RT Journal Article SR Electronic T1 The Impact of Smoking on Maximum Oxygen Uptake JF Respiratory Care FD American Association for Respiratory Care SP respcare.08406 DO 10.4187/respcare.08406 A1 Julia R Sengbusch A1 Delaney L Tiernan A1 Nauris Tamulevicius A1 Mary P Martinasek YR 2021 UL http://rc.rcjournal.com/content/early/2021/02/16/respcare.08406.abstract AB BACKGROUND: This systematic literature review summarizes the impact of smoking on maximal oxygen uptake (maximum V̇O2).METHODS: Full-text articles were retrieved if the abstract met the assigned criteria. A total of 9 articles were included in the final review based on the inclusion and exclusion criteria. These included articles assessed the effects of tobacco smoking on maximum V̇O2 values.RESULTS: Half of the articles reported a significant difference in maximum V̇O2 scores between smokers and nonsmokers, with smokers having a lower maximum V̇O2. The other half of the articles did not identify significant differences between smokers and nonsmokers. One study found a significant difference in maximum V̇O2 in only one age group (ie, 20–29 y), but not any of the other age groups.CONCLUSIONS: More research is needed on the effects of smoking on maximum V̇O2 to better understand any relationships or causations.