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Effect of IMT in Patients After Acute Exacerbations of COPD

The Effect of Home-based Inspiratory Muscle Training Compared to Usual Care on Readmission Rate in Patients After a Severe Acute Exacerbation of Chronic Obstructive Pulmonary Disease: a Randomised, Multicentre, Parallel Group Clinical Trial: IN-SPIRED Trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07213128
Acronym
IN-SPIRED
Enrollment
358
Registered
2025-10-08
Start date
2026-01-06
Completion date
2029-02-01
Last updated
2026-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Obstructive Pulmonary Diseases, COPD, Symptom Exacerbation

Keywords

Inspiratory muscle training, Respiratory muscle training, acute exacerbation, chronic obstructive pulmonary disease

Brief summary

The goal of this clinical trial is to test whether home-based inspiratory muscle training can reduce hospital readmissions and death in patients recovering from a severe acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The main questions this study aims to answer are: Does adding home-based inspiratory muscle training to usual care lower the risk of all-cause hospital readmission or death within 180 days after discharge? Does inspiratory muscle training improve respiratory muscle strength, symptoms of dyspnea, quality of life, and functional capacity compared to usual care? Researchers will compare patients randomized to: Intervention group: Home-based inspiratory muscle training plus usual care Control group: Usual care only to see if inspiratory muscle training leads to fewer readmissions and deaths, and better patient-reported and physiological outcomes. Participants will: Be hospitalized for ≥3 days due to AECOPD, age ≥35 years, able to consent, and own a compatible smartphone. In the intervention group, receives usual care and additionally inspiratory muscle training: Inspiratory muscle training twice daily for 90 days, then once daily up to day 180, with remote telemonitoring via a smartphone app and online supervised sessions. The control group will continue with usual care (pharmacological treatment, smoking cessation advice, vaccinations, and referral to pulmonary rehabilitation if available). Follow-up assessments will include hospital readmissions, survival, and quality of life questionnaires up to 12 months after discharge.

Interventions

OTHERTraining

home-based inspiratory muscle training (IMT) will be delivered using a portable IMT device connected via Bluetooth to a smartphone application that provides real-time feedback, adherence monitoring, and telemonitoring by the study team. Patients will train for 365 days following hospital discharge due to an acute exacerbation of COPD: * Intensive phase (Day 0-90): 2 daily sessions, each consisting of 30 breaths against an inspiratory load set by thetelemonitor, with regular online supervised IMT sessions, 7 sessions in total * Maintenance phase (Day 91-180): One daily session of 30 breaths, with sporadic online supervised IMT sessions, 2 sessions in total. * Follow-up phase (Day 181-365): Participants may continue IMT unsupervised. Supervision includes both in-person sessions at hospital visits and online sessions with telemonitors.

Sponsors

KU Leuven
Lead SponsorOTHER
Hopitaux Iris Sud
CollaboratorUNKNOWN
Centre Hospitalier Universitaire Saint Pierre
CollaboratorOTHER
Onze Lieve Vrouw Hospital
CollaboratorOTHER
AZ Delta
CollaboratorOTHER
University Hospital, Antwerp
CollaboratorOTHER
Algemeen Ziekenhuis Maria Middelares
CollaboratorOTHER
Grand Hôpital de Charleroi
CollaboratorOTHER
Centre Hospitalier Universitaire UCLouvain Namur
CollaboratorOTHER
Centre Hospitalier Universitaire de Liege
CollaboratorOTHER
General Hospital Groeninge
CollaboratorOTHER
University Hospital, Ghent
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
35 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients admitted to the hospital ≥3 days for AECOPD * Read and speak French, Dutch or English * Age ≥ 35 years * Able to provide informed consent * Possessing a smartphone, compatible with the tele-monitoring app and able to perform video meetings.

