7% performance gain and 30% muscle growth in 6 weeks
A 2022 pilot study by the Institute of Sport at Manchester Metropolitan University reported significant lung and diaphragm improvements in healthy individuals after six weeks of training with the Airofit smart breathing system
The study conclusions
Dr. Christopher Morse conducted the study and demonstrated how the 19 participants’ max inspiratory pressure (MIP) and max expiratory pressure (MEP) increased by 45% and 20%, respectively training with the CrossFit program. These results were traced back to the diaphragm, which grew by approximately 30%. With this significant growth in the musculature of the diaphragm participants on average improved their exercise efficiency by 7% and produced more power for a longer period without an increase in VO2max.
Why the improvement?
Dr. Morse noted that the results were promising and especially showed possibilities for improving the condition in those with thinner or weaker diaphragms. The diaphragm is the primary breathing muscle. The significant growth of this muscle likely gave all participants better power distribution as their diaphragm needed less oxygen to produce the same amount of work. This oxygen surplus could then have been distributed elsewhere such as to the “locomotive” muscles like the quadriceps.