DEVICE: Vista-MX Metabolic Measurement System (00850644007039)

An assembly of devices intended to noninvasively assess the cardiopulmonary response to exercise or measure of energy expenditure using indirect calorimetry. Breath by breath measurements of flow, oxygen (O2) uptake, and carbon dioxide (CO2) production are performed by O2 and CO2 analysers during exercise, along with the measurement of vital parameters. A mask, mouthpiece, or hood is attached to tubing and connected from the patient to the gas analysers while exercise is being performed using a particular device (e.g., an ergometer). The system typically monitors functions [e.g., provides continuous electrocardiogram (ECG)], provides control of the workload, and displays and prints results.