OBJECTIVES: To establish the reliability, accuracy and concurrent validity of electrogoniometers for measuring extreme lower extremity movements. STUDY DESIGN: Reliability, accuracy and validity study. METHODS: This project employed two experiments. Investigation I determined electrogoniometer accuracy compared to a digital protractor. Investigation II compared electrogoniometers to a criterion measure, motion analysis, in sagittal plane dance movements in 17 dancers. Intraclass correlation coefficients (ICC) and standard error of measurement (SEM) were calculated for hip, knee, and ankle sagittal plane angular displacements. RESULTS: In Investigation I, electrogoniometer to protractor correlations were high (r > or = 0.998, SEM < or =3.65 degrees ). In Investigation II, instrument and intra-rater reliability correlations were high (r > or = 0.983 and r > or = 0.972, SEM < or = 3.49 degrees and < or =4.48 degrees ), as were concurrent validity correlations (r > or = 0.949, SEM < or =6.80 degrees ) to motion analysis. CONCLUSIONS: This error may be acceptable for lower extremity studies with extreme movements when motion capture is unavailable.
OBJECTIVES: To establish the reliability, accuracy and concurrent validity of electrogoniometers for measuring extreme lower extremity movements. STUDY DESIGN: Reliability, accuracy and validity study. METHODS: This project employed two experiments. Investigation I determined electrogoniometer accuracy compared to a digital protractor. Investigation II compared electrogoniometers to a criterion measure, motion analysis, in sagittal plane dance movements in 17 dancers. Intraclass correlation coefficients (ICC) and standard error of measurement (SEM) were calculated for hip, knee, and ankle sagittal plane angular displacements. RESULTS: In Investigation I, electrogoniometer to protractor correlations were high (r > or = 0.998, SEM < or =3.65 degrees ). In Investigation II, instrument and intra-rater reliability correlations were high (r > or = 0.983 and r > or = 0.972, SEM < or = 3.49 degrees and < or =4.48 degrees ), as were concurrent validity correlations (r > or = 0.949, SEM < or =6.80 degrees ) to motion analysis. CONCLUSIONS: This error may be acceptable for lower extremity studies with extreme movements when motion capture is unavailable.
Authors: Ali M Alshami; Tadhi K Alshammari; Mona I AlMuhaish; Tarek M Hegazi; Mahbubunnabi Tamal; Fuad A Abdulla Journal: J Ultrasound Date: 2021-05-25
Authors: Serena Maggioni; Alejandro Melendez-Calderon; Edwin van Asseldonk; Verena Klamroth-Marganska; Lars Lünenburger; Robert Riener; Herman van der Kooij Journal: J Neuroeng Rehabil Date: 2016-08-02 Impact factor: 4.262
Authors: Charlotte Richter; Bjoern Braunstein; Benjamin Staeudle; Julia Attias; Alexander Suess; Tobias Weber; Katya N Mileva; Joern Rittweger; David A Green; Kirsten Albracht Journal: NPJ Microgravity Date: 2021-08-09 Impact factor: 4.415