OBJECTIVESince 1987, professor Wasserman displayed cardiopulmonary exercise test starting (CPET) data as 3 rows and 3 columns 9 panels plots. Although many changes and additions, there still are some important functional parameters were not shown in 9 panels. We want to display more.

METHODSThe 100 Hz sampling data of symptom-limited maximal limit CPET was used to calculate breath-by-breath data after per second cutting technique, and then to calculate the average value of 10 s data for graphic display.

RESULTSIn new 9 plots, panels (1) - (7) use time for the "X" axis, oxygen uptake, carbon dioxide elimination, loaded power, heart rate, systolic blood pressure, diastolic blood pressure, heart rate pressure product, minute ventilation, respiratory exchange ratio, CO2 elimination ventilatory efficiency, oxygen uptake ventilatory efficiency, oxygen pulse, ST segment level and ST segment slope at V5 lead, tidal volume, respiratory rate, end tidal oxygen partial pressure, end tidal carbon dioxide partial pressure and oxygen saturation of 18 noninvasive parameters, and arterial oxygen partial pressure, arterial oxygen saturation, arterial partial pressure of carbon dioxide 3 blood gas parameters for the "Y" axis respectively. There are 3 vertical dashed lines represent dividing lines of the resting, warm-up, incremental power loading exercise and recovery period respectively. In addition, panels (1) and (4) have the horizontal dashed line represents the maximal oxygen uptake (red), oxygen uptake efficiency plateau (red) and the lowest value of carbon dioxide elimation ventilatory efficiency (blue) expected value respectively. Panel ( used heart rate and carbon dioxide elimination (as Y) against to oxygen uptake (as X); the "+" indicates intersection of the predicted maximum values of oxygen uptake and heart rate. Panel (9) used tidal volume (as Y) against over minute ventilation (as X), vertical dashed line is the measured maximum ventilatory volume, the horizontal dashed lines were the inspiratory capacity and vital capacity respectively.

CONCLUSIONNew CPET 9 plots emphasizes on the integration of all circulatory, respiratory and metabolic etc functional parameters in human, and is conductive to optimization of clinical medical service and health management.