POWERbreathe Classic

Heavy Resistance


Choose POWERbreathe Classic (Heavy Resistance):

  • Only if you have reached the highest load setting on a POWERbreathe Medium Resistance model.  

POWERbreathe Classic (Heavy Resistance) uses a variable load calibrated spring, calibrated to a Heavy Resistance. It can be adjusted from the lowest load setting (10cmH2O) when you begin training and increased as your breathing muscles adapt and become stronger (maximum load setting 250cmH2O).

REF: PB1003


  • First generation POWERbreathe Inspiratory Muscle Training (IMT) device
  • Mechanical, adjustable with load setting indicator
  • Drug-free - no side effects or drug interactions
  • Awarded a Millennium Product by UK Design Council
  • Washable

Heavy Resistance Load Settings

  • Level 1 = 10cmH2
  • Level 2 = 40cmH2O
  • Level 3 = 70cmH2O
  • Level 4 = 100cmH2O
  • Level 5 = 130cmH2O
  • Level 6 = 160cmH2O
  • Level 7 = 190cmH2O
  • Level 8 = 220cmH2O
  • Level 9 = 250cmH2O

Precise load settings may vary due to: (1) the analogue nature of the calibrated spring tensioner and the precision with which the load is selected; (2) a small effect of inspiratory flow rate upon spring compression such that high inspiratory flow rates lead to greater spring compression, and a small increase in load.

This effect is common to all spring loaded devices, and its size is magnified by increasing spring range (it is larger in a spring with a maximum range of 90cmH2O compared with one with half this range), it is also greater at lower absolute load settings.

POWERbreathe is a scientifically proven Inspiratory Muscle Training (IMT) device, developed by leading scientists for improving the strength and endurance of the muscles used to breathe in, primarily the diaphragm and intercostals / rib cage muscles.

As with any other muscle, respiratory muscles can be trained so that they are more resistant to fatigue. This resistance to fatigue results in reduced breathlessness and enhanced exericse tolerance. 

POWERbreathe Classic uses scientifically proven Pressure Threshold Training. This provides a specific and consistent pressure to train against. When breathing in through POWERbreathe the load calibrated spring provides the resistance.  

How to use:

  1. Put the nose-clip on so that it pushes your nostrils together (this is optional but prevents you from breathing in through your nose).
  2. Breathe in quickly and forcefully through your POWERbreathe for 30 breaths twice a day (preferably morning and night so you allow your inspiratory muscles time to recover in between sessions). This is the scientifially proven training regimen.
  3. As your inspiratory muscle strength and stamina improve, adjust and increase the resistance.
  4. Within a few days your inspiratory muscles will feel stronger; within 3-weeks you’ll feel less breathless; and within 4 weeks activities will feel easier.
  5. Full instructions are provided in the accompanying user manual.


  1. Your POWERbreathe will be exposed to saliva during use. We recommend that a few times a week your POWERbreathe should be soaked in warm water for about 10 minutes (see your POWERbreathe Manual for full details).
  2. Once a week your POWERbreathe should be soaked in a mild cleansing solution instead of water, using the POWERbreathe Cleansing Tablets - only 1 tablet is required each time. 

POWERbreathe is drug free, suitable for almost anyone and should cause no harmful side effects when used properly. Please read the following precautions and contraindications to ensure that you use your POWERbreathe safely and appropriately.

If you have any doubts about POWERbreathe’s suitability, or you have a medical condition, please consult your doctor.


  • Do not make changes to any prescribed medication or prescribed treatment programme without consulting your doctor.
  • Do not use POWERbreathe if you are suffering from a ruptured eardrum.
  • To prevent the potential transmission of infections, we recommend that you do not share your POWERbreathe with other users, including family members.
  • This product is not intended to diagnose, treat, cure or prevent any disease.
  • POWERbreathe is designed for exercising your inspiratory muscles only. No other use is intended or implied.
  • Anyone who is under the age of 16 should only use POWERbreathe with supervision from an adult. POWERbreathe contains small parts and is not suitable for children under 7 years.
  • Whilst training with POWERbreathe you should feel resistance when inhaling but it should not be painful. If you should feel pain whilst using POWERbreathe, stop immediately and consult your doctor.
  • Some users may experience slight ear discomfort when training with Medic Plus, especially if they are recovering from a cold. This is caused by inadequate equalisation of pressure between the mouth and ears. If symptoms persist, please consult your doctor.
  • If you are suffering from a cold, sinusitis or respiratory tract infection, we advise that you do not use POWERbreathe until symptoms have disappeared. If in doubt, consult your doctor.
  • Refer to your Healthcare Professional before using POWERbreathe if you have any of the following conditions:
  1. A history of spontaneous pneumothorax (a collapsed lung that was not due to traumatic injury e.g. broken rib), as it may lead to a recurrence of the condition.
  2. Pulmonary hypertension o Large bullae on chest x-ray
  3. Marked osteoporosis with history of rib fractures
  4. Desaturation during or following IMT (<94%)


