Journal article
Increased air temperature during repeated-sprint training in hypoxia amplifies changes in muscle oxygenation without decreasing cycling performance
European Journal of Sport Science, Vol.23(1), pp.62-72
2023
Abstract
The present study aims to investigate the acute performance and physiological responses, with specific reference to muscle oxygenation, to ambient air temperature manipulation during repeated-sprint training in hypoxia (RSH). Thirteen male team-sport players completed one familiarisation and three experimental sessions at a simulated altitude of ∼3000 m (FIO2 0.144). Air temperatures utilised across the three experimental sessions were: 20°C, 35°C and 40°C (all 50% relative humidity). Participants performed 3 × 5 × 10-s maximal cycle sprints, with 20-s passive recovery between sprints, and 5 min active recovery between sets. There were no differences between conditions for cycling peak power, mean power, and total work (p>0.05). Peak core temperature (Tc) was not different between conditions (38.11 ± 0.36°C). Vastus lateralis muscle deoxygenation during exercise and reoxygenation during recovery was of greater magnitude in 35°C and 40°C than 20°C (p<0.001 for all). There was no condition × time interaction for Tc, skin temperature, pulse oxygen saturation, heart rate, rating of perceived exertion and thermal sensation (P>0.05). Exercise-induced increases in blood lactate concentration were higher in 35°C and 40°C than 20°C (p=0.010 and p=0.001, respectively). Integrating ambient temperatures up to 40°C into a typical RSH session had no detrimental effect on performance. Additionally, the augmented muscle oxygenation changes experienced during exercise and recovery in temperatures ≥35°C may indicate that the potency of RSH training is increased with additional heat. However, alterations to the training session may be required to generate a sufficient rise in Tc for heat training purposes.
Details
- Title
- Increased air temperature during repeated-sprint training in hypoxia amplifies changes in muscle oxygenation without decreasing cycling performance
- Authors/Creators
- M.C. Dennis (Author/Creator) - The University of Western AustraliaP.S.R. Goods (Author/Creator) - Murdoch UniversityM.J. Binnie (Author/Creator) - The University of Western AustraliaO. Girard (Author/Creator) - The University of Western AustraliaK.E. Wallman (Author/Creator) - The University of Western AustraliaB. Dawson (Author/Creator) - The University of Western AustraliaF. Billaut (Author/Creator) - Université LavalP. Peeling (Author/Creator) - The University of Western Australia
- Publication Details
- European Journal of Sport Science, Vol.23(1), pp.62-72
- Publisher
- Taylor & Francis
- Identifiers
- 991005541014607891
- Murdoch Affiliation
- Centre for Healthy Ageing; Murdoch Applied Sports Science Laboratory
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.172 Sports Science
- 1.172.648 Exercise Physiology
- Web Of Science research areas
- Sport Sciences
- ESI research areas
- Clinical Medicine