Spirometric values in Tunisian children: relationship with pubertal status

Area of Science:

• Pediatric Pulmonology
• Growth and Development
• Anthropometry

Background:

• Limited understanding of pubertal stage impact on lung function in Tunisian children.
• Need for age-appropriate lung function reference values.

Purpose of the Study:

• To investigate the relationship between lung function parameters and pubertal stage in healthy Tunisian children.
• To assess the influence of anthropometric parameters on this relationship.

Main Methods:

• Spirometry performed on 684 healthy Tunisian children (8-16 years).
• Pubertal status assessed using the Tanner Method for both sexes.
• Analysis of covariance used to adjust for anthropometric variables.

Main Results:

• Significant increases in forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), peak expiratory flow (PEF), maximal expiratory flow at 50% of FVC (MEF50), and maximal mid-expiratory flow (MMEF25-75) with pubertal stage.
• Pubertal status demonstrated an independent effect on several lung function parameters after adjusting for height and age.
• Height and age showed a positive correlation with lung function parameters across pubertal stages.

Conclusions:

• Lung function parameters in healthy Tunisian school children increase with age, height, and pubertal stage.
• Pubertal status is a significant factor in lung function assessment and should be considered for standardization.
• Relying solely on height for lung function standardization is insufficient; pubertal status offers a more comprehensive approach.