Effects of hyperoxia during recovery from 5×30-s bouts of maximal-intensity exercise

Billy Sperlich, Christoph Johannes Zinner, Malte Krüger, Jennifer Wegrzyk, Silvia Achtzehn, Hans-Christer Holmberg

Publication: Contribution to journalJournal articlesResearch


We test the hypothesis that breathing oxygen-enriched air (F(I)O(2) = 100%) maintains exercise performance and reduces fatigue during intervals of maximal-intensity cycling. Ten well-trained male cyclists (age 25 ± 3 years; peak oxygen uptake 64.8 ± 6.2 ml · kg(-1) · min(-1); mean ± s) were exposed to either hyperoxic or normoxic air during the 6-min intervals between five 30-s sessions of cycling at maximal intensity. The concentrations of lactate and hydrogen ions [H(+)], pH, base excess, oxygen partial pressure, and oxygen saturation in the blood were assessed before and after these sprints. The peak (P = 0.62) and mean power outputs (P = 0.83) with hyperoxic and normoxic air did not differ. The partial pressure of oxygen was 4.2-fold higher after inhaling hyperoxic air, whereas lactate concentration, pH, [H(+)], and base excess (P ≥ 0.17) were not influenced. Perceived exertion towards the end of the 6-min periods after the fourth and fifth sprints (P < 0.05) was lower with hyperoxia than normoxia (P < 0.05). These findings demonstrate that the peak and mean power outputs of athletes performing intervals of maximal-intensity cycling are not improved by inhalation of oxygen-enriched air during recovery.

Original languageEnglish
JournalJournal of Sports Sciences
Issue number9
Pages (from-to)851-858
Number of pages8
Publication statusPublished - 01.05.2012

Research areas and keywords

  • Administration, Inhalation
  • Adult
  • Air
  • Athletes
  • Bicycling
  • Exercise
  • Exercise Test
  • Fatigue
  • Humans
  • Hydrogen-Ion Concentration
  • Hyperoxia
  • Ions
  • Lactic Acid
  • Male
  • Oxygen
  • Oxygen Consumption
  • Partial Pressure
  • Perception
  • Physical Exertion
  • Respiration
  • Rest
  • Young Adult


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