Article Text
Abstract
Objectives To compare laboratory test results and lung function of adolescent organised sports participants (SP) with non-participants (NP).
Methods In this cross-sectional study, laboratory tests (haemoglobin, iron status), and flow-volume spirometry were performed on SP youths (199 boys, 203 girls) and their NP peers (62 boys, 114 girls) aged 14–17.
Results Haemoglobin concentration <120/130 g/L was found in 5.8% of SP and 5.1% NP (OR 1.20, 95% CI 0.54 to 2.68). Ferritin concentration below 15 µg/L was found in 22.7% of both SP and NP girls. Among boys ferritin <30 µg/L was found in 26.5% of SP and 30.2% of NP (OR 0.76, 95% CI 0.40 to 1.47). Among SP iron supplement use was reported by 3.5% of girls and 1.5% of boys. In flow-volume spirometry with bronchodilation test, 7.0% of SP and 6.4% of NP had asthma-like findings (OR 1.17, 95% CI 0.54 to 2.54); those using asthma medication, that is, 9.8% of SP and 5.2% of NP were excluded from the analysis.
Conclusions Screening for iron deficiency is recommended for symptomatic persons and persons engaging in sports. Lung function testing is recommended for symptomatic persons and persons participating in sports in which asthma is more prevalent.
- Iron metabolism
- Asthma
- Adolescent
- Sports & exercise medicine
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Footnotes
Contributors All the authors contributed to the substance and design of the study. SK and JP compiled and collated the sections of the study. KT carried out the literature search. SK and JV collected and arranged the preliminary data. ON contributed to the laboratory analyses. KT and JV conducted the data analyses and all the authors participated in the interpretation of data. KT, PK and JP wrote the first draft of the paper and all authors provided substantive feedback on the paper and contributed to the final manuscript. All authors have approved the submitted version of the manuscript. JP acts as the guarantor.
Funding This study was financially supported by the Finnish Ministry of Education and Culture (major, grant number: 6/091/2011) and Ministry of Social Affairs and Health (minor, grant number: 152/THL/TE/2012).
Competing interests None declared.
Patient consent for publication The adolescents and their guardians provided written consent to participate in the study, and the adolescents were told that they could retract their consent at a later date.
Ethics approval The study conforms to the declaration of Helsinki. A positive statement from the Ethics Committee of healthcare District of Central Finland was received (record number 23U/2012). Before the start of this study, we requested permission from all the sports clubs to take part. This permission was granted freely.
Provenance and peer review Not commissioned; externally peer reviewed.
Data availability statement The data may not be shared because permission was not requested from the participants or their parents.
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