Oxygen uptake in repeated cycling sprints against different loads is comparable between men and preadolescent boys
Authors
Theos, ApostolosBogdanis, Gregory C.
Jansson, Daniel
Nevill, Alan M.
Papaspyrou, Aggeliki
Maridaki, Maria
Issue Date
2022-03-11
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Children recover faster than adults in repeated sprints, but it is unclear if their aerobic responses differ. Purpose: This study tested the hypothesis that aerobic response (VO2) during repeated sprints is greater in preadolescent boys than in men. Further, this study compared normalization with conventional ratio-scaling and scaling with the use of body mass (BM) as a covariate. Methods: Nine boys (age: 11.8±0.6years, swimmers) and 11 men (age: 21.7±0.6years, recreational athletes) performed 10 maximal 6-s cycling sprints separated by 24-s of passive recovery, against two loads (optimum and 50% of optimum). Oxygen uptake (VO2) was measured continuously. Results: Men’s mean power output (MPO) was greater than boys in each sprint, both in absolute (unscaled) values (p<0.05) and when adjusted for lean leg volume (p<0.05). Children had lower absolute VO2 (p<0.05) than men, but when it was adjusted for BM or power-output, VO2 was comparable between men and boys. Thus, most of the difference in VO2 between men and boys was due to body size and power-output differences. Conclusion: Our results suggest that men and boys have similar VO2 during repeated sprints when appropriately adjusted to body mass or power output. Results highlight the importance of using appropriate scaling methods to compare adults’ and children’s aerobic responses to high-intensity exercise.Citation
Theos A, Bogdanis GC, Jansson D, Nevill AM, Papaspyrou A and Maridaki M (2022) Oxygen Uptake in Repeated Cycling Sprints Against Different Loads Is Comparable Between Men and Preadolescent Boys. Front. Physiol. 13:814056. doi: 10.3389/fphys.2022.814056Publisher
Frontiers MediaJournal
Frontiers in PhysiologyAdditional Links
https://www.frontiersin.org/articles/10.3389/fphys.2022.814056/fullType
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enDescription
© 2022 The Authors. Published by Frontiers Media. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.3389/fphys.2022.814056ISSN
1664-042XEISSN
1664-042Xae974a485f413a2113503eed53cd6c53
10.3389/fphys.2022.814056
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Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/