Abstract
In order to review the measurement in physical therapy both in clinical and research contexts, its general concept, cautions employed, accuracy, errors in obtained data, reliability and validity are described, and an objective outcome measure is also introduced. Quantitative examination plays an integral role in the process of objective measurment. For that purpose, accuracy of evaluation method and test apparatus should be certified, and normal value and bias should be confirmed, both of which result in reliability of the obtained data. The process of standardization is then essential in confirming the reliability and validity of measurement. In addition, clinical applicability of Hand-Held Dynamometer is noted for measuring muscle strength, and fatigue index is introduced as a measure of muscle endurance.
