Reliability and Validity Studies of Biometrics Ltd Sensors and Instrumentation
Keywords: Dynamometer Arthritis Grip Requirements Reliability Clinical Applications Canada 2015
Cynthia S. Srikesavan, Barabara Shay, Tony Szturm. The Open Orthopaedics Journal 2015; 9: 57-67
The Biometrics Ltd Dynamometer is used to determine the Grip Strength of subjects suffering from Arthritis. The Grip Strength data is presented together with the outcomes of the new hand function test designed specifically for people with arthritis, the Grip Strength data is also applied to the final analysis showing test-retest reliability.
Keywords: Grip Dynamometer Reliability Validity Test-Retest UE Australia 2011
D Allen, F Barnett; International Journal of Therapy and Rehabilitation 18(5)258-265 (May 2011)
The purpose of this study was to establish the concurrent validity and test-retest reliability of the Biometrics electronic Dynamometer, and compare it with the criterion standard hydraulic Jamar dynamometer for measurement of grip strength among healthy participants. Conclusions in the results discussion include: "The concurrent validity between the Biometrics and Jamar Dynamometers was found to be excellent for both the right (0.986) and left hands (0.983),and indicates that both the Jamar and Biometrics dynamometers measure the same construct of grip strength. Results also indicate that the Biometrics Dynamometer is a valid tool for measuring grip strength." and "Electronic Dynamometers also have increased sensitivity to applied force, which therefore enables electronic Dynamometers, such as the Biometrics to record low grip strength that may not have registered on the Jamar." The Practical implications state: "This study has established that the Biometrics E-LINK evaluation system is a valid and reliable measurement tool to use by rehabilitation professionals."
Keywords: Grip Dynamometer Reliability Strength Arthritis UE UK 2010
D Kennedy, C Jerosch-Herold, M Hickson; Journal of Hand Therapy Oct-Dec 2010; 23:384-391
A Biometrics Ltd Dynamometer was used to measure the test-retest reliability of one vs. three trials. The Implications for Practice included: "The results of this study demonstrate levels of test-retest reliability (ICC -0.91) for the evaluation of one and the mean of three trials of pain-free grip strength tested using the Biometrics E-LINK evaluation system in participants with RA....A change in grip strength as small as 1.6 kg may be indicative of meaningful clinical change in RA patients; therefore, grip should be evaluated with an instrument with adequate sensitivity to detect this magnitude of change."
Keywords: DataLINK Electrogoniometers Reliability Validity Spine Australia 2010
D Perriman J Scarvell, A Hughes, B Ashman, C Lueck, P Smith; SPINE, Volume 35, Number 14, pages E633 - E640
Biometrics Ltd electrogoniometer used with the Biometrics Ltd DataLINK was compared against the "gold standard" Cobb angle method in measurements of the thoracic spine. The results state that the Biometrics Ltd Goniometer "is accurate, has excellent test-retest reliability, and has concurrent validity compared with the Cobb angle. The Goniometer is therefore proposed as an ideal tool for the evaluation of interventions aimed at improving sagittal thoracic spine posture."
Keywords: Gonio SG150 DataLOG Analysis Biomechanics SW Knee Lower Extremity Clinical Applications Reliability Australia 2008
P Piriyaprasarth, M Morris, A Winter, A Bialocerkowski; Musculoskeletal Disorders 2008, 9:6
This study examined the inter- and intra-tester reliability of knee joint angle measurements using a Biometrics Ltd electrogoniometer. The clinical utility of electrogoniometry was also addressed. Data was collected using the Biometrics Ltd DataLOG and analyzed using Biometrics Ltd Analysis Software.
Keywords: SG110 Goniometer Veterinary Reliability Biomechanics USA 2006
Todd M. Thomas, Denis J. Marcellin-Little, Simon C. Roe, B. Duncan X. Lascelles, Bess P. Brosey. American Journal of Veterinary Research, Vol67, No. 12, December 2006
This study aims to confirm the differences between measuring joint angle using two Goniometer types; results undergo a final verification step with the help of radiography data. The Biometrics Ltd Goniometer represents one of the Goniometer types and is held against the specified joint of each subject (dog) in order to record the maximum flexion and extension of the joint, this is repeated using the alternate Goniometer. Results are compared within a statistical analysis and discussed.
Keywords: Gonio K100 DL1001 Biomechanics M180 Lower Extremity Knee Validity Gait UK 2001
PJ Rowe, CM Myles, SJ Hillmann, ME Hazlewood; Physiotherapy Sept 2001, vol 87, no9 :479-488
The measurement of the Biometrics Ltd flexible electrogoniometer were investigated using a series of controlled experiments including comparison to a TV motion analysis system while measuring knee movement during gait.
