scholarly journals The Effects of Leg Preference on Transient Characteristics of Body Sway During Single-Leg Stance: A Cross-Sectional Study

2021 ◽  
Vol 14 ◽  
Author(s):  
Žiga Kozinc ◽  
Nejc Šarabon
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Transient Behavior ◽  
Cross Sectional Study ◽  
The Body ◽  
Body Sway ◽  
Cross Sectional ◽  
Transient Characteristics ◽  
Velocity Amplitude ◽  
Additional Information

Instrumented assessments of quiet-stance postural control typically involve recording and analyzing of body sway signal, most often the center of pressure (CoP) movement. It has been recently suggested that transient characteristics of body sway may offer additional information regarding postural control. In this study, we explored the relationship between whole-trial estimates of body sway (CoP velocity, amplitude, and frequency) and corresponding transient behavior indexes, as well as the effects of leg preference. A total of 705 healthy young athletes performed 30 s single-leg body sway trials for both legs. It was found that the transient characteristics of the body sway (expressed as relative differences between individual time intervals within the trial) are in negligible or weak correlation (r ≤ 0.26) with the corresponding variables, averaged across the whole trial. All CoP variables showed transient characteristics, reflected in statistically significant decrease (CoP velocity and amplitude) or increase (CoP frequency) throughout the trial. The preferred leg showed smaller body sway; however, the effect sizes were very small. Moreover, differences between the legs were also noted in terms of transient characteristics of body sway. In particular, the preferred leg showed earlier reduction in anterior–posterior body sway and larger reduction in medial–lateral body sway. Further studies should focus on examining the clinical utility of indexes of transient behavior of body sway, for instance, their sensitivity to aging-related changes and risk of falling.

scholarly journals Is Postural Control Different in Boys and Girls? Comparison Between Sex

2020 ◽  
Vol 27 (4) ◽  
pp. 385-391
Author(s):  
Jessica Caroliny de Jesus Neves ◽  
Aryane Karoline Vital Souza ◽  
Dirce Shizuko Fujisawa
Keyword(s):  
Physical Activity ◽  
Postural Control ◽  
Test Performance ◽  
Center Of Pressure ◽  
Cross Sectional Study ◽  
Lateral Velocity ◽  
Cross Sectional ◽  
Stage Of Development ◽  
Significant Difference ◽  
Pressure Area

ABSTRACT The purpose of this study was to compare the postural control between eight-year-old boys and girls, considering the nutritional classification and level of physical activity. This was a cross-sectional study, with a sample of 346 participants, classified by the WHO AnthroPlus software, evaluated on the force platform and the Questionnaire Physical Activity for Children. The results demonstrated that girls showed lower values in relation to the opposite sex (p<0.001), in the center of pressure area (COP) (girls: 11.88 vs boys: 15.86cm2), Antero-posterior Amplitude (girl: 5.40 vs boy: 6.05cm), Medial-lateral Amplitude (girl: 3.97 vs boy: 4.40cm), Antero-posterior velocity (girl: 3.98 vs boy: 4.94cm/s), Medial-lateral velocity (girl: 3.98 vs boy: 4.59cm/s), Antero-posterior frequency (girl: 0.70 vs boy: 0.84Hz). Physical activity was associated with male sex (p=0.001; X2=11.195; odds ratio=0.372). In relation to the center of pressure of sedentary children, girls showed better postural control (p<0.001), but when we analyzed the center of pressure of both sexes who were active there was no statistically significant difference (p=0.112). The Z score of both sexes presented no difference in the center of pressure area (p=0.809 and p=0.785 respectively). Girls showed better postural control, while boys are more active; when both sexes performed physical activity COP area was similar. Therefore, special care should be taken when assessing postural control in boys and girls due to their differences in test performance and stage of development. As for interventions, exercise should be considered for better performance of the COP.

scholarly journals Physical Activity Practice and Optimal Development of Postural Control in School Children: Are They Related?

2020 ◽  
Vol 9 (9) ◽  
pp. 2919 ◽  
Author(s):  
Jose L. García-Soidán ◽  
Jesús García-Liñeira ◽  
Raquel Leirós-Rodríguez ◽  
Anxela Soto-Rodríguez
Keyword(s):  
Physical Activity ◽  
Postural Control ◽  
School Children ◽  
Cross Sectional Study ◽  
The Body ◽  
Healthy Children ◽  
Sectional Study ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Control State

