Introduction Nearly all metabolic measurement systems are based on analysis of respiratory gas exchange at the mouth, thus, the calibration of these systems should consist in controlled simulation of the process of breathing. This simulation should incorporate essential physiological characteristics such as the respiration-like pattern of gas flows and the dynamic temporal profiles of O2 and CO2 concentrations, reflecting the …
What is the Gold Standard of Incompetence? Background The reason for this paper is misinformation being fed to unsuspecting prospective buyers of metabolic measurement system. These systems are known generically as Metabolic Carts (MC), CPX systems, Ergospirometry systems in Europe and also as calorimetry measurement systems; for simplicity, we will hereafter refer to them as MC’s. It appears that some …
Cycle ergometers are referred to as “ergometers”, “stationary bicycles”, or simply “bikes”. Your budget and the intended application determine the selection of an ergometer. Obviously, for home use you will expect to spend substantially less than for professional use, but even here it makes a difference whether the user is a fitness buff or a cardiac patient.Things to consider are: …
When most lay people hear the word STRESS TEST, they visualize a person running on a treadmill or pedaling on a stationary bicycle while all kinds of wires are attached. What they think of is the Cardiac Stress Test. It is not immediately obvious to everyone, that a deficiency in the performance of the heart may be caused by an …
If you are teaching physiology, metabolism and/or the use of Metabolic Measurement Systems, perhaps one of the most important subjects you should teach is to understand what factors affect the accuracy of VO2, VCO2 and Flow (volume) measurements and how to find and correct such problems. All too often we hear that a metabolic measurement system is validated by comparing …