Diaphragm Response to Breathing Resistance
Author Information
Author(s): Locher Chrystèle, Raux Mathieu, Fiamma Marie-Noelle, Morélot-Panzini Capucine, Zelter Marc, Derenne Jean-Philippe, Similowski Thomas, Straus Christian
Primary Institution: Université Pierre et Marie Curie-Paris 6
Hypothesis
The study aims to test whether inspiratory resistive loading affects the diaphragm's response to transcranial magnetic stimulation.
Conclusion
Inspiratory resistive breathing facilitates the diaphragm response to TMS while it does not increase the automatic drive to breathe.
Supporting Evidence
- Breathing against a 20 cmH2O/L/s resistance significantly reduced respiratory frequency.
- The diaphragm's response to TMS was facilitated during resistive breathing.
- No significant change in the amplitude of diaphragm MEPs was observed.
Takeaway
When people breathe against resistance, their diaphragm responds better to brain stimulation, but it doesn't make them want to breathe more.
Methodology
Six healthy volunteers were tested under different breathing conditions with and without inspiratory resistances while their diaphragm responses were measured using transcranial magnetic stimulation.
Limitations
The study involved a small sample size and may not generalize to all populations.
Participant Demographics
6 healthy subjects (2 women, 4 men, aged 22-25 years)
Statistical Information
P-Value
0.03
Confidence Interval
95%CI from -1.79 to -0.016
Statistical Significance
p = 0.03
Digital Object Identifier (DOI)
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