The respiratory exchange rate (RER) is defined as VCO2 produced divided by VO2 expended (where V is volume). Therefore, making these measurements requires accurate determination of inhaled and exhaled volume, as well as accurate recording of gas concentration. 07
How to calculate the human RER?
It is calculated by multiplying the oxygen expended (VO2) by the calorie equivalent per liter of oxygen expended (from Table 1) to get the resulting RER value. For example, with a mixed diet RER of 0.82, the amount of energy released per liter of oxygen consumed is 4.825 kcal (see Table 1).
How to calculate the respiratory exchange rate?
The respiratory exchange rate (RER) is determined by dividing the generated VCO2 by the expended VO2. The measurement is very similar to the configuration required for VO2 consumption, except that the CO2 flow produced coincides with the O2 consumed washbasin is integrated.
What does the RER value mean?
The respiratory exchange rate (RER) is the ratio of the volume of CO2 produced by the body to the amount of O2 consumed. This value of this ratio gives us an indication of whether the body is functioning aerobically or anaerobically.
What does an RER of 0.85 mean?
An RER of 0.85 means you’re burning about 50% fat and 50% carbohydrates. As exercise intensity increases, your body has to rely more and more on carbohydrates for fuel.
What do we measure directly to get the RER?
RER: Calculates the ratio of CO2 produced per minute and O2 consumed per minute.
What does an RER of 0.85 mean?
An RER of 0.85 means you’re burning about 50% fat and 50% carbohydrates. As exercise intensity increases, your body has to rely more and more on carbohydrates for fuel.
How is VO2 calculated at steady state?
The RER under typical metabolic conditions with stable respiratory function ranges from 0.7 to 1.0. If the RER is less than 0.7 or greater than 1.0, prolonged starvation or recent excess energy expenditure should be suspected, both events constituting a violation of the resting metabolic rate protocol (4).