NCT05320952

Brief Summary

Background: Obstructive sleep apnea is one of our common diseases and up to 80% of patients are estimated to be undiagnosed. Its main risk factors are overweight, age, male gender, menopause, small jaw, sedative medications / drugs and alcohol. The most important treatment for sleep apnea is continuous positive airway pressure (CPAP). However, not all patients adapt or benefit from device therapy, and up to about 60% stop using the device. Underlying sleep apnea are mechanisms other than anatomical factors such as respiratory wake sensitivity, loop gain control function, and upper respiratory tract muscle activation response and efficiency. Depending on which of these mechanisms dominates as the cause of sleep apnea, the patient's phenotype may vary and CPAP device therapy may not be the correct form of treatment for all patients. Therefore, new targeted therapies should be developed. The WellO2 breathing training device performs back-pressure steam breathing training during the inhalation and exhalation phases. WellO2 effectively exercises the power of the inspiratory muscles, increases the inspiratory muscles, reduces the feeling of dyspnea due to exertion, increases the economy of respiration and delays inhalation muscles. It is a drug-free treatment and easy to use. The use of the WellO2 ventilator has not been previously studied in sleep apnea patients.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started May 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 24, 2022

Completed
2 months until next milestone

First Posted

Study publicly available on registry

April 11, 2022

Completed
1 month until next milestone

Study Start

First participant enrolled

May 23, 2022

Completed
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 31, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2024

Completed
Last Updated

May 31, 2025

Status Verified

May 1, 2025

Enrollment Period

2.3 years

First QC Date

February 24, 2022

Last Update Submit

May 27, 2025

Conditions

Keywords

sleep apneamuscle strength exerciseWellO2apnea hypopnea

Outcome Measures

Primary Outcomes (1)

  • Apnea-hypopnea index, AHI

    Change in AHI measured from polysomnogaphy in the beginning and after 3 month's of WellO2 treatment?

    3 months

Secondary Outcomes (3)

  • Sleep apnea symptoms

    3 months

  • Longterm benefits in AHI and symptoms of sleep apnea

    6 months

  • WellO2 device usability

    3 months

Study Arms (1)

working sleep apnea patients

EXPERIMENTAL

50 sleep apnea patients with mild to moderate sleep apnea using WellO2 device for three months

Device: WellO2

Interventions

WellO2DEVICE

The WellO2 breathing training device performs back-pressure steam breathing training during the inhalation and exhalation phases.

working sleep apnea patients

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18-60 years
  • Male:Famel 1:1
  • AHI 10-29 / h
  • working patients

You may not qualify if:

  • Previous surgical treatment for sleep apnea, current CPAP or mandibular device therapy
  • significant history of nasal, oral and pharyngeal disorders
  • BMI\> 40 kg / m2
  • other severe pulmonary diseases (eg COPD, asthma, pulmonary fibrosis) severe heart failure (NYHA 3-4), previous brain insult, neuromuscular disease or pregnancy, and work disability.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Turku University Hospital, Division of Medicine, Dept of Pulmonary diseases and University of Turku, Sleep Research Centre

Turku, 20520, Finland

Location

Related Publications (10)

  • Peppard PE, Young T, Barnet JH, Palta M, Hagen EW, Hla KM. Increased prevalence of sleep-disordered breathing in adults. Am J Epidemiol. 2013 May 1;177(9):1006-14. doi: 10.1093/aje/kws342. Epub 2013 Apr 14.

    PMID: 23589584BACKGROUND
  • Afsharpaiman S, Shahverdi E, Vahedi E, Aqaee H. Continuous Positive Airway Pressure Compliance in Patients with Obstructive Sleep Apnea. Tanaffos. 2016;15(1):25-30.

    PMID: 27403175BACKGROUND
  • Dempsey JA, Xie A, Patz DS, Wang D. Physiology in medicine: obstructive sleep apnea pathogenesis and treatment--considerations beyond airway anatomy. J Appl Physiol (1985). 2014 Jan 1;116(1):3-12. doi: 10.1152/japplphysiol.01054.2013. Epub 2013 Nov 7.

    PMID: 24201709BACKGROUND
  • Eckert DJ. Phenotypic approaches to obstructive sleep apnoea - New pathways for targeted therapy. Sleep Med Rev. 2018 Feb;37:45-59. doi: 10.1016/j.smrv.2016.12.003. Epub 2016 Dec 18.

    PMID: 28110857BACKGROUND
  • Enright SJ, Unnithan VB, Heward C, Withnall L, Davies DH. Effect of high-intensity inspiratory muscle training on lung volumes, diaphragm thickness, and exercise capacity in subjects who are healthy. Phys Ther. 2006 Mar;86(3):345-54.

    PMID: 16506871BACKGROUND
  • Karsten M, Ribeiro GS, Esquivel MS, Matte DL. The effects of inspiratory muscle training with linear workload devices on the sports performance and cardiopulmonary function of athletes: A systematic review and meta-analysis. Phys Ther Sport. 2018 Nov;34:92-104. doi: 10.1016/j.ptsp.2018.09.004. Epub 2018 Sep 15.

    PMID: 30261349BACKGROUND
  • Romer LM, McConnell AK. Specificity and reversibility of inspiratory muscle training. Med Sci Sports Exerc. 2003 Feb;35(2):237-44. doi: 10.1249/01.MSS.0000048642.58419.1E.

    PMID: 12569211BACKGROUND
  • Romer LM, McConnell AK, Jones DA. Effects of inspiratory muscle training on time-trial performance in trained cyclists. J Sports Sci. 2002 Jul;20(7):547-62. doi: 10.1080/026404102760000053.

    PMID: 12166881BACKGROUND
  • Turner LA, Tecklenburg-Lund SL, Chapman RF, Stager JM, Wilhite DP, Mickleborough TD. Inspiratory muscle training lowers the oxygen cost of voluntary hyperpnea. J Appl Physiol (1985). 2012 Jan;112(1):127-34. doi: 10.1152/japplphysiol.00954.2011. Epub 2011 Oct 6.

    PMID: 21979803BACKGROUND
  • Al-Rammahi U, Soukka T, Malinen J, Happonen RP, Sovijarvi A, Anttalainen U. Effects of steam-assisted respiratory muscle training on sleep apnoea symptoms and pulmonary function in men and women: a pilot study. Sleep Breath. 2025 Sep 15;29(5):286. doi: 10.1007/s11325-025-03449-2.

MeSH Terms

Conditions

Sleep Apnea Syndromes

Condition Hierarchy (Ancestors)

ApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System Diseases

Study Officials

  • Ulla Anttalainen, MD, PhD

    Turku University Hospital, Turku, Finland

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: Open label single group study with three months active phase followed by three months washout.
Sponsor Type
OTHER GOV
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 24, 2022

First Posted

April 11, 2022

Study Start

May 23, 2022

Primary Completion

August 31, 2024

Study Completion

August 31, 2024

Last Updated

May 31, 2025

Record last verified: 2025-05

Data Sharing

IPD Sharing
Will not share

Locations