[Normal or high maximal oxygen uptake: a target in health].

To achieve the predicted maximal oxygen consumption, many organs need to increase their output in a synchronized fashion. Therefore, maximal oxygen consumption is the single most reliable parameter predicting fitness, morbidity and mortality. Peak O2 uptake can be measured from noninvasive ventilatory parameters during short, incremental, cardiopulmonary exercise test (CPET) on a cycle ergometer or on a treadmill.