Background: This study aims to analyze the effect of physical activity practice on the postural control state of school children. If such an effect was detected, the second aim of the study was to identify which specific capacities of postural control benefited the most from physical activity. Methods: A cross-sectional study was performed using a convenience sample of 118 healthy children (54 girls) with a mean age of 10.3 ± 1.2 years. Their weight and height were measured. The accelerometric assessment of balance included four different tests in static balance and walking. Results: Physical activity habit prevalence was 38.9% in girls and 60.9% in boys, and its frequency was 2.3 days per week in girls and 2.8 days in boys. The active children obtained lower accelerations, but the active and sedentary girls showed lower accelerometric values than the active boys. The logistic regression analysis demonstrated the influence of sex on the accelerations of the body (p < 0.001), regardless of the habit of physical activity. Conclusions: Active children have better postural control than sedentary children, although sedentary girls have better balance than active boys. Therefore, physical activity practice seems to favor a more efficient development of postural control, but it cannot level or reverse the effect of the neurophysiological factors that are conditioned by sex.

scholarly journals Postural control among elderly women with and without osteoporosis: is there a difference?

2010 ◽  
Vol 128 (4) ◽  
pp. 219-224 ◽  
Author(s):  
Thomaz Nogueira Burke ◽  
Fabio Jorge Renovato França ◽  
Sarah Rúbia Ferreira de Meneses ◽  
Viviam Inhasz Cardoso ◽  
Rosa Maria Rodrigues Pereira ◽  
...  
Keyword(s):  
Postural Control ◽  
Elderly Women ◽  
Center Of Pressure ◽  
The Elderly ◽  
Cross Sectional Study ◽  
Clinical Test ◽  
Mineral Density ◽  
Maximum Displacement ◽  
Cross Sectional ◽  
School Of Medicine

CONTEXT AND OBJECTIVE: Little is known about postural control among elderly individuals with osteoporosis and its relationship with falls. It has been suggested that elderly women with kyphosis and osteoporosis are at greater risk of falling. The aim of this study was to evaluate posture and postural control among elderly women with and without osteoporosis. DESIGN AND SETTING: Cross-sectional study conducted at the Physical Therapy and Electromyography Laboratory, School of Medicine, Universidade de São Paulo (USP). METHODS: Sixty-six elderly women were selected from the bone metabolism disorders clinic, Division of Rheumatology, USP, and were divided into two groups: osteoporosis and controls, according to their bone mineral density (BMD). Postural control was assessed using the Limits of Stability (LOS) test and the Modified Clinical Test of Sensory Interaction and Balance (CTSIBm) and posture, using photometry. RESULTS: The elderly women with osteoporosis swayed at higher velocity on a stable surface with opened eyes (0.30 versus 0.20 degrees/second; P = 0.038). In both groups, the center of pressure (COP) was at 30% in the LOS, but with different placements: 156° in the osteoporosis group and 178° in the controls (P = 0.045). Osteoporosis patients fell more than controls did (1.0 versus 0.0; P = 0.036). CONCLUSIONS: The postural control in elderly women with osteoporosis differed from that of the controls, with higher sway velocity and maximum displacement of COP. Despite postural abnormalities such as hyperkyphosis and forward head, the COP position was posteriorized.

scholarly journals The Effect of Fatigue on Single-Leg Postural Sway and Its Transient Characteristics in Healthy Young Adults

2021 ◽  
Vol 12 ◽  
Author(s):  
Žiga Kozinc ◽  
Nebojša Trajković ◽  
Darjan Smajla ◽  
Nejc Šarabon
Keyword(s):  
Postural Sway ◽  
Center Of Pressure ◽  
Transient Behavior ◽  
Quiet Standing ◽  
Medium Effect ◽  
Time Interval ◽  
Transient Characteristics ◽  
Change Of Direction ◽  
Additional Information ◽  
Before And After

Neuromuscular fatigue is known to impair balance ability, which is reflected in increased postural sway during quiet standing tasks. Recently, quantifying transient characteristics of postural sway has been suggested as an approach to obtain additional information regarding postural control. However, this approach is currently vastly unexplored. The purpose of this study was to investigate the effects of fatigue (induced by a repeated change of direction task) on postural sway and its transient characteristics during single-leg standing, including whole-trial estimates and indexes of transient behavior in young healthy active adults. The study involved 28 physically active students (14 females). Single-leg postural sway was recorded for 30s before and after a fatiguing protocol, which consisted of a repeated change of direction tasks. We calculated the traditional whole-trial estimates of postural sway [center-of-pressure (CoP) velocity and amplitude in anterior-posterior (AP) and medial-lateral (ML) directions] and corresponding transient behavior indexes, based on three 10-s intervals. Statistically significant sex×fatigue interaction with medium effect sizes was found for whole-trial CoP velocity in AP (p=0.028; η2=0.17) and ML directions (p=0.019; η2=0.19). Post-hoc test showed that both variables substantially decreased in female participants (p=0.041–0.045; d=0.54–0.56), but remained similar in males (p=0.194–0.294). There were small to medium statistically significant main effects of fatigue on transient index for CoP amplitude in both directions (p=0.042–0.049; η2=0.02–0.14). Notably, CoP AP amplitude increased in the first 10-s interval for males (before fatigue: 5.6±1.3mm; after fatigue: 6.3±1.6mm), while the CoP AP amplitude in the third interval remained similar after fatigue (before fatigue: 5.5±1.4mm; after fatigue: 5.1±1.2mm). In conclusion, the responses to fatigue in terms of postural sway were time interval specific, and there were certain sex-differences in responses to fatigue, which could be related to better ability to adapt balance strategies in females. Moreover, our results demonstrate that the indexes of transient behavior could perhaps detect smaller fatigue-induced changes in postural sway that are seen in whole-trial estimates.

