Correlation Between Poststroke Balance Function and Brain Symmetry Index in Sitting and Standing Postures

2021 ◽  
Author(s):  
Ningning Wang ◽  
Jun Liang ◽  
Hengyu Zhang ◽  
Chunxiao Wan ◽  
Shizhong Liu ◽  
...  
Keyword(s):  
Balance Function ◽  
Symmetry Index

The factors affecting balance function in patients with osteoporotic vertebral fractures

2019 ◽  
Author(s):  
Larisa Marchenkova ◽  
Ekaterina Makarova ◽  
Mikhail Eryomushkin ◽  
Lilia Shakurova
Keyword(s):  
Vertebral Fractures ◽  
Balance Function ◽  
Factors Affecting ◽  
Osteoporotic Vertebral Fractures

scholarly journals Orbit Entropy and Symmetry Index Revisited

Mathematics ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1086
Author(s):  
Maryam Jalali-Rad ◽  
Modjtaba Ghorbani ◽  
Matthias Dehmer ◽  
Frank Emmert-Streib
Keyword(s):  
Information Content ◽  
Individual Component ◽  
Symmetry Index

The size of the orbits or similar vertices of a network provides important information regarding each individual component of the network. In this paper, we investigate the entropy or information content and the symmetry index for several classes of graphs and compare the values of this measure with that of the symmetry index of certain graphs.

Limb Preference Impacts Single‐Leg Forward Hop Limb Symmetry Index (LSI) Values Following ACL Reconstruction

2021 ◽  
Author(s):  
Brooke Farmer ◽  
Dillon Anderson ◽  
Dimitrios Katsavelis ◽  
Jennifer J. Bagwell ◽  
Kimberly A. Turman ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Symmetry Index ◽  
Limb Symmetry Index

scholarly journals Spatio-temporal gait parameters obtained from foot-worn inertial sensors are reliable in healthy adults in single- and dual-task conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
J. Soulard ◽  
J. Vaillant ◽  
R. Balaguier ◽  
N. Vuillerme
Keyword(s):  
Dual Task ◽  
Inertial Sensors ◽  
Healthy Adults ◽  
Gait Symmetry ◽  
Symmetry Index ◽  
Task Effects ◽  
Gait Parameters ◽  
Task Conditions ◽  
Healthy Participants ◽  
Absolute Reliability

AbstractInertial measurement units (IMUs) are increasingly popular and may be usable in clinical routine to assess gait. However, assessing their intra-session reliability is crucial and has not been tested with foot-worn sensors in healthy participants. The aim of this study was to assess the intra-session reliability of foot-worn IMUs for measuring gait parameters in healthy adults. Twenty healthy participants were enrolled in the study and performed the 10-m walk test in single- and dual-task ('carrying a full cup of water') conditions, three trials per condition. IMUs were used to assess spatiotemporal gait parameters, gait symmetry parameters (symmetry index (SI) and symmetry ratio (SR)), and dual task effects parameters. The relative and the absolute reliability were calculated for each gait parameter. Results showed that spatiotemporal gait parameters measured with foot-worn inertial sensors were reliable; symmetry gait parameters relative reliability was low, and SR showed better absolute reliability than SI; dual task effects were poorly reliable, and taking the mean of the second and the third trials was the most reliable. Foot-worn IMUs are reliable to assess spatiotemporal and symmetry ratio gait parameters but symmetry index and DTE gait parameters reliabilities were low and need to be interpreted with cautious by clinicians and researchers.

Behavioral measures and EEG monitoring using the Brain Symmetry Index during the Wada test in children

2012 ◽  
Vol 23 (3) ◽  
pp. 247-253 ◽  
Author(s):  
Jurriaan M. Peters ◽  
Meritxell Tomas-Fernandez ◽  
Michel J.A.M. van Putten ◽  
Tobias Loddenkemper
Keyword(s):  
Eeg Monitoring ◽  
Wada Test ◽  
Behavioral Measures ◽  
Symmetry Index ◽  
The Brain

Balance-related efficacy compared with balance function in patients with acute stroke

