Studies of resistance breathing and steam breathing

In addition to being developed by experts in health care, wellness, and technology, WellO2 Oy has a highly qualified medical advisory board that develops scientific research activities related to its effects as well as monitoring international research and development in respiratory rehabilitation and commenting on related international publications.

Several studies of WellO2 are currently ongoing, and two of them were presented at the European Respiratory Society (ERG) international congress on September 6, 2022.

WellO2's first own study:

"It is now clinically proven that the Finnish resistance- & steam breathing trainer WellO2 improves breathing power up to 20 % after only 4 weeks!"

Abstract in English: Effects of counterpressure breathing with steam inhalation on lung function in stable asthma

Poster about the study here.  

Press release in English (made by Nordic Innovation Shop): Clinical study verifies the experience of 100 000+ satisfied WellO2 customers - ePressi

A pilot study related to WellO2's effects on voice production has been published. After using the WellO2 device for 10 minutes a day for a month, the participants reported that their voice problems were alleviated. Read the pilot study here:

Resistance breathing and steam breathing have been studied separately for a variety of breathing problems. Here are a few references:


1. Tyrrell D., et al. Local hyperthermia benefits natural and experimental common colds. 1989, BMJ. 298:1280-3

2. Conti C., et al. Antiviral effect of hyperthermic treatment in rhinovirus infection. Antimicrob Agents Chemother, 1999;43(4):822-9.

3. Sebastian L., et al. The effect of local hyperthermia on allergen-induced nasal congestion and mediator release. J Allergy Clin Immunol 1993, 92:850-6.

4. Desrosiers M. et al. Treatment with hot, humid air reduces the nasal response to allergen challenge. J Allergy Clin Immunol 1997, 99:77-86.

5. Foxman et al. Temperature-dependent innate defence against the common cold virus limits viral replication at warm temperature in mouse airway cells. PNAS, 2015, vol 112, no: 3.

6. Jing J.C. et al. Scientific REPORTS | 7: 8522 | DOI:10.1038/s41598-017-08968-x. Visualization and Detection of Ciliary Beating Pattern and Frequency in the Upper Airway using Phase Resolved Doppler Optical Coherence Tomography 2017.

7. Vora S.U. et. al. Effect of Steam Inhalation on Mucociliary Activity in Patients of Chronic Pulmonary Disease. Indian J Chest Dis Allied Sci, 1993, 35 (1), 31-4 Jan-Mar .

8. Pick HJ., et al. P25 Inspiratory muscle training (IMT) for adults discharged from hospital with community acquired pneumonia (CAP) – a feasibility study. Thorax, 2018, Vol. 73, Issue Suppl 4.

9. Björkqvist M., et al. Bottle-blowing in Hospital-treated Patients with Community-acquired Pneumonia. J Scand Inf. Dis. 1997, 29/1.


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