Inspiratory muscle training

Domain X · Body, movement, breath & physical

What it is

IMT is a physical training method in which a person breathes in through a hand-held device that makes inhaling harder, so that the diaphragm and rib-cage muscles work against a load; breathing out is left unrestricted. In threshold devices, a spring-loaded one-way valve opens only when the person…

Format

• Stage C: Supervised initiation. Goal: correct technique and safe tolerance. Hill et al. recommend supervision, including monitoring oxygen saturation during the first session. Patients should be warned that transient muscle soreness is a normal response to unfamiliar muscle work. The manufacturer's…
• Format. The device is used individually at home after supervised teaching, sometimes alongside group PR. Trial programmes ran for weeks to months, but session counts are not given here. The psychotherapist's work is usually a small number of focused sessions within ongoing therapy, or joint work…

Who practises it, and how they are trained or regulated

• Stage B: Clinical assessment and screening (physiotherapist or clinician). Goal: to establish suitability, a baseline and safety. Clinicians measure maximum inspiratory pressure (PImax). They also assess breathlessness, health-related quality of life and exercise capacity, and screen for exclusions such as pneumothorax risk or the risk of spontaneous rib fracture. The contraindications and cautions are listed in…
• Stage D: Training period and progression (clinician-led). Goal: progressive strengthening. The clinician sets the training load, frequency, duration and progression, and progresses training as symptoms allow. Trials and device manuals specify these parameters, but they are deliberately not reproduced here. Psychotherapist's role: adherence support, work on breathlessness-related anxiety, and monitoring and passing…
• Version followed: inspiratory muscle training (IMT) as described in respiratory-physiotherapy practice for COPD (Hill, Cecins, Eastwood and Jenkins 2010 practical guide for clinicians, based on a threshold device), the manufacturer's user instructions for a spring-loaded threshold trainer (POWERbreathe Classic), the 2023 Cochrane review on IMT in COPD (Ammous et al.), and the guideline positions of the 2013 ATS/ERS…

Evidence status, as the guide reports it

• Evidence status (brief).

Questions to explore with your client

• What drew you to it, and what are you hoping it will change?
• Is there physical contact? Was it explained beforehand, and do you feel free to say no or stop at any point?
• Does it involve intense or unusual breathing? Have you been told about the medical conditions for which that is not advised?
• Does it involve fasting, a special diet or 'detox'? Have you discussed this with your doctor?
• Is it a group, retreat or community? How do they respond if someone wants to leave or raises a concern?
• Who runs it, and what training or registration do they hold?
• What actually happens in a session or meeting, and how often?
• What does it cost, and is there pressure to commit to more?
• How do you feel afterwards, in the hours and days that follow?
• Does it fit with, or clash with, the work we do here?

What practitioners of it watch for

• competitive escalation of loads, training while ill, and secrecy about symptoms.
• fear returning after exacerbations, and stopping maintenance activity once therapy ends.
• symptoms attributed to anxiety that may be physical, and the reverse. When in doubt, refer it on.
• magical expectations ("this will fix my anxiety"); disappointment if breathlessness changes little; and using the device during panic.
• the client being referred for a device instead of PR when PR is what is indicated; mixed messages between professionals; and you being drawn into giving physical advice.

When to involve someone else

• New or worsening physical symptoms, or advice to stop or change prescribed medication: involve the client's doctor or prescriber.
• Signs of coercion, isolation from family and friends, escalating costs or secrecy: discuss openly and consider safeguarding.
• A crisis or thoughts of suicide: follow your crisis protocol. In the US, call or text 988; in the UK and Ireland, Samaritans on 116 123.

Drawn automatically from the guide's own sections. Stay curious: neither endorse nor dismiss what the client values, and check anything that matters against the full guide and its sources. Not medical advice.