The Evidence for Inspiratory Muscle Training

GreatHealthGear synthesises published research rather than conducting its own testing. The IMT evidence base is substantial compared to most breathwork device categories.

Illi et al. (2012, *International Journal of Sports Medicine*) — a meta-analysis of 46 studies — found that IMT significantly improved endurance performance across cycling, rowing, swimming, and running. The effect was most consistent for cycling time trials. Studies using threshold IMT (the POWERbreathe method) dominated the evidence base.
McConnell (2009) systematic review of respiratory muscle training documented consistent improvements in inspiratory muscle strength and endurance across athletic and clinical populations. Protocol: 30 maximal efforts twice daily at 50–60% MIP for 4–8 weeks.

How to Choose the Right IMT Device

Choose POWERbreathe Medic Plus ($80) if:

  • You want the research-validated threshold IMT method at minimum cost
  • You are self-directing your protocol and do not need app guidance
  • Your physiotherapist has recommended IMT and you want the simplest credible tool

Choose Airofit Active ($149) if:

  • You want app-guided sessions with progress tracking
  • You are new to IMT and want guided protocol management
  • You want to trial the Airofit experience before committing to the Pro

Choose Airofit Pro 2.0 ($279) if:

  • You are a committed athlete who wants progressive overload tracking and expiratory training
  • Vital capacity measurement and lung age estimation are useful metrics for you
  • You want the most comprehensive guided protocol library available
Consult a healthcare professional before beginning respiratory muscle training if you have asthma, COPD, cardiovascular disease, or other respiratory conditions. Do not use respiratory trainers during acute illness.