Bronchodilation induced by muscular contraction in spontaneously breathing rabbits: Neural or mechanical?

Highlights ► Mechanical and reflex mechanisms contribute to the bronchodilation of exercise. ► Cooling the vagi alters the reflex bronchodilation. ► Ventilatory and airway responses to exercise were found dissociated by vagal cooling. ► Bronchodilation at exercise is contributed to by a neural, non...

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Published in:Respiratory physiology & neurobiology 2012-03, Vol.180 (2), p.311-315
Main Authors: Marchal, François, Evrot, Emeline, Schweitzer, Cyril, Demoulin, Bruno, Poussel, Mathias, Varechova, Silvia
Format: Article
Language:English
Subjects:
Airway Resistance - physiology
Animals
Biomechanical Phenomena
Bronchi - innervation
Bronchi - physiology
Bronchodilation
Cold Temperature
Data Interpretation, Statistical
Exercise
Lung Volume Measurements
Medical Education
Muscle contraction
Muscle Contraction - physiology
Nervous system
Oscillations
Physical training
Pulmonary/Respiratory
Rabbit
Rabbits
Reflex - physiology
Reflexes
Respiration
Respiratory Mechanics - physiology
Respiratory Muscles - innervation
Respiratory Muscles - physiology
Respiratory system
Respiratory tract
Spontaneous breathing
Temperature effects
Vagal cooling
Vagus nerve
Vagus Nerve - physiology
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Summary:Highlights ► Mechanical and reflex mechanisms contribute to the bronchodilation of exercise. ► Cooling the vagi alters the reflex bronchodilation. ► Ventilatory and airway responses to exercise were found dissociated by vagal cooling. ► Bronchodilation at exercise is contributed to by a neural, non vagal mechanism.
ISSN:1569-9048
1878-1519
DOI:10.1016/j.resp.2011.12.006