The roles of lower-limb joint proprioception in postural control during gait

2022 ◽  
Vol 99 ◽  
pp. 103635
Author(s):  
Xingda Qu ◽  
Xinyao Hu ◽  
Jun Zhao ◽  
Zhong Zhao
Keyword(s):  
Postural Control ◽  
Lower Limb

scholarly journals Effectiveness of Virtual Reality and Visual Feedback on Balance and Leg Function in Children with Cerebral Palsy

2019 ◽  
Vol 1 (18) ◽  
Author(s):  
Arūnė Dūdaitė ◽  
Vilma Juodžbalienė
Keyword(s):  
Virtual Reality ◽  
Cerebral Palsy ◽  
Postural Control ◽  
Range Of Motion ◽  
Visual Feedback ◽  
Lower Limb ◽  
Dynamic Balance ◽  
Control Group ◽  
Children With Cerebral Palsy ◽  
Stretching Exercises

Research background. Virtual reality and visual feedback improve motor performance, motor function and balance, so we want to fnd if it affects the function of legs and balance of children with spastic hemiplegia. Research aim was to establish if the use of virtual reality and visual feedback with traditional physiotherapy improve the function of legs and balance of children with cerebral palsy. Methods. Nine children with cerebral palsy participated in the research. Participants were randomly divided into two groups – virtual reality group (n = 6) and control (n = 3). Virtual reality group practised exergaming and stretching exercises for 10 weeks, twice a week. Control group practiced conventional physiotherapy and stretching exercises for 6 weeks, twice a week. We measured the range of motion of the lower limb, spasticity of the lower limb using Modifed Ashworth’o Scale, static, dynamic balance, trunk coordination using Trunk Impairment Scale at the start and the end of the research, and balance using Pediatric Balance Scale. Results. Virtual reality and visual feedback reduced the spasticity of the lower limb, improved balance and postural control for children with cerebral palsy, but it did not improve the range of motion of the lower limb of children with cerebral palsy. Conclusions. Virtual reality and visual feedback did not improve the range of motion of the lower limb of children with cerebral palsy. Virtual reality and visual feedback reduced spasticity of the lower limb, improved balance and postural control for children with cerebral palsy.Keywords. Cerebral palsy, virtual reality, visual feedback, postural control, muscle architecture.

scholarly journals The acute effect of knee brace on the electromyography activity of lower limb muscles in individuals with genu valgus during walking

2021 ◽  
Vol 43 (1) ◽  
pp. 116-123
Author(s):  
AmirAli Jafarnezhadgero ◽  
Farshad Ghorbanloo ◽  
Arefeh Mokhtari Malekabadi ◽  
Sadegh Ghasemi
Keyword(s):  
Postural Control ◽  
Electrical Activity ◽  
Lower Limb ◽  
Acute Effect ◽  
Knee Brace ◽  
Semitendinosus Muscle ◽  
Significance Level ◽  
Lower Limb Muscles ◽  
Limb Muscles ◽  
Walking Biomechanics

Background: Different factors affect walking biomechanics disturb the postural control. Genu valgus is one of the most important lower limb malalignments that affects the postural control and disrupts the posture. The purpose of the present study was to investigate the acute effect of knee brace on the electromyography activity of lower limb muscles in individuals with genu valgus during walking. Methods: In this semi-experimental and a laboratory typ study,. 24 boys with genu valgum (20-30 years old) volunteered to participate in the study. The electrical activity of the selected muscles was recorded by an electromyography system during walking with and without knee brace. Paired t-test was used for statistical analysis at a significance level of 0.05. Results: There was a significant increase in electrical activity of the semitendinosus muscle during walking with knee brace compared to walking without it (p = 0.037, d = 0.89). The electrical activity of other lower limb muscles did not show any significant differences during acute use of knee brace (P >0.05). Conclusion: The semitendinosus muscle in individuals with genu valgus is weak. Therefore, significant increase in the electrical activity of the semitendinosus muscle during wearing of knee brace means delaying the fatigue and indicating improvement in the muscular function.

Contribution of cognitive functions to postural control in anticipating self-paced and externally-triggered lower-limb perturbations

2019 ◽  
Vol 366 ◽  
pp. 56-66 ◽  
Author(s):  
Federico Quinzi ◽  
Marika Berchicci ◽  
Rinaldo Livio Perri ◽  
Valentina Bianco ◽  
Luciana Labanca ◽  
...  
Keyword(s):  
Postural Control ◽  
Cognitive Functions ◽  
Lower Limb

Changes in postural control strategy during quiet standing in individuals with knee osteoarthritis

2021 ◽  
pp. 1-8
Author(s):  
Kento Sabashi ◽  
Satoshi Kasahara ◽  
Harukazu Tohyama ◽  
Takeshi Chiba ◽  
Yuta Koshino ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Angular Velocity ◽  
Postural Control ◽  
Knee Osteoarthritis ◽  
Lower Limb ◽  
Center Of Mass ◽  
Three Dimensional ◽  
Quiet Standing ◽  
Control Group ◽  
Knee Oa

