Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

3.1K
In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
3.1K
COPD: Pathogenesis and Clinical Features01:20

COPD: Pathogenesis and Clinical Features

1.8K
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
1.8K
COPD: Management Using Bronchodilators and Corticosteroids01:26

COPD: Management Using Bronchodilators and Corticosteroids

748
Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
748
Predicting Molecular Geometry02:27

Predicting Molecular Geometry

45.5K
VSEPR Theory for Determination of Electron Pair Geometries
45.5K
What are Biogeochemical Cycles?00:54

What are Biogeochemical Cycles?

39.2K
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
39.2K
The Water Cycle01:00

The Water Cycle

28.1K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
28.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Does an interval exercise session compared to a continuous exercise session prevent desaturation induced by exercise in patients with COPD?

Respiratory medicine and research·2026
Same author

Peak cardiorespiratory and metabolic responses during the six-minute stepper test in people with COPD: A pre-planned cross-sectional ancillary study.

Pulmonology·2026
Same author

Why fan therapy does not yet demonstrate enhanced training benefits in people with chronic respiratory disease.

The European respiratory journal·2026
Same author

Prognostic factors in interstitial lung disease-associated pulmonary hypertension: data from the HYPID cohort and the French Pulmonary Hypertension Registry.

The European respiratory journal·2026
Same author

Expert consensus-based clinical practice guidelines for Care and weaning procedures in tracheostomized ICU patients after invasive mechanical ventilation: a joint statement by the Intensive Care Physiotherapy Society (SKR) and the French Intensive Care Society (SRLF).

Annals of intensive care·2026
Same author

Minimum clinically important difference for the Urinary Symptom Profile questionnaire in people attending pulmonary rehabilitation.

Pulmonology·2026

Related Experiment Video

Updated: Jan 21, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
07:10

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Published on: August 24, 2019

10.3K

Changes in Cycle-Ergometer Performance during Pulmonary Rehabilitation Predict COPD Exacerbation.

Jonas Comes1, Guillaume Prieur2,3,4, Yann Combret3,4

  • 1IFMK Rouen , Rouen , France.

COPD
|August 8, 2019
PubMed
Summary

Changes in physical capacity during pulmonary rehabilitation can predict exacerbations in patients with Chronic Obstructive Pulmonary Disease (COPD). A 17% drop in cycle ergometer performance may signal an impending COPD exacerbation.

Keywords:
COPDexacerbationpredicitivepulmonary rehabilitation

More Related Videos

Author Spotlight: Traditional Chinese Medicine for Sleep Disorders in Acute COPD — A Safe, Cost-Effective Approach
04:53

Author Spotlight: Traditional Chinese Medicine for Sleep Disorders in Acute COPD — A Safe, Cost-Effective Approach

Published on: October 18, 2024

1.4K
Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation
09:42

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation

Published on: November 8, 2013

13.9K

Related Experiment Videos

Last Updated: Jan 21, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
07:10

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Published on: August 24, 2019

10.3K
Author Spotlight: Traditional Chinese Medicine for Sleep Disorders in Acute COPD — A Safe, Cost-Effective Approach
04:53

Author Spotlight: Traditional Chinese Medicine for Sleep Disorders in Acute COPD — A Safe, Cost-Effective Approach

Published on: October 18, 2024

1.4K
Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation
09:42

Using Continuous Data Tracking Technology to Study Exercise Adherence in Pulmonary Rehabilitation

Published on: November 8, 2013

13.9K

Area of Science:

  • Pulmonary Medicine
  • Rehabilitation Science

Background:

  • Chronic Obstructive Pulmonary Disease (COPD) exacerbations significantly impact patient health and require early detection.
  • Changes in physical capacity during pulmonary rehabilitation may offer predictive insights into exacerbation risk.

Purpose of the Study:

  • To investigate if changes in physical capacity during pulmonary rehabilitation can predict COPD exacerbations.
  • To identify a performance threshold indicative of an increased risk of exacerbation.

Main Methods:

  • Retrospective analysis of 40 patients with COPD undergoing pulmonary rehabilitation.
  • Collected performance data and dyspnea levels from cycle ergometer and treadmill sessions before and after exacerbations.
  • Analyzed 70 exacerbations to identify significant changes in physical performance.

Main Results:

  • A significant decrease in cycle ergometer performance was observed in the session preceding an exacerbation (mean difference: 74.5%, p < 0.01).
  • An optimal threshold of a 17% decrease in performance compared to the previous session predicted exacerbations with a sensitivity of 0.46 and specificity of 0.83.
  • Area under the curve was 0.65 (p < 0.01), indicating predictive value.

Conclusions:

  • Analysis of cycle ergometer performance data is a potentially valuable method for predicting COPD exacerbations.
  • Monitoring physical capacity changes during pulmonary rehabilitation can aid in early identification of patients at risk for exacerbations.