Exclusion criteria

* Patients already performing IMT at time of inclusion * Patients with estimated \<90 days life expectancy * Non-COPD pulmonary disease as primary diagnosis * Active malignancy * Inability to perform IMT or response to questionnaires (e.g., neurological/cognitive impairment) * Acute instable cardiac arrythmia or ischemia * Acute pneumothorax * Planned lung volume reduction procedure \<180days * Waitlisted for lung transplantation * Patients admitted to an in-hospital rehabilitation ward * Patients included in other interventional trial related to COPD that would interfere with our trial outcomes.

Design outcomes

Primary

MeasureTime frame
Composite outcome (all-cause hospital readmission or mortality)within 180 days after hospital discharge

Secondary

MeasureTime frameDescription
Composite outcome (all-cause hospital readmission or mortality)within 90 days after hospital dischargeOccurrence
Time-to-composite outcome (all-cause hospital readmission or mortality)within 180 days after hospital dischargeTime-to-event
Hospital re-admissionDay 28, 90 and 180 after hospital discharge1. Occurrence 2. Reason
All-cause mortalityDay 28, 90 and 180 after hospital discharge1. Occurrence 2. Reason
Primary care and specialty consultationscDay 90 and 180 after hospital dischargeNumber of days post-discharge
Re-exacerbationDay 90 and 180 after hospital discharge1. Occurrence 2. Number of occurrences/patient post-discharge
Change in Forced Expiratory Volume in 1 Second (FEV₁), litersDay 90 and 180 after hospital discharge\- Mean change in FEV₁ (liters) from baseline, measured by spirometry, according to ATS/ERS guidelines.
Change in Forced Expiratory Volume in 1 Second (FEV₁), %predDay 90 and 180 after hospital discharge\- Mean change in FEV₁ (% predicted) from baseline, measured by spirometry.
Change in Forced Vital Capacity (FVC), litersDay 90 and Day 180 after hospital discharge\- Mean change in FVC (liters) from baseline, measured by spirometry.
Change in Forced Vital Capacity (FVC), %predictedDay 90 and Day 180 after hospital discharge\- Mean change in FVC (% predicted) from baseline, measured by spirometry.
Change in FEV₁/FVC Ratio (%)Day 90 and Day 180 after hospital dischargeMean change in the ratio of FEV₁ to FVC (percentage) from baseline, measured by spirometry.
Change in Functional Residual Capacity (FRC), litersDay 180 after hospital discharge\- Mean change in FRC (liters) from baseline, measured by body plethysmography.
Change in Functional Residual Capacity (FRC), %predictedDay 180 after hospital discharge\- Mean change in FRC (% predicted) from baseline, measured by body plethysmography.
Change in Residual Volume (RV), litersDay 180 after hospital discharge\- Mean change in RV (liters) from baseline, measured by body plethysmography.
Change in Residual Volume (RV), % predictedDay 180 after hospital discharge\- Mean change in RV (% predicted) from baseline, measured by body plethysmography.
Change in Total Lung Capacity (TLC), litersDay 180 after hospital discharge\- Mean change in TLC (liters) from baseline, measured by body plethysmography.
Change in Total Lung Capacity (TLC), %predictedDay 180 after hospital discharge\- Mean change in TLC (% predicted) from baseline, measured by body plethysmography.
Maximal inspiratory pressure (PImax)Day 90 and 180 after hospital dischargeChange from baseline
Baseline/Transition Dyspnea Index (BDI/TDI)Day 28, 90, 180 after hospital dischargeChange from baseline
EQ-5D-5L questionnaireDay 28, 90, 180 after hospital dischargeChange from baseline
COPD Assessment test (CAT)Day 28, 90, 180 after hospital dischargeChange from baseline
Adverse eventsDay 90, 180 after hospital discharge1. Occurrence 2. Number of occurrences/patient post-discharge
Serious adverse eventsDay 90 and 180 after hospital discharge1. Occurrence 2. Number of occurrences/patient post-discharge

Countries

Belgium

Contacts

CONTACTMarine Van Hollebeke, PhD
marine.vanhollebeke@kuleuven.be0032498606820
CONTACTDaniel Langer, PhD
daniel.langer@kuleuven.be0032 16 37 64 97
PRINCIPAL_INVESTIGATORDaniel Langer, PhD

KU Leuven

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026