Related Experiment Video
Updated: Aug 8, 2026

Training Rats to Voluntarily Dive Underwater: Investigations of the Mammalian Diving Response
Published on: November 12, 2014
Human Sleep Apneas and Animal Diving Reflexes: The Comparative Link
Ruben V. Rial1, Ferràn Barbal, Francesca Cañellas
1Departmento de Biologia F. i C.S., Universitat de les Illes Balears, Palma de Mallorca, Spain.
Diving animals and humans with sleep apnea share physiological adaptations for surviving low oxygen. This review explores these similarities to improve understanding of sleep apnea.
Area of Science:
- Comparative physiology
- Evolutionary biology
- Sleep medicine
Background:
- Vertebrates have evolved adaptations to survive low oxygen conditions.
- Diving animals exhibit remarkable tolerance to anoxia through specific physiological strategies.
Purpose of the Study:
- To review and present evidence of physiological similarities between diving animals and humans experiencing sleep apnea.
- To identify potential research avenues for enhancing clinical understanding of sleep apnea.
Main Methods:
- Literature review of physiological adaptations in diving animals.
- Comparative analysis of these adaptations with human sleep apnea pathophysiology.
Main Results:
- Diving animals utilize increased oxygen stores, asphyxia resistance, and reduced metabolic rate to manage anoxia.
- These strategies show parallels with physiological responses observed in humans with sleep apnea.
Conclusions:
- Sleep apnea in humans may involve ancient physiological mechanisms shared with diving vertebrates.
- Further research into these shared adaptations could offer novel insights into sleep apnea treatment and management.
Related Concept Videos
Assessment of Ventilation II: Respiratory Depth and Rhythm
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:
Alterations in Respiration II
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
Neural Control of Respiration
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Other Factors Affecting Respiration Centers
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical level,...
Hyperpnea and Hyperventilation
Physical Assessment of the Respiratory Tract II: Inspection
Chest Configuration
The chest configuration can...

