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Published in: European Journal of Applied Physiology 3/2022

01-03-2022 | Fatigue | Original Article

Repeated sprint training under hypoxia improves aerobic performance and repeated sprint ability by enhancing muscle deoxygenation and markers of angiogenesis in rugby sevens

Authors: Wadee Pramkratok, Tongthong Songsupap, Tossaporn Yimlamai

Published in: European Journal of Applied Physiology | Issue 3/2022

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Abstract

Objective

To evaluate the effects of repeated sprint (RS) training in hypoxia on aerobic performance, repeated sprint ability (RSA), and muscle oxygenation in Rugby Sevens.

Methods

Fourteen Rugby Sevens players were randomly allocated into hypoxic (RSH, FIO2 = 14.5%, n = 7) or normoxic (RSN, FIO2 = 20.9%, n = 7) groups. Both groups underwent RS training consisting of 3 sets of 6-s × 10 sprints at 140% of velocity at peak oxygen uptake (\(vV{\text{O}}_{2} {\text{peak}}\)) on a motorized treadmill, 3 days/week for 6 weeks in addition to usual training. Hematological variables, hypoxia-inducible factor-1 alpha (HIF-1α), and vascular endothelial growth factor (VEGF) concentrations were measured. Aerobic performance, RSA, and muscle oxygenation during the running-based anaerobic sprint (RAS) test were analyzed.

Results

RSH caused no changes in hemoglobin concentration and hematocrit but significant improvements in \(V{\text{O}}_{2} {\text{peak}}\) (7.5%, p = 0.03, ES = 1.07), time to exhaustion (17.6%, p = 0.05, ES = 0.92), and fatigue index (FI, − 12.3%, p = 0.01, ES = 1.39) during the RSA test compared to baseline but not RSN. While ∆deoxygenated hemoglobin was significantly increased both after RSH and RSN (p < 0.05), ∆tissue saturation index (− 56.1%, p = 0.01, ES = 1.35) and ∆oxygenated hemoglobin (− 54.7%, p = 0.04, ES = 0.97) were significantly decreased after RSH. These changes were concomitant with increased levels of HIF-1α and VEGF in serum after RSH with a strong negative correlation between ∆FI and ∆deoxygenated hemoglobin after RSH (r = − 0.81, p = 0.03).

Conclusion

There was minimal benefit from adding RSH to standard Rugby Sevens training, in eliciting improvements in aerobic performance and resistance to fatigue, possibly by enhanced muscle deoxygenation and increased serum HIF-1α and VEGF concentrations.
Literature
go back to reference Borg GA (1982) Psychophysical bases of perceived exertion. Med Sci Sports Exerc 14:377–381PubMed Borg GA (1982) Psychophysical bases of perceived exertion. Med Sci Sports Exerc 14:377–381PubMed
go back to reference Czuba M, Waskiewicz Z, Zajac A, Poprzecki S, Cholewa J, Roczniok R (2011) The effects of intermittent hypoxic training on aerobic capacity and endurance performance in cyclists. J Sports Sci Med 10:175–183PubMedPubMedCentral Czuba M, Waskiewicz Z, Zajac A, Poprzecki S, Cholewa J, Roczniok R (2011) The effects of intermittent hypoxic training on aerobic capacity and endurance performance in cyclists. J Sports Sci Med 10:175–183PubMedPubMedCentral
go back to reference Millet GP, Girard O, Beard A, Brocherie F (2019) Repeated sprint training in hypoxia–an innovative method. Deutsche Zeitschrift Für Sportmedizin 2019:115–122CrossRef Millet GP, Girard O, Beard A, Brocherie F (2019) Repeated sprint training in hypoxia–an innovative method. Deutsche Zeitschrift Für Sportmedizin 2019:115–122CrossRef
go back to reference Olfert IM, Breen EC, Mathieu-Costello O, Wagner PD (2001) Chronic hypoxia attenuates resting and exercise-induced VEGF, flt-1, and flk-1 mRNA levels in skeletal muscle. J Appl Physiol 90:1532–1538CrossRef Olfert IM, Breen EC, Mathieu-Costello O, Wagner PD (2001) Chronic hypoxia attenuates resting and exercise-induced VEGF, flt-1, and flk-1 mRNA levels in skeletal muscle. J Appl Physiol 90:1532–1538CrossRef
go back to reference Sinex JA, Chapman RF (2015) Hypoxic training methods for improving endurance exercise performance. J Sport Health Sci 4:325–332CrossRef Sinex JA, Chapman RF (2015) Hypoxic training methods for improving endurance exercise performance. J Sport Health Sci 4:325–332CrossRef
Metadata
Title
Repeated sprint training under hypoxia improves aerobic performance and repeated sprint ability by enhancing muscle deoxygenation and markers of angiogenesis in rugby sevens
Authors
Wadee Pramkratok
Tongthong Songsupap
Tossaporn Yimlamai
Publication date
01-03-2022
Publisher
Springer Berlin Heidelberg
Keyword
Fatigue
Published in
European Journal of Applied Physiology / Issue 3/2022
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-021-04861-8

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