@article{01HAVMEB2PHS0RYT86GKHJ9Y8X,
  abstract     = {{Objectives: Repeated-sprint training in hypoxia (RSH) is an effective way of improving physical performance compared with similar training in normoxia. RSH efficiency relies on hypoxia severity, but also on the oxidative-glycolytic balance determined by both sprint duration and exercise-to-rest ratio. This study investigated the effect of 2 types of RSH sessions during a classic altitude camp in world-class female rugby sevens players. Methods: Sixteen players performed 5 RSH sessions on a cycle ergometer (simulated altitude: 3000 m above sea level [asl]) during a 3-week natural altitude camp (1850 m asl). Players were assigned to 2 different protocols with either a high (RSH1:3, sprint duration: 8-10 s; exercise-to-rest ratios: 1:2-1:3; n = 7) or a low exercise-to-rest ratio (RSH1:5, sprint duration: 5-15 s; exercise-to-rest ratios: 1:2-1:5; n = 9). Repeated-sprint performances (maximal and mean power outputs [PPOmax, and PPOmean]) were measured before and after the intervention, along with physiological responses. Results: PPOmax (962 [100] to 1020 [143] W, P = .008, Cohen d = 0.47) and PPOmean (733 [71] to 773 [91] W, P = .008, d = 0.50) increased from before to after. A significant interaction effect (P = .048, d = 0.50) was observed for PPOmean, with a larger increase observed in RSH1:3 (P = .003). No interaction effects were observed (P > .05) for the other variables. Conclusion: A classic altitude camp with 5 RSH sessions superimposed on rugby-sevens-specific training led to an improved repeated-sprint performance, suggesting that RSH effects are not blunted by prolonged hypoxic exposure. Interestingly, using a higher exercise-to-rest ratio during RSH appears to be more effective than when applying a lower exercise-to-rest ratio.}},
  author       = {{Bouten, Janne and Brick, Maxime and Saboua, Antoine and Hadjadj, Jean-Loup and Piscione, Julien and Margot, Chloé and Doucende, Gregory and Bourrel, Nicolas and Millet, Grégoire and Brocherie, Franck}},
  issn         = {{1555-0265}},
  journal      = {{INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE}},
  keywords     = {{female athletes,environmental stress,repeated-sprint ability,team sports}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{953--959}},
  title        = {{Effects of 2 different protocols of repeated-sprint training in hypoxia in elite female rugby sevens players during an altitude training camp}},
  url          = {{http://doi.org/10.1123/ijspp.2023-0121}},
  volume       = {{18}},
  year         = {{2023}},
}

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