Inspiratory muscle training, such as training with POWERbreathe, is not recommended for patients with certain conditions, including the following:

  • Asthma patients who have low symptom perception and suffer from frequent, severe exacerbations or with an abnormally low perception of dyspnoea
  • If you are suffering from a ruptured eardrum or any other condition of the ear
  • Patients with marked elevated left ventricular end-diastolic volume and pressure
  • Patients with worsening heart failure signs and symptoms after RMT / IMT
  • If in doubt, consult your Healthcare Professional.
  • POWERbreathe IMT device
  • Mouthpiece (PVC - not made with natural rubber latex or and phthalates)
  • Nose clip
  • Storage pouch
  • 4 cleansing tablets
  • User manual

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Filter Reviews by Product use
After only a couple of weeks I found a positive difference
Review by L Bywater
Posted 20 September 2012
On the up and up! I have now had my POWERbreathe for six weeks, I planned to see what the effects would be after then, but after only a couple of weeks I found a positive difference.
My breathing was a lot better, easier and deeper, and I felt more confident and stronger, and found I did not need to carry my blue inhaler around with me. Working with my asthma nurse, (who had not heard of POWERbreathe) I still use my medication for the asthma I developed some ten years ago. I have always been active and do mountaineering, biking and the like, and still continue to do so. So it was baffling to find my condition was starting to bother me at times, while at rest.
I use the red POWERbreathe Sport, now on my seventh week, after starting on the zero setting, now on 1.75. My peak flow readings are now averaging out at a higher reading than when I started, although technique using this is a bit iffy. All in all, after using POWERbreathe I feel very positive and I am only at the beginning.
Product use: Endurance training
I have found Powerbreathe very helpful in many aspects of my training
Review by Georgie Harland, Olympic Medallist, Modern Pentathlon
Posted 20 September 2012
I have been using the POWERbreathe Classic Sports Performance ever since 2004 and have found it very helpful in many aspects of my training but most specifically when I have little rest in between sets in the pool.
Product use: Workplace
My new 'personal bests' are in no small way a result of using your red POWERbreathe
Review by Frank Makin
Posted 20 September 2012
On the recommendation of a rowing friend I purchased a POWERbreathe on the 15th Feb and commenced twice daily exercises in the hope of improving my running performance, especially for the 2007 London marathon. On the 18th March I ran as a training run, the Ashby 20 in 2hr 45m 28s, an improvement of 1m 23s; 24th April I ran the Belvoir half marathon in 1hr 40m 58s, an improvement of 35s, and this weekend ran London marathon in 3hr 41m 22s, an improvement of 3m 26s and 3rd overall in vet 70 category. I can only think that these new 'personal bests' are in no small way a result of using your red POWERbreathe, which of course I shall continue to use daily.
Product use: Workplace
I would just like to say how impressed I am with the POWERbreathe.
Review by Thomas Batty, UK
Posted 20 September 2012
I have been training for RMA Sandhurst since September and as a requirement for the British Army it is stated that male's must be able to run 1.5 miles in less than 10.30 minutes. When I started training my time was always around 10 minutes then it came down to 9.30 and I was stuck at this time for a few months. My friend informed me about the POWERbreathe and I have been using the advanced product for around 40 days. I have already taken 35 seconds off my time. I accredit this to POWERbreathe and I will continue using the product and recommending it for the rest of my career. I have not only noticed improvements in my running times, but also as a keen footballer, 90 minutes is not a struggle at all and in the final stages of the game I have often been in a much better physical state than my opponent.
Product use: Workplace
Inspiratory Muscle Training is an important part of the regime for a number of my elite athletes
Review by Jeremy Oliver, Strength and Conditioning Coach
Posted 20 September 2012
I have been using Inspiratory Muscle Training with POWERbreathe for eight years as part of the strength and conditioning program for Elite Athletes, such as Leisel Jones, Grant Hackett, Michael Klim, Sean Wroe and Madeleine Pape. Inspiratory Muscle Training is an important part of the regime for a number of my elite swimmers and runners in the lead up to the 2010 Commonwealth Games and 2012 London Olympics.
Product use: Workplace
Made a real difference during training
Review by Dave
Posted 20 September 2012
I stumbled across this and thought any help would be great. I noticed the effects within a week, and over time losing breathlessness all together. This helped me smash the commando course - many thanks!
Product use: Workplace