Keywords: Gonio Gait M180 Bilateral Knee Lower Extremity Reliability Clinical Applications Biomechanics Arthritis UK 2001
Movement of the knee in osteoarthritis: the use of electrogoniometry to assess function
This study 50 patients with knee osteoarthritis using Biometrics Ltd electrogoniometers concluded: 'Electrogoniometry is relatively inexpensive, can be performed in a normal clinical setting with minimal inconvenience to the patient, and may prove to be a valuable objective tool for comparative evaluation of different prostheses or surgical techniques for total knee replacement.?
Keywords: Gonio Knee Lower Extremity Clinical Applications Anatomy Biomechanics Reliability Poland 2000
P Szuic, J Lewandowski, B Marecki; Medical Science Monitor 2000, 7(2): 312-315
In this study Biometrics Ltd electrogoniometer was used as the accurate and reliable measurement to validate knee position measurements with a universal Goniometer.
Keywords: Gonio Ankle Lower Extremity Reliability Biomechanics UK USA 1996
K Rome, F Cowieson; Foot Ankle International 1996, Vol 17, No. 1, pp 28-32
This study investigated the reliability of three Goniometers, the universal, fluid, and Biometrics Ltd electrogoniometers, in the measurement of ankle dorsiflexion. Intra- and interobserver reliability were assessed using 10 healthy volunteers and five observers. The results demonstrate that when using a highly standardized procedure, the flexible electrogoniometer was within an accepted criterion for reliability, suggesting good intra device reliability.
Keywords: Gonio Wrist UE Biomechanics Clinical Applications Clinical Measurement Validity UK 1996
M Rawes, J Richardson, J Dias; Journal of Hand Surgery - British and European Volume 1996 21B(5): 600-603
A new electrogoniometer technique, using a Biometrics ltd electrogoniometer, is described for the measurement of wrist movements, including circumduction, with the results being displayed as figures. Clinical validation was performed and the system found to be highly accurate and reliable.
Keywords: Gonio Ankle Lower Extremity Clinical Applications Clinical Measurement Biomechanics Reliability UK 1993
P Ball, G Johnson; Clinical Biomechanics 1993; 8: 13-19
This paper describes the use of an Biometrics Ltd electrogoniometer for clinical assessment of subtalar motion and examines the important aspects of the clinical procedure.
Keywords: Gonio Elbow UE Reliability Clinical Applications Clinical Measurement UK 1992
J Goodwin, C Clark, J Deakes, D Burdon, C Lawrence; Disability and Rehabilitation 1992; Vol 14, No.1; pp 10-15
This investigation compared the reliability and interchangeable use of three currently available Goniometers - a universal Goniometer, a fluid Goniometer, and a Biometrics Ltd electrogoniometer. Three consecutive readings of the active range of movement of the right elbow joint were taken from each of 23 healthy female volunteers; three experienced observers each used each type of Goniometer on two occasions. Significant intertester differences were found to exist for both the universal and fluid Goniometers. However, no significant differences were found between any of the testers with respect to the electrogoniometer. It therefore appears reasonable to suggest that, with respect to reducing intertester differences, the electrogoniometer is preferable.
Keywords: Gonio Wrist UE Reliability Clinical Applications Circumduction Biomechanics Japan 1991
H Ojima, S Miyake, M Kumashiro, H Togami, S Meng, K Suzuki; Clinical Biomechanics 1991; 6: no 4; 221-229
This paper shows the reliability and validity of Biometrics Ltd biaxial electrogoniometric analysis in the quantification of wrist circumduction. The reliability tests demonstrated sufficient accuracy of the device. Also, validity of the measurement was recognized because the tests simulating wrist circumduction and cineradiography revealed that it could accurately detect the angle between the long axis of the forearm and the third metacarpal bone.
Keywords: Gonio Hip Knee Lower Extremity Clinical Clinical Applications Biomechanics Paediatrics Measurements Gait Reliability UK 1989
A Nicol; Clinical Rehabilitation 1989, 3: 1-9
This paper is about the development of the Biometrics Ltd electrogoniometer and its clinical applications: The device is very lightweight and the electrogoniometers can be worn beneath clothing, so the subject can move without inhibition. ...Tests using angular motion of the hip and knee joints...assessment of gait ...gait of amputees and patients cerebral palsy...assessing the postoperative performance of arthritic patients receiving the Souter-Strathclyde elbow prosthesis. It can be seen that electrogoniometers can provide information otherwise not available in a clinical environment.