Bronner S, Agraharasamakulam S, Ojofeitimi S
Analysis of Dance and Movement Center, Long Island University, Brooklyn, NY, USA.
J Med Eng Technol. 2010 Apr;34(3):232-42. doi: 10.3109/03091900903580512.
To establish the reliability, accuracy and concurrent validity of electrogoniometers for measuring extreme lower extremity movements.
Reliability, accuracy and validity study.
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.
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.
This error may be acceptable for lower extremity studies with extreme movements when motion capture is unavailable.
确定用于测量下肢极限运动的电子角度计的可靠性、准确性和同时效度。
可靠性、准确性和效度研究。
本项目采用了两个实验。实验一将电子角度计与数字量角器进行比较以确定其准确性。实验二将电子角度计与一种标准测量方法——动作分析，对17名舞者矢状面舞蹈动作进行比较。计算髋关节、膝关节和踝关节矢状面角位移的组内相关系数（ICC）和测量标准误差（SEM）。
在实验一中，电子角度计与量角器的相关性很高（r≥0.998，SEM≤3.65度）。在实验二中，仪器和评估者内可靠性相关性很高（r≥0.983和r≥0.972，SEM≤3.49度和≤4.48度），与动作分析的同时效度相关性也很高（r≥0.949，SEM≤6.80度）。
在无法进行动作捕捉的情况下，对于极端运动的下肢研究，这种误差可能是可以接受的。