scholarly journals The effect of hyper-pronated foot on postural control and ankle muscle activity during running and cutting movement

2020 ◽  
Vol 14 (4) ◽  
pp. 216-220
Author(s):  
Zahed Mantashloo ◽  
Heydar Sadeghi ◽  
Mehdi Khaleghi Tazji ◽  
Vanessa Rice ◽  
Elizabeth J Bradshaw
Keyword(s):  
Postural Control ◽  
Muscle Activity ◽  
Muscle Activation ◽  
Cross Sectional Study ◽  
The Body ◽  
Lateral Direction ◽  
Cross Sectional ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Ankle Muscle

Objective: The aim of this study was to examine the effect of hyper pronated foot on postural control and ankle muscle activity during running and cutting movement (v-cut). Methods: In this Cross-Sectional study, 42 young physically active (exercising three times per week regularly) males participated in this study, including 21 with hyper-pronated feet and 21 with normal feet. Each participant completed a running and cutting task. Body postural control was measured using a force platform (1000Hz) which was synchronized with surface electromyography of selected ankle muscles. MATLAB software was used to process and analyze the data. One-away ANOVA was used to identify any differences between groups. Results: Differing muscle activation patterns in the surrounding ankle musculature (tibialis anterior, peroneus longus) through to reduced postural stability in the medial-lateral direction and increased vertical ground reaction forces were observed between groups. Conclusion: According to the obtained results it seems that subtalar hyper-pronation can be regarded as a factor affecting the biomechanics of cutting by changing activation patterns of the muscles surrounding the ankle, and reducing postural control of the body in medial-lateral direction, but not in anterior-posterior direction.

scholarly journals Laterality of Stance during Optic Flow Stimulation in Male and Female Young Adults

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Michela Persiani ◽  
Alessandro Piras ◽  
Salvatore Squatrito ◽  
Milena Raffi
Keyword(s):  
Postural Control ◽  
Optic Flow ◽  
Visual Stimulation ◽  
Center Of Pressure ◽  
The Body ◽  
Body Sway ◽  
Men And Women ◽  
Temporal Properties ◽  
Flow Stimulation ◽  
The Right

During self-motion, the spatial and temporal properties of the optic flow input directly influence the body sway. Men and women have anatomical and biomechanical differences that influence the postural control during visual stimulation. Given that recent findings suggest a peculiar role of each leg in the postural control of the two genders, we investigated whether the body sway during optic flow perturbances is lateralized and whether anteroposterior and mediolateral components of specific center of pressure (COP) parameters of the right and left legs differ, reexamining a previous experiment (Raffi et al. (2014)) performed with two, side-by-side, force plates. Experiments were performed on 24 right-handed and right-footed young subjects. We analyzed five measures related to the COP of each foot and global data: anteroposterior and mediolateral range of oscillation, anteroposterior and mediolateral COP velocity, and sway area. Results showed that men consistently had larger COP parameters than women. The values of the COP parameters were correlated between the two feet only in the mediolateral axis of women. These findings suggest that optic flow stimulation causes asymmetry in postural balance and different lateralization of postural controls in men and women.

scholarly journals Balance Performance across the Lifespan Assessed by the Leonardo Mechanograph®: A Cross-Sectional Study

2019 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Wiegmann ◽  
Felsenberg ◽  
Gast ◽  
Börst ◽  
Armbrecht ◽  
...  
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Cross Sectional Study ◽  
Analysis Of Covariance ◽  
Normative Values ◽  
Age Group ◽  
Sectional Study ◽  
Balance Performance ◽  
Cross Sectional ◽  
Age And Sex

