[What equipment to be chosen, with what criteria, and what requirements?]

The increasing precision of exercise testing modalities has contributing to making it an excellent means of evaluating functional impairment in dyspnea patients. It has become an indispensable diagnostic tool. Interpretation of data acquired during an exercise test depends on the reliability of data collection and the accuracy of the different calculations. The wide variety of available measurement systems (different principles, different methods for measuring lung volumes and ventilatory flow, canalization systems and valves, analyzers) and data processing systems, and the presence of very simple or on the contrary very complicated systems emphasizes the importance of determining quality requirements used for selecting equipment.