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Related Concept Videos

Neural Control of Respiration01:18

Neural Control of Respiration

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The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
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Updated: Nov 3, 2025

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
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Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

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Novel Real-Time OEP Phase Angle Feedback System for Dysfunctional Breathing Pattern Training-An Acute Intervention

Carol M E Smyth1, Samantha L Winter2, John W Dickinson1

  • 1School of Sport & Exercise Sciences, University of Kent, Canterbury CT2 7NB, UK.

Sensors (Basel, Switzerland)
|June 2, 2021
PubMed
Summary

Real-time feedback using optoelectronic plethysmography (OEP) phase angle shows promise for improving dysfunctional breathing patterns. This breathing retraining technique enhances chest wall movement synchrony, offering a new approach for individuals with DBP.

Keywords:
dysfunctional breathingexerciseinterventionoptoelectronic plethysmographyphase angle

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Area of Science:

  • Respiratory Physiology
  • Biomechanics
  • Rehabilitation Technology

Background:

  • Dysfunctional breathing patterns (DBP) negatively impact quality of life and exercise performance.
  • Breathing retraining is a primary treatment for correcting DBP, aiming to improve chest wall movement synchrony.
  • Optoelectronic plethysmography (OEP) is a non-invasive 3D motion capture technique for assessing chest wall movement.

Purpose of the Study:

  • To evaluate a novel real-time OEP phase angle and volume feedback system as an acute breathing retraining intervention.
  • To compare the effectiveness of combined phase angle and volume feedback versus volume feedback alone in improving breathing synchrony.

Main Methods:

  • Eighteen individuals with DBP underwent an incremental cycle test with OEP monitoring.
  • Participants were randomized into a control group (volume feedback) or experimental group (volume + phase angle feedback).
  • Chest wall movement synchrony was assessed by calculating ribcage-abdomen phase angles (RcAbPhase, RCpAbPhase, AbSPhase) pre- and post-intervention.

Main Results:

  • The experimental group showed significant improvements in all measured phase angles post-intervention (p < 0.01).
  • Significant increases in RcAbPhase, RCpAbPhase, and AbSPhase indicate enhanced breathing synchrony in the experimental group.
  • These findings suggest a reversion towards a healthier breathing pattern following the intervention.

Conclusions:

  • Real-time OEP phase angle feedback can acutely improve dysfunctional breathing patterns.
  • This novel feedback system demonstrates feasibility for breathing pattern retraining in individuals with DBP.
  • The study provides the first evidence of OEP phase angle feedback's efficacy in improving breathing synchrony.