Reference values of sway parameters have not been published for the Leonardo mechanograph® so far. The aim of this cross-sectional study was to determine normative values on postural control measured by the force plate Leonardo Mechanograph® and to analyze the influence of age and sex on balance performance. A set of standardized standing positions with eyes opened (Romberg, semi-tandem, tandem, unipedal standing) was carried out. Analysis of covariance (ANCOVA) was used to detect age-and sex-related differences in center of pressure (COP) parameters (path length, velocity, elliptical area, anterior-posterior, and medio-lateral directions). Measurements were available for 570 subjects aged 20–86 years. Statistical analysis showed a high effect of age group on postural control (partial n² between 0.1 and 0.4) with a U-shaped dependency between postural control and age for all area- and path-related COP parameters, with the largest sway in the youngest (aged 20–40) and the oldest age group (aged 60–86). For velocity of COP, a linear deterioration with increasing age was found. Medio-lateral components of COP are likely to indicate the extent of postural control. Significant sex differences were not clearly supported by current findings. Age- and sex-related normative values are a useful resource for diagnostic, research, and training.

scholarly journals Postural control of size of the feet of children in school age

2020 ◽  
pp. 1-4
Author(s):  
Daniela Fernanda Esteves De Andrade ◽  
Jessica Caroliny De Jesus Neves ◽  
Dirce Shizuko Fujisawa
Keyword(s):  
Postural Control ◽  
Cross Sectional Study ◽  
Personal Identification ◽  
The Body ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Intrinsic Factors ◽  
Tape Measure ◽  
Minute Interval ◽  
The Right

Introduction: Postural control is the interaction between the systems, the central nervous and the musculoskeletal, based on information from the system somatosensory, vestibular and visual, to capture and control the body segments, alignments and movements. The studies reporting that data the anthropometric influence on the postural control, among the findings arte the characteristics of the feet, such as foot size and type. The gold standard instrument of evaluation of postural control is the force platform (PF). Objective: To determine the correlation between postural control and the length of the feet in students with eight years old. Method: Cross-sectional Study with convenience sample with students enrolled in schools of the city of Londrina/PR. The collection consisted of personal identification, anthropometric data, and assessment of postural control on the FP. The body mass was obtained by means of weighing on a digital scale, stature was measured using a tape measure and the length of the feet was measured by means of a tape measure positioned in the calcaneus until the end of the first finger. The evaluation of the postural control was in unipodal support, 30 seconds permanence, three attempts with one-minute interval between them. Results: We evaluated 346 school, 180 (52%) female and 166 (48%) were male. Leg preference was to the right on 224 (64.7%), and the median length of feet was of 0.21 (0.21/0.22) (m). The children presented themselves in the position one-leg area of the COP 13.41±6.77 (cm2 ). The correlation of COP with size of the feet has been identified, but considered to be low (p=0.000 and r= 0.224). Conclusion: The correlation between the postural control and the length of the feet was low, since the complex mechanism in which other intrinsic factors and extrinsic are also able to influence it.

scholarly journals Chemotherapy-induced peripheral neuropathy: longitudinal analysis of predictors for postural control

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jana Müller ◽  
Charlotte Kreutz ◽  
Steffen Ringhof ◽  
Maximilian Koeppel ◽  
Nikolaus Kleindienst ◽  
...  
Keyword(s):  
Peripheral Neuropathy ◽  
Peripheral Nerve ◽  
Postural Control ◽  
Action Potentials ◽  
Exercise Intervention ◽  
Cross Sectional Study ◽  
Nerve Function ◽  
Cross Sectional ◽  
Peripheral Nerve Function

AbstractImpaired postural control is often observed in response to neurotoxic chemotherapy. However, potential explanatory factors other than chemotherapy-induced peripheral neuropathy (CIPN) have not been adequately considered to date due to primarily cross-sectional study designs. Our objective was to comprehensively analyze postural control during and after neurotoxic chemotherapy, and to identify potential CIPN-independent predictors for its impairment. Postural control and CIPN symptoms (EORTC QLQ-CIPN20) were longitudinally assessed before, during and three weeks after neurotoxic chemotherapy, and in three and six months follow-up examinations (N = 54). The influence of peripheral nerve function as determined by nerve conduction studies (NCS: compound motor action potentials (CMAP) and sensory action potentials (SNAP)), physical activity, and muscle strength on the change in postural control during and after chemotherapy was analyzed by multiple linear regression adjusted for age and body mass index. Postural control, CIPN signs/symptoms, and CMAP/SNAP amplitudes significantly deteriorated during chemotherapy (p < .01). During follow-up, patients recovered from postural instabilities (p < .01), whereas CIPN signs/symptoms and pathologic NCS findings persisted compared to baseline (p < .001). The regression model showed that low CMAP and high SNAP amplitudes at baseline predicted impairment of postural control during but not after chemotherapy. Hence, pre-therapeutically disturbed somatosensory inputs may induce adaptive processes that have compensatory effects and allow recovery of postural control while CIPN signs/symptoms and pathologic peripheral nerve function persist. Baseline NCS findings in cancer patients who receive neurotoxic chemotherapy thus might assist in delineating individual CIPN risk profiles more precisely to which specific exercise intervention programs could be tailor-made.

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