BACKGROUND: Knee osteoarthritis (OA) impairs postural control and may be affected by how the lower limb joints are used. OBJECTIVE: To investigate how individuals with knee OA use lower limb joints for static postural control. METHODS: Ten patients with knee OA and thirteen healthy controls performed quiet standing for 30 s. The standard deviation of the center of mass (COM) and lower limb joint motions in the anterior-posterior (AP) and medial-lateral (ML) planes were calculated from three-dimensional marker trajectories. Pearson’s correlation analysis and independent t-tests were conducted to investigate the relationship between COM and lower limb joint motion and to compare group difference, respectively. RESULTS: The AP hip angular velocity alone in the knee OA group and the AP hip and knee angular velocity in the control group were significantly correlated with the AP COM velocity. The ML hip angular velocity was significantly correlated with the ML COM velocity in both groups. The knee OA group exhibited a significantly larger standard deviation of AP COM velocity than the control group. CONCLUSIONS: Individuals with knee OA depended solely on the contribution of the hip to the AP COM velocity, which could not be successfully controlled by the knee.

Comparative Effects of Tensioning and Sliding Neural Mobilization on Static Postural Control and Lower Limb Hop Testing in Football Players

2019 ◽  
Vol 28 (8) ◽  
pp. 840-846 ◽  
Author(s):  
Jessica Ferreira ◽  
André Bebiano ◽  
Daniel Raro ◽  
João Martins ◽  
Anabela G. Silva
Keyword(s):  
Nervous System ◽  
Postural Control ◽  
Lower Limb ◽  
Functional Performance ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Force Plate ◽  
Normal Function ◽  
Football Players ◽  
Hop Test

Context: Sliding and tensioning neural mobilization are used to restore normal function of the nervous system, but they impose different stresses on it. Particularly, sliding induces greater nerve excursion than tensioning. Conceivably, they might impact nervous system function differently. Objective: To compare the effects of tensioning neural mobilization versus sliding neural mobilization of the dominant lower limb on static postural control and hop testing. Design: Randomized, parallel and double blinded trial. Setting/Participants: Thirty-seven football players. Intervention(s): Participants were randomized into 2 groups: sliding neural mobilization (n = 18) or tensioning neural mobilization (n = 19) targeting the tibial nerve. Main Outcome Measures: Static postural sway was assessed with a force plate and functional performance with hop tests. Measurements were taken at baseline, after the intervention, and at 30-minute follow-up. Results: There was a significant effect of time for the center of pressure total displacement and velocity (P < .05), for the single-leg hop test (P < .05), the 6-m timed hop test (P < .05), and the cross-over hop test (P < .05), but no significant effect of the intervention. Conclusions: Sliding and tensioning neural mobilization improved postural control and hop testing in football players, and improvements remained 30 minutes after the intervention. Additional research examining the influence of neural mobilization on sensory motor impairments, postural control, and functional performance is needed.

scholarly journals Game Exposure, Player Characteristics, and Neuromuscular Performance Influence Injury Risk in Professional and Youth Field Hockey Players

2021 ◽  
Vol 9 (4) ◽  
pp. 232596712199516
Author(s):  
Joel Mason ◽  
Kai Wellmann ◽  
Andreas Groll ◽  
Klaus-Michael Braumann ◽  
Astrid Junge ◽  
...  
Keyword(s):  
Postural Control ◽  
Lower Limb ◽  
Injury Risk ◽  
Training Programs ◽  
Field Hockey ◽  
Lower Limb Injury ◽  
Neuromuscular Performance ◽  
Risk Of Injury ◽  
Modifiable Factors ◽  
Hockey Players

Background: Identifying factors that contribute to the occurrence of injury is an important step in designing training programs to minimize the risk of injury. However, despite high injury rates, variables contributing to injury in field hockey players remain relatively unexplored. Purpose: To identify factors that may predict injury in professional and youth field hockey players. Study Design: Cohort study; Level of evidence, 2. Method: Professional and youth hockey players completed preseason neuromuscular performance testing and were monitored for injuries, training, and game exposure throughout the subsequent 12-month indoor and outdoor hockey season. Least absolute shrinkage and selection operator analysis was conducted to identify injury risk factors. Receiver operating characteristic curves were then calculated to determine the individual predictive accuracy of the identified variables. Results: A total of 83 players (mean ± SD age, 20.7 ± 4.9 years; 34.9% female) with complete performance, injury, and exposure data were included for data analysis. Almost half of players (44.6%) sustained a time-loss injury during the season, and 73% of these injuries occurred in the lower limb. Playing more games and having an older age, asymmetrical and poor dynamic postural control, and better explosive performance were identified as jointly influencing the risk of injury. When considered individually, number of games played throughout the season was the most accurate predictor of injury risk (area under the curve [AUC] = 0.74; P < .001), while asymmetrical and poor dynamic postural control (AUCs = 0.61-0.65; P = .01-.04) and better explosive athletic performance (AUCs = 0.65-0.67; P < .01) were identified as moderate individual predictors of sustaining a general or lower limb injury. Conclusion: A number of modifiable factors were individually and jointly associated with an increased injury risk in field hockey players, providing initial evidence for the design of targeted and sport-specific training programs to mitigate the risk of injury.

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