We have three state-of-the-art calorimetry rooms to measure energy expenditure at rest and at different activity levels. While the person is inside the calorimetry room and breathing freely, fresh inlet air will flow through the room. The concentrations of O2 and CO2 are measured both in the inlet air and in the outlet air, and these values are used to calculate energy expenditure.
The first room measures resting metabolic rate, the second room measures energy expenditure during physical activity, and the third room measures energy expenditure over a 24-hour period.

Procedures
Responsible
Training in the use of the calorimetry room is required. Please contact Stine Ulven for further assistance.
References
- Henriksen HB, Henriksen C, de Sousa ARS, Alavi DT, Augestad EMS, Rising R, Dörner R, Hägele FA, Bosy-Westphal A, Blomhoff R, Ulven SM, Olsen T. Validity and reproducibility of a whole-room indirect calorimeter for the estimation of VO2, VCO2, and resting metabolic rate. Physiol Rep. 2023 Apr;11(7):e15658. doi: 10.14814/phy2.15658. PMID: 37020398; PMCID: PMC10076691.
- Minge, M. M., Henriksen, C., Augestad, E. M. S., Blomhoff, R., Hägele, F. A., Dörner, R., Rising, R., Ulven, S. M., & Olsen, T. (2026). Validity and reproducibility of a whole-room indirect calorimeter for measurement of the thermic effect of food. Physiological Reports, 14, e70740. https://doi.org/10.14814/phy2.70740