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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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Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

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Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
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Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

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Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
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Respiratory Capacities01:24

Respiratory Capacities

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Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...
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Respiratory Volumes01:15

Respiratory Volumes

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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Factors Affecting Respiration01:24

Factors Affecting Respiration

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Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:
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Related Experiment Video

Updated: Jul 6, 2025

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
08:34

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

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Respiratory function in healthy long-term meditators: a systematic review.

L J U Karunarathne1, W A D L Amarasiri2, A D A Fernando2

  • 1Department of Physical Medicine, National Hospital of Colombo, Colombo, 00700, Sri Lanka. rhdc201914@stu.cmb.ac.lk.

Systematic Reviews
|January 3, 2024
PubMed
Summary

Long-term meditation practice is linked to slower breathing rates at rest and during practice, with more experience amplifying these effects. Limited data exists for spirometry in practitioners with over three years of experience.

Keywords:
Healthy long-term meditatorsLong-term meditationMeditation experienceRespiratory functionRespiratory rateSpirometry

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Area of Science:

  • Physiology
  • Mind-Body Medicine

Background:

  • Limited research exists on the long-term effects of meditation on respiratory function.
  • This systematic review synthesizes current evidence on respiratory parameters in healthy long-term meditators (LTMs).

Approach:

  • Systematic literature search of multiple databases (PubMed, EMBASE, Scopus, etc.) from 1950 to August 2023.
  • Included controlled and observational studies on healthy LTMs, assessing respiratory function at rest and during meditation.
  • Utilized PRISMA guidelines and Joanna Briggs Institute Critical Appraisal Tools for study selection and quality assessment.

Key Points:

  • Long-term meditation is associated with significantly slower resting respiratory rates (RR) compared to controls.
  • Meditators exhibited a further reduction in RR during meditation practice, with greater experience correlating with slower rates.
  • Peak expiratory flow rate (PEFR) was significantly higher in LTMs, but tidal volume and vital capacity showed no significant differences.

Conclusions:

  • Long-term meditation practice is associated with slower baseline respiratory rates and an immediate reduction in RR during practice.
  • Increased meditation experience appears to enhance these respiratory effects.
  • Further research is needed on spirometry parameters, particularly for LTMs with over three years of practice.