ABSTRACT
The ISO 11226 (2000) standard focuses on the evaluation of static working postures. It lays down ergonomic recommendations for a variety of tasks based on experimental studies conducted on the relationships between biomechanical overload, pain, and resistance to fatigue, with respect to static working postures. The recommendations supplied by the international standard as to which postures should be considered and their joint Range Of Motion classified in relation to acceptability are certainly useful from the descriptive standpoint. The European law "New Machinery Directive" states that the manufacturer must ensure that when used as recommended, the machinery must minimize the potential discomfort, fatigue, and stress of the operator, taking into account the principles of ergonomics. For static postures, the widest acceptable angle is provided for each joint, as well as the narrowest unacceptable angle, regardless of the duration. However, one major difference lies in the introduction of both static postures and movements defined as "low frequency" and "high frequency".
