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Related Concept Videos

Physiological Control of Respiration01:23

Physiological Control of Respiration

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Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
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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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Physiology of Respiration II: Neurogenic Control of Respiration01:22

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The neurogenic control of respiration coordinates various neural networks and pathways to regulate breathing rate and depth, meeting the body's oxygen and carbon dioxide exchange requirements. This system adapts to physiological and environmental conditions, ensuring optimal breathing patterns.
Central Control
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Mechanism of Breathing III: The Accessory Muscles01:21

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The Role of Accessory Muscles in the Respiratory System
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Other Factors Affecting Respiration Centers01:17

Other Factors Affecting Respiration Centers

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Breathing is primarily an involuntary activity regulated by the brainstem respiratory centers. However, it can also be consciously controlled, allowing us to hold our breath or take deeper breaths when needed. This voluntary control is facilitated by the cerebral motor cortex, which bypasses the medullary centers to stimulate the respiratory muscles directly.
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Mechanism of Breathing II: Expiration01:23

Mechanism of Breathing II: Expiration

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The Physiology of Expiration: A Seamless Respiratory Process
Expiration, or exhaling, is a complex physiological process that begins as the inspiratory muscles begin to relax. This relaxation triggers a series of events that epitomize the efficiency of the respiratory system.
Mechanism of Expiration:
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Author Spotlight: Integrating Tai Chi with Mindfulness Training to Achieve an Effective Mind-Body Exercise
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Tai Chi training reduced coupling between respiration and postural control.

Matthew L Holmes1, Brad Manor2, Wan-hsin Hsieh3

  • 1School of Health and Kinesiology, Georgia Southern University, Statesboro, GA, United States.

Neuroscience Letters
|November 1, 2015
PubMed
Summary

Tai Chi training reduced posturo-respiratory synchronization in older adults, improving the coordination between breathing and balance control. This suggests Tai Chi optimizes the interaction between these systems for better stability.

Keywords:
AgeingPostural controlTai Chi

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Area of Science:

  • Gerontology
  • Biomechanics
  • Neuroscience

Background:

  • Maintaining upright stance requires the postural control system to manage center-of-mass perturbations, including those from respiration.
  • Aging and disease elevate posturo-respiratory synchronization, the extent to which respiration influences postural sway.
  • Tai Chi integrates respiration and movement, potentially optimizing this crucial interaction.

Purpose of the Study:

  • To investigate the impact of Tai Chi on the interplay between respiration and postural control in elderly individuals.
  • To test the hypothesis that Tai Chi reduces posturo-respiratory synchronization by enhancing compensation for respiratory challenges.

Main Methods:

  • Randomized controlled trial with 12-week Tai Chi intervention versus an educational control group in older adults (mean age ~85 years).
  • Simultaneous recording of standing postural sway (force plate) and respiration (respiratory belt) under eyes-open and eyes-closed conditions.
  • Quantification of posturo-respiratory synchronization by analyzing the phase relationship between respiratory and sway oscillations.

Main Results:

  • Neither Tai Chi nor the control program altered average sway speed, sway magnitude, or respiratory rate.
  • Tai Chi intervention significantly reduced posturo-respiratory synchronization in both eyes-open and eyes-closed conditions compared to the control group (p<0.001).
  • Traditional measures of postural control and respiration remained unaffected by Tai Chi training.

Conclusions:

  • Tai Chi training effectively reduces posturo-respiratory synchronization in older adults, indicating improved coordination between breathing and balance.
  • The benefits of Tai Chi may stem from optimizing the functional interaction between the respiratory and postural control systems.
  • This study highlights a novel mechanism through which Tai Chi enhances stability in aging populations.