Analysis of Passive Dynamic Gait of Tensegrity Robot

Background and PurposePeople with balance disorders often have difficulty walking. The purpose of this study was to develop and test the psychometric properties of a short form of the Dynamic Gait Index (DGI) for the clinical measurement of walking function in people with balance and vestibular disorders. Subjects. A total of 123 subjects with such disorders (test subjects) and 103 control subjects were included in this study. Methods. Rasch and factor analyses were used to create a short form of the DGI. Internal consistency and discriminative validity for test subjects versus control subjects and for falling versus nonfalling test subjects were evaluated. Results. Four items were selected for the shorter version of the test: gait on level surfaces, changes in gait speed, and horizontal and vertical head turns. Discussion and Conclusion. The clinical psychometric properties of the 4-item DGI were equivalent or superior to those of the 8-item test. The 4-item DGI can be used by clinicians to measure gait in people with balance and vestibular disorders without compromising important clinical measurement characteristics.

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Measures of adult general performance tests: The Berg Balance Scale, Dynamic Gait Index (DGI), Gait Velocity, Physical Performance Test (PPT), Timed Chair Stand Test, Timed Up and Go, and Tinetti Performance-Oriented Mobility Assessment (POMA)

Arthritis & Rheumatism ◽

10.1002/art.11411 ◽

2003 ◽

Vol 49 (S5) ◽

pp. S28-S42 ◽

Cited By ~ 46

Author(s):

Karen W. Hayes ◽

Marjorie E. Johnson

Keyword(s):

Performance Test ◽

Berg Balance Scale ◽

Gait Velocity ◽

Performance Tests ◽

Physical Performance Test ◽

Timed Up And Go ◽

Chair Stand ◽

Mobility Assessment ◽

Dynamic Gait Index ◽

Dynamic Gait

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Clinical Measurement of Sit-to-Stand Performance in People With Balance Disorders: Validity of Data for the Five-Times-Sit-to-Stand Test

Physical Therapy ◽

10.1093/ptj/85.10.1034 ◽

2005 ◽

Vol 85 (10) ◽

pp. 1034-1045 ◽

Cited By ~ 338

Author(s):

Susan L Whitney ◽

Diane M Wrisley ◽

Gregory F Marchetti ◽

Michael A Gee ◽

Mark S Redfern ◽

...

Keyword(s):

Clinical Decision Making ◽

Clinical Decision ◽

Balance Disorders ◽

Stand Test ◽

Balance Confidence ◽

Sit To Stand ◽

Dynamic Gait Index ◽

Dynamic Gait ◽

Confidence Scale ◽

Better Than

Abstract Background and Purpose. People with balance disorders are characterized as having difficulty with transitional movements, such as the sit-to-stand movement. A valid and feasible tool is needed to help clinicians quantify the ability of people with balance disorders to perform transitional movements. The purpose of this study was to describe the concurrent and discriminative validity of data obtained with the Five-Times-Sit-to-Stand Test (FTSST). The FTSST was compared with the Activities-specific Balance Confidence Scale (ABC) and the Dynamic Gait Index (DGI). Subjects and Methods. Eighty-one subjects without balance disorders and 93 subjects with balance disorders were recruited for the study. Each subject was asked to stand from a 43-cm-high chair 5 times as quickly as possible. The ABC and DGI scores were recorded. Results. Subjects with balance disorders performed the FTSST more slowly than subjects without balance disorders. Discriminant analysis demonstrated that the FTSST correctly identified 65% of subjects with balance dysfunction, the ABC identified 80%, and the DGI identified 78%. The ability of the FTSST to identify subjects with balance dysfunction was better for subjects younger than 60 years of age (81%). Discussion and Conclusion. The FTSST displays discriminative and concurrent validity properties that make this test potentially useful in clinical decision making, although overall the ABC and the DGI are better than the FTSST at discriminating between subjects with and subjects without balance disorders.

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Dynamic Gait Parameters in Patients with Nonunion of the Tibia Following Treatment with the Ilizarov Method

Journal of Biomechanical Engineering ◽

10.1115/1.4051432 ◽

2021 ◽

Author(s):

Andzelika Pajchert Kozlowska ◽

Lukasz Pawik ◽

Lukasz Szelerski ◽

Slawomir Zarek ◽

Radoslaw Górski ◽

...

Keyword(s):

Maximum Force ◽

Control Group ◽

Ilizarov Method ◽

Dynamic Parameters ◽

Symmetrical Distribution ◽

Gait Parameters ◽

Tibial Nonunion ◽

Parameter Values ◽

Dynamic Gait ◽

Experimental Group

Abstract INTRODUCTION: The purpose of this study was a comprehensive assessment of the dynamic parameters of gait in patients who underwent Ilizarov treatment for nonunion of the tibia. MATERIALS AND METHODS: The experimental group consisted of24 individuals treated with the Ilizarov method for nonunion of the tibia.The control group comprised31healthy individuals,matched for BMI,sex,and age.The dynamic gait parameters in patients and in the control group were measured with a Zebris pedobarographic platform. RESULTS: The treatment group and the control group showed statistically significant differences in terms of the following gait parameters:Maximum force 1NOL(non-operated-limb),Time maximum force1OL(operated-limb),Time maximum force 1 NOL,Maximum force 2NOL,Time maximum force 2OL,and Maximum force forefoot OL.Most of the evaluated gait parameters were bilaterally similar in patients group.The only significant differences between the operated and non-operated limb were seen in terms of Time maximum force 2and Maximum force forefoot. CONCLUSIONS: The most pronounced abnormalities in dynamic gait parameters were observed in the forefoot.The patients treated with the Ilizarov method did not achieve a complete normalization of dynamic gait parameters,as their gait parameters did not equal those measured in the control group.The Ilizarov method for the treatment of tibial nonunion helps restore a symmetrical distribution of gait parameter values between the affected limb and the healthy limb.Patients with tibial nonunion treated with the Ilizarov method continue to show some abnormalities in their dynamic gait parameters after treatment.

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