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Pulmonary function in children after a single scuba dive.
F Lemaître1, C Tourny-Chollet, V Hamidouche
1Centre d'Etudes des Transformations des Activités Physiques et Sportives, Equipe d'Accueil UPRES No. 3832. Faculté des Sciences du Sport et de l'Education Physique de Rouen, Université de Rouen, Rouen, France. frederic.lemaitre@univ-rouen.fr
International Journal of Sports Medicine
|June 9, 2006
Summary
A single shallow dive in children caused temporary airway narrowing, affecting lung function parameters like forced expiratory volume in 1 second. These respiratory changes were observed shortly after diving, highlighting potential short-term impacts on young divers.
Area of Science:
- Pediatric Pulmonology
- Sports Medicine
- Diving Physiology
Background:
- Diving activities are popular among children.
- Limited research exists on the immediate respiratory effects of shallow diving in pediatric populations.
Purpose of the Study:
- To evaluate the acute respiratory effects of a single shallow air dive in children.
- To assess changes in pulmonary function parameters post-dive.
Main Methods:
- A study involving 18 young divers and 18 age-matched controls (9-13 years).
- Pulmonary function tests (volumes and expiratory flow rates) were conducted before and 10 minutes after a 3-meter, 25-minute air dive.
- Key parameters included forced expiratory volume in 1 second (FEV1), maximal voluntary ventilation, peak expiratory flow, and various maximal expiratory flow rates.
Main Results:
- No significant differences in pulmonary parameters were observed before the dive between groups.
- Ten minutes post-dive, significant decreases were noted in FEV1 (-8%), maximal voluntary ventilation (-5.3%), peak expiratory flow, MEF(50%) (-5.9%), MEF(25%) (-14.3%), FEF(25-75%) (-21.4%), and FEV1/FVC (-4.2%).
- The observed respiratory pattern indicated acute airway narrowing.
Conclusions:
- A single shallow dive can induce transient airway narrowing in children.
- These findings suggest potential short-term respiratory impacts following diving activities in this age group.
- No correlation was found between prior diving experience and the observed lung function changes.