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Sonographic evaluation of diaphragmatic function during breathing control.

A Y M Jones1, S P C Ngai2, M T C Ying3

  • 1a Discipline of Physiotherapy, Faculty of Health Sciences , The University of Sydney , Sydney , Australia.

Physiotherapy Theory and Practice
|May 26, 2017
PubMed
Summary

Breathing control significantly improved diaphragmatic excursion after exercise compared to normal breathing. This technique enhances diaphragmatic function, as shown by non-invasive ultrasonography.

Keywords:
Breathing controldiaphragmdiaphragmatic excursionultrasonography

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Area of Science:

  • Physiology
  • Respiratory Mechanics
  • Diagnostic Imaging

Background:

  • Diaphragmatic excursion is crucial for effective respiration.
  • Breathing techniques can influence respiratory muscle function.
  • Objective assessment of diaphragmatic function is valuable.

Purpose of the Study:

  • To evaluate the impact of a specific breathing control (BC) technique on sonographic diaphragmatic excursion post-exercise.
  • To compare diaphragmatic function between individuals using BC and those using their natural breathing pattern.

Main Methods:

  • A randomized, assessor-blinded study involving 20 physiotherapy students.
  • Participants performed a Chester step test.
  • Diaphragmatic excursion and respiratory rate were measured using ultrasonography before and after the test, with one group employing BC during recovery.

Main Results:

  • The breathing control group (Group BC) exhibited a significantly lower respiratory rate post-exercise compared to the control group (Group CON).
  • Sonographic evaluation revealed significantly greater diaphragmatic excursion in Group BC at 1, 2, and 3 minutes post-exercise.
  • Inspiratory time and the speed of diaphragmatic contraction did not show significant differences between groups.

Conclusions:

  • Applying breathing control post-exercise leads to enhanced diaphragmatic excursion.
  • Non-invasive ultrasonography provides an objective method to assess the relationship between breathing techniques and diaphragmatic function.