Analysis of the reliability and validity of the kinetic communicator exercise device

Farrell, Martin J.; Richards, James G.

doi:10.1249/00005768-198602000-00009

Cited by 200 publications

(97 citation statements)

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“…The reliability and validity of isokinetic dynamometers (Kin-Com s , Cybex) has been examined in several studies, [37][38][39][40][41][42] from which it can be concluded that the resistive force values are highly reproducible for lowas well as high-angle velocities, and in able bodied as well as in individuals with cerebral palsy and SCL (Table 4).…”

Section: Reliability Of Isokinetic Dynamometer Measurementsmentioning

confidence: 99%

Spasticity-assessment: a review

2006

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Study design: Review of the literature on the validity and reliability of assessment of spasticity and spasms. Objectives: Evaluate the most frequently used methods for assessment of spasticity and spasms, with particular focus on individuals with spinal cord lesions. Setting: Clinic for Spinal Cord Injuries, Rigshospitalet, University Hospital of Copenhagen, and Department of Medical Physiology, University of Copenhagen, Denmark. Methods: The assessment methods are grouped into clinical, biomechanical and electrophysiological, and the correlation between these is evaluated. Results: Clinical methods: For assessment of spasticity, the Ashworth and the modified Ashworth scales are commonly used. They provide a semiquantitative measure of the resistance to passive movement, but have limited interrater reliability. Guidelines for the testing procedures should be adhered to. Spasm frequency scales seem not to have been tested for reliability. Biomechanical methods such as isokinetic dynamometers are of value when an objective quantitative measure of the resistance to passive movement is necessary. They play a minor role in the daily clinical evaluation of spasticity. Electrophysiological methods: These techniques have provided valuable insight to the pathophysiological mechanisms involved in spasticity, but none of these techniques provide an easy and reliable assessment of spasticity for use in the daily clinic. Conclusion: A combination of electrophysiological and biomechanical techniques shows some promise for a full characterization of the spastic syndrome. There is a need of simple instruments, which provide a reliable quantitative measure with a low interrater variability.

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Section: Reliability Of Isokinetic Dynamometer Measurementsmentioning

confidence: 99%

Spasticity-assessment: a review

2006

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“…This instrument has been shown to be accurate for position, velocity and force. [22][23] The calibration of the instrument was tested prior to the study with known weights and was accurate to within +/− 1 N. Three submaximal cycles and one maximal cycle was completed as practice on the Kin-Com as per Kramer's 25 protocol.…”

Section: Test Protocolmentioning

confidence: 99%

“…Recent studies have demonstrated that lower extremity strengthening programs with individuals with chronic stroke can have positive effects on gait performance, 10,12,13 stair climbing ability, 13 rising from a chair, 21 and quality of life. 13 Muscle performance has been commonly measured by isokinetic dynamometers as their instrumentation accuracy has been established 22,23 . In addition, excellent test-retest reliability has been achieved for flexion and extension motions of the ankle, knee and hip when using healthy adult individuals without any known pathology.…”

Section: Introductionmentioning

confidence: 99%

Reliability of lower extremity strength measures in persons with chronic stroke

Eng

Kim

MacIntyre

2002

Archives of Physical Medicine and Rehabilitation

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Objective-To determine the reliability of isokinetic concentric strength measures of both the hemiparetic and non-involved limbs for flexion and extension motions of the hip, knee, and ankle joints in individuals who have had a stroke.Design-Test-retest, repeated-measures intraobserver reliability design. Setting-Tertiary rehabilitation center.Participants-20 community-dwelling individuals who have had a stroke, with motor deficits ranging from 3 to 6 on the Chedoke-McMaster Stroke Assessment; volunteer sample. Interventions-Not applicable.Main Outcome Measures-Peak torque and average torque (ie, mean over the range of motion tested) from an ensemble-averaged (three trials) torque-angle curve during isokinetic concentric extension and flexion movements of the ankle, knee, and hip.Results-Although peak and average torque were significantly less for the hemiparetic limb compared with the non-involved limb, the intraclass correlation coefficients (ICCs) between the two test sessions were high (0.95-0.99 for peak torque, 0.88-0.98 for average torque) for both limbs for all 3 joints. However, there was a learning effect, as observed by the slightly greater values attained from the second test session.Conclusions-Peak and average isokinetic torque can be used to assess reliably lower extremity strength in persons with chronic stroke. Practice sessions may be required before the actual test to reduce the effect of learning.

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“…The Kin-Com Isokinetic Dynamometer has been shown to be accurate for position, velocity, and force. 30,31 The calibration of the instrument was tested before the study with known weights and was accurate to within ±1 N. All participants had a practice session 2 to 4 days before the actual testing day to reduce the learning effect as recommended by Eng et al 17 An angular velocity of 60°/s was initiated throughout their available range of motion (as assessed by their active range on the paretic side) for the isokinetic strength assessment. This velocity was selected because the majority of our participants had difficulty generating faster movements.…”

Section: Isokinetic Strength Of Lower Extremitiesmentioning

confidence: 99%

Effects of isokinetic strength training on walking in persons with stroke: A double-blind controlled pilot study

Kim

Eng

MacIntyre

et al. 2001

Journal of Stroke and Cerebrovascular Diseases

127

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Objectives-The goal most often stated by persons with stroke is improved walking function. The purpose of this study was to determine the effects of isokinetic strength training on walking performance, muscle strength, and health-related quality of life in survivors of chronic stroke.Methods-Twenty participants (age, 61.2 ± 8.4 years) with chronic stroke were randomized into 2 groups. The experimental group undertook maximal concentric isokinetic strength training, whereas the control group received passive range of motion of the paretic lower extremity 3 times a week for 6 weeks. The Kin-Com Isokinetic Dynamometer (Chattanooga Group Inc., TN) was used for both the strengthening and passive range of motion exercises. The Mann-Whitney U test was used to compare the changes in scores (postintervention minus baseline) between the control and experimental groups for a composite lower extremity strength score, walking speed (levelwalking and stair-walking) and health-related quality of life measure (36-Item Short Form Health Survey ).Results-Both the experimental and control groups increased their strength and walking speed postintervention; however, there were no differences in the changes in walking speed between the groups. There was a trend (P = .06) toward greater strength improvement in the experimental group compared with the control group. No changes in SF-36 scores were found in either group.Conclusions-Intervention aimed at increasing strength did not result in improvements in walking. The results of this study stress the importance of controlled clinical trials in determining the effect of specific treatment approaches. Strength training in conjunction with other task-related training may be indicated.

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Analysis of the reliability and validity of the kinetic communicator exercise device

Cited by 200 publications

References 0 publications

Spasticity-assessment: a review

Spasticity-assessment: a review

Reliability of lower extremity strength measures in persons with chronic stroke

Effects of isokinetic strength training on walking in persons with stroke: A double-blind controlled pilot study

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