Final answer:
The resting energy expenditure (REE) can be estimated using the respiratory quotient (RQ) and urinary nitrogen values, applying these to a predictive equation such as the Harris-Benedict equation, which takes into account personal variables and nitrogen balance. However, precise calculation is not possible without additional individual details.
Step-by-step explanation:
To calculate the resting energy expenditure (REE) of the individual, the respiratory quotient (RQ) is first determined using the provided VO2 and VCO2 values. The equation for RQ is RQ = VCO2 / VO2, which in this case comes out to be 270 ml/min divided by 300 ml/min, resulting in an RQ of 0.9. After obtaining the RQ, the REE can be estimated using predictive equations that include the RQ, oxygen consumption (VO2), and urinary nitrogen as factors. Although the user has not provided the specific equation they are using, it is worth noting that the metabolism of different substrates (fats, carbohydrates, and proteins) alters the RQ, and the urinary nitrogen value is essential in accounting for protein metabolism.
The approximate REE can then be calculated by applying the RQ and urinary nitrogen values to an equation such as the modified Harris-Benedict equation or Mifflin-St Jeor equation, which considers age, sex, weight, height, and nitrogen balance in some cases.
For example, if using the Harris-Benedict equation:
BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age in years) + (5 * sex) - (6.8 * 70)
Adjustments are then made based on RQ and the urinary nitrogen data. However, without additional information regarding the subject's weight, height, age, and sex, as well as the specific equation to be used, providing the exact numeric REE is not possible with the current data.