Repeated Sprint Training in Hypoxia: Case Report of Performance Benefits in a Professional Cyclist.

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_3CD7FF9A333F
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Repeated Sprint Training in Hypoxia: Case Report of Performance Benefits in a Professional Cyclist.
Journal
Frontiers in sports and active living
Author(s)
Faiss Raphael, Rapillard Arnaud
ISSN
2624-9367 (Electronic)
ISSN-L
2624-9367
Publication state
Published
Issued date
2020
Peer-reviewed
Oui
Volume
2
Pages
35
Language
english
Notes
Publication types: Case Reports
Publication Status: epublish
Abstract
Repeated sprint training in hypoxia (RSH) has gained unprecedented popularity among the various strategies using hypoxia as an additional stimulus to improve performance. This case study reports the benefits of 150 repeated sprints in normobaric hypoxia over 10 days in a professional cyclist. After 3 weeks of endurance training in November, the cyclist performed five RSH sessions at a simulated altitude of 3,300 m on his own bicycle attached to an indoor trainer in a hypoxic chamber (FiO <sub>2</sub> 14.1 ± 0.1%, PiO <sub>2</sub> 94.6 ± 1.4 mm Hg). Each session consisted of four blocks of seven all-out sprints of 6 s interspersed with 14 s active recovery (for a total of 126 s per block). After 12 min of warm-up with a single isolated 6 s reference sprint, the sessions included a first and a second sprinting block with 4 min 54 s active recovery in-between. After 9 min 54 s active recovery including an isolated 6 s reference sprint, a third and a fourth block were performed with 4 min 54 s active recovery in-between, before an active cool-down of 9 min 54 s. The total duration was thus of 50 min per session for a total hypoxic exposure of 250 min exercising. Power output and heart rate were monitored at 1 Hz. Lactate concentration ([La]) and pulse oxygen saturation (SpO <sub>2</sub> ) were measured at the start and end of each block during the first and fifth training session. Basal SpO <sub>2</sub> was of 83% during session one and 85.5% during session five. When comparing the first and fifth training session, peak power increased for the best 1 s value (+8%) and the best 5 s average (+10%) to reach 1,041 W and 961 W, respectively. Average power for all blocks (including active recoveries) increased from 334 to 354 W with a similar average heart rate during the sessions (146' <sup>.</sup> min <sup>-1</sup> ). Peak [La] was increased from 12.3 to 13.8 mmol <sup>.</sup> l <sup>-1</sup> . In conclusion, this case report illustrates a 10-days RSH intervention perceived as efficient in a professional cyclist and shown to improve total work (6-s sprints) produced for a similar physiological strain.
Keywords
case study, cycling, hypoxia, performance, sprint
Pubmed
Open Access
Yes
Create date
16/04/2020 8:29
Last modification date
24/02/2021 6:24
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