Pulmonary function in children after a single scuba dive

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.