2008 ◽  
Vol 24 (2) ◽  
pp. 105-111 ◽  
Author(s):  
Wania Engberg ◽  
Agneta Lind ◽  
Annika Linder ◽  
Lena Nilsson ◽  
Ninni Sernert
Keyword(s):  
Acute Stroke ◽  
Balance Function

scholarly journals Relationship between Asymmetry of Gait and Muscle Torque in Patients after Unilateral Transfemoral Amputation

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Alicja Rutkowska-Kucharska ◽  
Mateusz Kowal ◽  
Sławomir Winiarski
Keyword(s):  
Hip Joint ◽  
Reaction Force ◽  
Transfemoral Amputation ◽  
Gait Symmetry ◽  
Symmetry Index ◽  
Muscle Torque ◽  
Effective Form ◽  
Gait Asymmetry ◽  
Torque Values ◽  
Therapy Programme

Many studies have shown that unilateral transfemoral amputation involves asymmetric gait. Transfemoral amputation leads to muscle atrophy in a tight stump resulting in asymmetry in muscle torque between the amputated and intact limb. This research is aimed at verifying if a relationship between torque values of hip joint flexors and extensors and gait asymmetry in patients with TFA exists. Fourteen adult subjects with unilateral TFA took part in the experiment. Gait symmetry was evaluated based on the ground reaction force (GRF). Measurements of muscle torque of hip flexors and extensors were taken with a Biodex System. All measurements were taken under isokinetic (60°/s and 120°/s) and isometric conditions. The symmetry index of vertical GRF components was from 7.5 to 11.5%, and anterio-posterior GRF from 6.2 to 9.3%. The symmetry index for muscle torque was from 24.3 to 44% for flexors, from 39 to 50.5% for extensors, and from 28.6 to 50% in the flexor/extensor ratio. Gait asymmetry correlated with muscle torque in hip joint extensors. Therapy which enhances muscle torque may be an effective form of patient therapy. The patient needs to undergo evaluation of their muscle strength and have the therapy programme adjusted to their level of muscle torque deficit.

scholarly journals Hop Testing Provides a Reliable and Valid Outcome Measure During Rehabilitation After Anterior Cruciate Ligament Reconstruction

2007 ◽  
Vol 87 (3) ◽  
pp. 337-349 ◽  
Author(s):  
Andrea Reid ◽  
Trevor B Birmingham ◽  
Paul W Stratford ◽  
Greg K Alcock ◽  
J Robert Giffin
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Outcome Measure ◽  
Cruciate Ligament ◽  
Measurement Properties ◽  
Global Rating ◽  
Symmetry Index ◽  
Limb Symmetry Index ◽  
Hop Tests ◽  
Anterior Cruciate

Background and Purpose Although various hop tests have been proposed as performance-based outcome measures following anterior cruciate ligament (ACL) reconstruction, limited reports of their measurement properties exist. The purpose of this study was to investigate the reliability and longitudinal validity of data obtained from hop tests during rehabilitation after ACL reconstruction. Subjects Forty-two patients, 15 to 45 years of age, who had undergone ACL reconstruction participated in the study. Methods and Measures The study design was prospective and observational with repeated measures. The subjects performed a series of 4 hop tests on 3 separate occasions within the 16th week following surgery and on a fourth occasion 6 weeks later. The tests were a single hop for distance, a 6-m timed hop, a triple hop for distance, and crossover hops for distance. Performance on the ACL-reconstructed limb was expressed as a percentage of the performance on the nonoperative limb, termed the “limb symmetry index.” Subjects also completed the Lower Extremity Functional Scale and a global rating of change questionnaire. Results Intraclass correlation coefficients for limb symmetry index values ranged from .82 to .93. Standard errors of measurement were 3.04% to 5.59%. Minimal detectable changes, at the 90% confidence level, were 7.05% to 12.96%. Changes in hop test scores on the operative limb were statistically greater than changes on the nonoperative limb. Pearson correlations (r) between change in hop performances and self-reported measures ranged from .26 to .58. Discussion and Conclusion The results show that the described series of hop tests provide a reliable and valid performance-based outcome measure for patients undergoing rehabilitation following ACL reconstruction. These findings support the use and facilitate the interpretation of hop tests for research and clinical practice.

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