P < 0.05 represents a significant difference in results. * chi-square test. BMI: body mass index; %BF: body fat percentage; WC: waist circumference; FVC: forced vital capacity; FEV1: forced expiratory volume in one second
The authors declare that they have no conflicts of interest.
Ethical approval
The study was performed in accordance with the Helsinki Declaration (2013) and approved by the Ethics Committee of the Privolzhsky Research Medical University (Protocol No. 8 dated 27.05.2022). Informed consent was obtained from patients aged 15 to 17 years and from the parents of patients under the age of 15 in accordance with Federal Law No. 323 dated 11/21/2011, “Fundamentals of legislation of the Russian Federation on the protection of public health”.
Consent to participate
Informed consent to participate in the study was obtained from patients aged 15 to 17 years and from the parents of patients under the age of 15.
Consent to publication
Not applicable.
Availability of data and materials
The data used to support the findings of this study are available from the corresponding author upon request.
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