◽  
Before And After ◽  
The Mean ◽  
The Difference

AbstractBackgroundThe vital signs reflect the physiological state of patients in various clinical conditions. The purpose of this study was to compare the effects of cold compress and Xyla-P cream on hemodynamical changes during venipuncture in hemodialysis patients.Methods and MaterialIn this clinical trial study, 50 patients under hemodialysis were selected by simple random sampling. The patients were then randomly assigned to either Xyla-P cream, cold compress or placebo groups. The vital signs (blood pressure and pulse) were measured upon two intermittent hemodialysis sessions before and after venipuncture. Data were analyzed using repeated measures analysis of variance.ResultsThe mean alternation in systolic blood pressure was significantly different comparing the placebo and cold compress groups before and after intervention (p<0.001). However, the difference was not significant between the Xyla-P cream group and either placebo (p=0.402) or ice compress (p=0.698) groups. The difference of the mean diastolic blood pressure was significant comparing the placebo group with either the Xyla-P cream group (p=0.003) or cold compress group (p<0.001) before and after intervention. In addition, there was a significant difference in the mean number of heartbeats comparing the control group with either the Xyla-P cream group (p<0.001) or cold compress group (p<0.001) before and after the intervention.ConclusionsConsidering the beneficial effects of ice compress and the Xyla-P cream on reduction of cardiovascular parameters, it is recommended to use these methods in hemodialysis patients during venipuncture.

scholarly journals Radioembolization versus portal vein embolization for contralateral liver lobe hypertrophy: effect of cirrhosis

2021 ◽  
Author(s):  
Heiner Nebelung ◽  
Thomas Wolf ◽  
Sebastian Bund ◽  
Christoph Georg Radosa ◽  
Verena Plodeck ◽  
...  
Keyword(s):  
Portal Vein ◽  
Portal Vein Embolization ◽  
Future Liver Remnant ◽  
Relative Increase ◽  
Limiting Factor ◽  
Liver Lobe ◽  
Liver Malignancy ◽  
Liver Remnant ◽  
Before And After ◽  
The Difference

Abstract Purpose Preoperative hypertrophy induction of future liver remnant (FLR) reduces the risk of postoperative liver insufficiency after partial hepatectomy. One of the most commonly used methods to induce hypertrophy of FLR is portal vein embolization (PVE). Recent studies have shown that transarterial radioembolization (TARE) also induces hypertrophy of the contralateral liver lobe. The aim of our study was to evaluate contralateral hypertrophy after TARE versus after PVE taking into account the effect of cirrhosis. Methods Forty-nine patients undergoing PVE before hemihepatectomy and 24 patients with TARE as palliative treatment for liver malignancy were retrospectively included. Semi-automated volumetry of the FLR/contralateral liver lobe before and after intervention (20 to 65 days) was performed on CT or MRI, and the relative increase in volume was calculated. Cirrhosis was evaluated independently by two radiologists on CT/MRI, and interrater reliability was calculated. Results Hypertrophy after PVE was significantly more pronounced than after TARE (25.3% vs. 7.4%; p < 0.001). In the subgroup of patients without cirrhosis, the difference was also statistically significant (25.9% vs. 8.6%; p = 0.002), whereas in patients with cirrhosis, the difference was not statistically significant (18.2% vs. 7.4%; p = 0.212). After PVE, hypertrophy in patients without cirrhosis was more pronounced than in patients with cirrhosis (25.9% vs. 18.2%; p = 0.203), while after TARE, hypertrophy was comparable in patients with and without cirrhosis (7.4% vs. 8.6%; p = 0.928). Conclusion TARE induces less pronounced hypertrophy of the FLR compared to PVE. Cirrhosis seems to be less of a limiting factor for hypertrophy after TARE, compared to PVE. Graphic abstract

scholarly journals The Disturbing Effect of Neuromuscular Fatigue on Postural Control Is Accentuated in the Premenstrual Phase in Female Athletes

2021 ◽  
Vol 12 ◽  
Author(s):  
Maissa Kacem ◽  
Rihab Borji ◽  
Sonia Sahli ◽  
Haithem Rebai
Keyword(s):  
Postural Control ◽  
Luteal Phase ◽  
Female Athletes ◽  
Center Of Pressure ◽  
Voluntary Contraction ◽  
Follicular Phase ◽  
Balance Test ◽  
Fatigue Effect ◽  
Before And After ◽  
Fatiguing Exercise

This study explored the fatigue effect on postural control (PC) across menstrual cycle phases (MCPs) in female athletes. Isometric maximal voluntary contraction (IMVC), the center of pressure sway area (CoParea), CoP length in the medio-lateral (CoPLX) and antero-posterior (CoPLY) directions, and Y-balance test (YBT) were assessed before and after a fatiguing exercise during the follicular phase (FP), mid-luteal phase (LP), and premenstrual phase (PMP). Baseline normalized reach distances (NRDs) for the YBT were lower (p = 0.00) in the PMP compared to others MCPs, but the IMVC, CoParea, CoPLX, and CoPLY remained unchanged. After exercise, the IMVC and the NRD decrease was higher at PMP compared to FP (p = 0.00) and LP (p = 0.00). The CoParea, CoPLX, and CoPLY increase was higher in the PMP compared to FP (p = 0.00) and LP (p = 0.00). It was concluded that there is an accentuated PC impairment after exercise observed at PMP.

