An interventional study of Breathing training device (Inspiratory Muscle Training) and Oura Ring in Healthy, sponsored by University of California, Los Angeles. Enrolling by invitation at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-22.
Sponsored by University of California, Los Angeles · Not applicable, Interventional, and Prevention
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Among 17 studies in Psychological Well-Being by University of California, Los Angeles — 5 open to participants now, 5 under way, none of them phase 3. Psychological Well-Being · University of California, Los Angeles.
Among the 17 studies in Psychological Well-Being by University of California, Los Angeles, this one is the 12th largest by planned enrollment of the 16 interventional ones that give a count, is one of 3 that started in 2025, is one of 15 with no phase, and was the 12th registered.
2,195 studies on the registry are indexed under Psychological Well-Being; 728 are open to participants now.
Browse Psychological Well-Being studies →5 of the 17 studies in Psychological Well-Being by University of California, Los Angeles are open now, in 1 country. Recruiting first, the newest first:
University of California, Los Angeles · Sites in United States
Ages 18+
University of California, Los Angeles · Sites in United States
Ages 18+ · Women only · Healthy volunteers
University of California, Los Angeles · Sites in United States
Ages 18+ · Healthy volunteers
University of California, Los Angeles · Sites in United States
Ages 18+
By country, each count listing its studies:
Of the 401 Psychological Well-Being studies recruiting now, 218 (54%) set no upper age limit and 157 (39%) stop at 75 or younger; 120 take children under 18; 204 take healthy volunteers.
This study: 18 Years and older · all sexes · healthy volunteers too.
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17 studies; the count open now beside each. This study's row is marked.
First in 2005; this study’s year is marked. 3 started in 2025.
This study's planned enrollment of 150 is above the median of 110 across 1,798 interventional studies indexed under Psychological Well-Being.
Median enrollment 430 across the 16 interventional studies, 15,008 across the 1 observational. Of the 12 that completed or were terminated, 0 (0%) have results posted.
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University of California, Los Angeles is the lead sponsor of 1,170 studies on the registry; 195 are open to participants now.
Of its 95 completed or terminated interventional studies of FDA-regulated products, 70 (74%) have results posted.
1 of the studies in Psychological Well-Being by University of California, Los Angeles that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT06920407University of California, Los AngelesBreatheWell: Train Your Breathing, Relax Your Body, Open Your Mind | 2027-04-01 |
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Among the 17 studies in Psychological Well-Being by University of California, Los Angeles, from their registry updates:
Nothing recorded among them since 2026-09-25.
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The goal of this study is to determine whether tasks related to breathing training (daily inspiratory muscle training (IMT) and increased access to health data/awareness) performed for 12 weeks leads to positive changes in mental and physical states, and if these changes are sustained three months later. The study will assess whether IMT, compared to a sham IMT and the control group, improves psychological well-being, body awareness, and physical relaxation. Although there is evidence that all three interventions make a difference, the extent of their impact is yet to be determined, so the study aims to compare the effectiveness of the interventions, aiming to determine which may be most beneficial.
The main questions the study aims to answer are:
Participants will be randomly assigned to three groups:
Participants will:
This study seeks to investigate the impact of daily inspiratory muscle training (IMT) over 12 weeks on mental and physical well-being, focusing on whether the effects are sustained three months post-intervention. IMT is a breathing exercise known to improve respiratory function and reduce stress. This research will expand on previous findings showing that IMT can influence psychological states, such as increased awareness of the body, and improved relaxation and well-being. The investigators aim to compare the effects of IMT against a sham IMT group and a health data engagement-only group, assessing whether daily IMT enhances psychological well-being, body awareness, and physical relaxation.
Study Design and Groups:
Key Outcome Measures:
Study Procedures:
Participants will complete their assigned interventions for 12 weeks, with data collection at baseline, post-intervention (12 weeks), and at a 3-month follow-up. All participants will be asked to engage with weekly surveys to track their mental and physical health. The study also measures adherence, age, gender, physical activity, and sleep quality as potential confounding factors to better understand the broader impacts of the interventions.
