Physical, Chemical for Liquids, Chemical for Gas, Mechanical and Electrical. After addressing measurement performed in metrological and related normatives, the book explores main measuring instruments ...

Despite extensive use over 40 years, physical activity questionnaires still show limited reliability and validity ... Such usage may become possible through the development of standardised instruments ...

Twenty-three instruments were identified in the ... and an additional 5 articles reported measurement of physical symptoms as a component of quality of life measures. Separate scales were ...