scholarly journals Trends in the Analysis of Static Balance

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Vilma Juodžbalienė ◽  
Kazimieras Muckus
Keyword(s):  
Postural Control ◽  
Physiological Parameters ◽  
Quiet Standing ◽  
Static Balance ◽  
Foot Pressure ◽  
Postural Control System ◽  
Balance Disorders ◽  
Dependent Variables ◽  
Center Of Foot Pressure ◽  
Anterior Posterior

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.

scholarly journals Effectiveness and Limitations of Unsupervised Home-Based Balance Rehabilitation with Nintendo Wii in People with Multiple Sclerosis

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Massimiliano Pau ◽  
Giancarlo Coghe ◽  
Federica Corona ◽  
Bruno Leban ◽  
Maria Giovanna Marrosu ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Postural Control ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Balance Training ◽  
Frontal Plane ◽  
Nintendo Wii ◽  
Postural Control System ◽  
Home Based ◽  
Before And After

Balance training represents a critical part of the rehabilitation process of individuals living with multiple sclerosis (MS) since impaired postural control is a distinctive symptom of the disease. In recent years, the use of the Nintendo Wii system has become widespread among rehabilitation specialists for this purpose, but few studies have verified the effectiveness of such an approach using quantitative measures of balance. In this study, we analyzed the postural sway features of a cohort of twenty-seven individuals with MS before and after 5 weeks of unsupervised home-based balance training with the Wii system. Center of pressure (COP) time-series were recorded using a pressure platform and processed to calculate sway area, COP path length, displacements, and velocities in mediolateral (ML) and anteroposterior (AP) directions. Although the results show a significant reduction in sway area, COP displacements, and velocity, such improvements are essentially restricted to the ML direction, as the Wii platform appears to properly stimulate the postural control system in the frontal plane but not in the sagittal one. Available Wii games, although somewhat beneficial, appear not fully suitable for rehabilitation in MS owing to scarce flexibility and adaptability to MS needs and thus specific software should be developed.

scholarly journals Treatment Resort Extended with Modern Feedback Exercises Using Virtual Reality to Improve Postural Control in Patients Aged 65+ with an Increased Risk of Falls. Preliminary Study

2019 ◽  
Vol 61 (3) ◽  
pp. 163-170
Author(s):  
Laura Piejko ◽  
Krzysztof Cygoń ◽  
Kamila Niewolak ◽  
Dariusz Fielek ◽  
Paula Pecyna ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Postural Control ◽  
Statistical Significance ◽  
Spa Therapy ◽  
Foot Pressure ◽  
Increased Risk ◽  
Standing Up ◽  
Bowel Movements ◽  
Risk Of Falls ◽  
Center Of Foot Pressure

Introduction: The aim of the study was to learn the influence of treatment resort extended with modern exercises with feedback using virtual reality for postural control and reducing the risk of falls in people aged 65+. Material and Methods: Seventy four people (46 women, 28 men; aged 65-84) participated for three weeks in spa therapy, which was extended with physical exercises using feedback based on virtual reality to improve postural control and reduce the risk of falls. Postural control tests, “get up and go” test (TUG) and test standing up from the chair for 30 seconds were performed to assess the progress of the therapy. Results: After treatment in the Romberg trial performed on the stabilometric platform with open and closed eyes, a statistically significant improvement in most parameters indicating improved postural control was noted, including reduction of path length and surface area of center of foot pressure (COP), reduction of the length and speed of bowel movements COP in the frontal and sagittal planes. A statistically significant reduction in the time of the TUG test and increase the number of repetitions of standing up from the chair in 30 seconds were also noted. Statistical significance was assumed at the level of p≤0.05. Conclusions: Treatment resort enriched with exercises using virtual reality and feedback contributes to improving postural control and reducing the risk of falls in people aged 65+. The results of the study should be confirmed in high-quality therapeutic experiments, including control groups.

scholarly journals The Effect of Resistance and Balance Training on Postural Control and Physical Fitness in Adults with Down Syndrome

2021 ◽  
Vol 30 (2) ◽  
pp. 175-182
Author(s):  
Yun-A Shin ◽  
Sang-Min Hong ◽  
Jong-Sun Lee ◽  
Hyo-Been Jeong
Keyword(s):  
Down Syndrome ◽  
Physical Fitness ◽  
Postural Control ◽  
Training Program ◽  
Center Of Pressure ◽  
Balance Training ◽  
Control Group ◽  
Fat Percentage ◽  
Foot Pressure ◽  
The Difference

PURPOSE:This study aimed to examine the effects of resistance and balance training on physical function and postural control in individuals with Down syndrome (DS).METHODS:Ten adults with DS constituted the experimental group (EX) and attended an 8-week resistance and balance training program. The results were compared with those of the control group (CON), which consisted of 10 patients who did not undergo any physical training. Body composition, postural stability, and physical fitness were measured before and after the training program. Resistance and balance training were performed for 60 minutes, three times a week for 8 weeks.RESULTS: Body weight, body mass index, body fat percentage, and waist circumference decreased significantly in the EX group after completing the 8-week resistance and balance training program. The center of pressure and the difference between standing foot pressure on the left and right were significantly improved in the EX group. Physical fitness including sit-to-stand repetitions and 10 m shuttle duration significantly improved in the EX and CON groups.CONCLUSIONS:These results suggest that resistance and balance training to improve musculoskeletal problems is an effective strategy to prevent injury, fatigue, and falls during exercise and to improve general health in individuals with DS.

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