Andningens roll vid aerob träning: effekter av nasal andning på fysiologiska variabler : En strukturerad litteraturöversikt

Sammanfattning

The physiological effects of nasal breathing compared to oral/oronasal breathing during aerobic exercise are rarely investigated. The purpose of this structured literature review is to examine how nasal breathing affects various physiological variables related to aerobic capacity during aerobic exercise compared to oral/oronasal breathing. A systematic search was conducted on PROSPERO, PubMed, SPORTDiscus and Web of Science to ensure the absence of previous systematic reviews regarding the topic and to identify relevant articles for the literature review. Assessment of risk of bias was conducted using SBU's assessment tools. Sampling of the selection process, bias assessment, and data extraction was conducted by the supervisor.No previous systematic literature reviews regarding the research topic were identified. Twelve studies were included in this literature review, comprising a total of 156 healthy participants and participants with mild/moderate asthma. The included studies generally had a high risk of bias. Most of the studies showed significant differences in variables related to aerobic capacity between nasal breathing and oral breathing. Nasal breathing generally resulted in significantly lower values in variables such as VO2, VE/VO2, VE/VCO2, FEO2, FECO2, PetO2, PetCO2, VE, RR, FEV1, with no or small significant differences in VO2max, compared to oral breathing.The findings of this literature review may suggest that nasal breathing may have potential physiological benefits for aerobic capacity compared to oral breathing, with possible effects such as a more economical ventilation and an improved gas exchange. However, the reliability and generalizability of the results are limited by methodological weaknesses and a high risk of bias in the included studies. The current evidence is too weak to establish definitive effects, which means that firm conclusions cannot be drawn.