This study aims to compare the effects of IMT at different resistance levels to see if it improves well-being, whether these benefits are maintained over time, and how it compares to simply engaging with health-tracking data.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants will perform Inspiratory Muscle Training (IMT) using the PowerBreathe IMT K3 device at 65% resistance, focusing on the effects of higher resistance training on respiratory strength, physical well-being, and emotional well-being.
Device: Breathing training device (Inspiratory Muscle Training) · Device: Oura Ring
Participants will perform the IMT procedure using the PowerBreathe IMT K3 device at 15% resistance to assess the effects of lower resistance on overall physical and emotional well-being, compared to higher resistance training.
Device: Breathing training device (Inspiratory Muscle Training) · Device: Oura Ring
Participants will not undergo the IMT procedure and will instead receive general health awareness through the Oura ring (a biometric ring and app), serving as the baseline group for comparison.
Device: Oura Ring
Daily inspiratory muscle training (IMT) using the PowerBreathe IMT K3 device at varying resistance levels (15% for Sham and 65% for Experimental group) for 12 weeks. Participants will perform breathing exercises designed to assess the effects of different resistance levels on overall physical and emotional well-being, with a focus on how varying resistance impacts both respiratory strength and well-being.
Also known as: Powerbreathe IMT K3 device
The Oura ring measures daily biometrics such as heart rate, sleep, and blood oxygen levels, providing personalized health data and insights. Participants have access to this data through a mobile app, allowing researchers to assess whether increased access to health data and awareness has an impact on overall physical and emotional well-being.
Also known as: biometric ring
Change in Psychological Well-Being
Psychological well-being will be assessed using the NIH Toolbox Psychological Well-Being Scale. This instrument evaluates life satisfaction, positive emotions, and sense of purpose. Higher scores indicate greater psychological well-being. Unit of Measure: Standardized scale score
Time frame: From enrollment to the completion of the 12-week intervention period, followed by the observational period extending until week 24.
Change in Body Awareness
Body awareness will be assessed using the Multidimensional Assessment of Interoceptive Awareness (MAIA), a validated questionnaire examining emotional awareness, body listening, and self-regulation. Higher scores indicate greater interoceptive awareness. Unit of Measure: Questionnaire scale score
Time frame: From enrollment to the end of the 12-week intervention period, followed by an observational period through week 24.
Change in Heart Rate Variability (HRV)
Heart rate variability will be assessed using the Root Mean Square of Successive Differences (RMSSD), reported in milliseconds. RMSSD reflects parasympathetic nervous system activity, with higher values indicating greater physiological relaxation. Unit of Measure: Milliseconds (ms)
Time frame: From enrollment to the end of the 12-week intervention period, followed by an observational period through week 24.
Change in Inspiratory Muscle Strength
Inspiratory muscle strength will be measured using the PowerBreathe training device and reported in centimeters of water pressure (cmH₂O), representing the pressure generated during inhalation against resistance. Unit of Measure: cmH₂O
Time frame: From enrollment (first physiology visit) to the end of the 12-week intervention period.
Change in Peak Inspiratory Flow Rate
Peak inspiratory flow rate will be measured using the PowerBreathe training device and recorded in liters per minute (L/min), indicating the maximum airflow achieved during inhalation. Unit of Measure: Liters per minute (L/min)
Time frame: From enrollment (first physiology visit) to the end of the 12-week intervention period.
Change in Inhaled Volume per Breath
Inhaled volume per breath will be assessed using the PowerBreathe training device and measured in milliliters (mL), indicating changes in lung capacity throughout the intervention. Unit of Measure: Milliliters (mL)
Time frame: From enrollment (first physiology visit) to the end of the 12-week intervention period.
Started Aug 2025 (actual). Primary completion is estimated for Apr 2027, 19 months after the start.
Of 1,261 non-industry interventional studies with no phase under Psychological Well-Being, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 34. This study's planned 19 months is above that.
Counting every sponsor, half of 1,304 studies reached it within 16 months; a quarter within 7 and three quarters within 34.
How these figures are worked out, and which studies are left out of them.
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