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Acute Effects of Post-Exercise Hyperoxia on Recovery in Cycling

15. juni 2026 opdateret af: Université Catholique de Louvain

This study examines whether exposition to hyperbaric oxygen after a road-race simulation can help competitive cyclists recover and perform better the following day.

Hyperbaric oxygen, which involves breathing oxygen inside a pressurized chamber, is used as a recovery method in elite and professional sport. Its effectiveness, however, remains controversial: despite this widespread use, there is a lack of solid scientific evidence that a single HBO session after strenuous endurance exercise actually improves recovery, or that clarifies how the amount of oxygen exposure influences any benefit.

The study includes healthy male road cyclists between 18 and 40 years of age who compete at the national level in Belgium. After completing a fatiguing cycling session, each participant is randomly assigned to one of four groups receiving different levels of oxygen exposure during recovery.

Two groups breathe oxygen under increased pressure inside a chamber at either 2.5 or 1.4 atmospheres absolute. A third group breathes oxygen at normal pressure. The fourth group receives a sham condition that reproduces the treatment setting without active oxygen exposure.

The study is double-blind, meaning that neither the participants nor the researchers assessing the outcomes know which condition each participant receives.

The main goal is to determine whether a single session of post-exercise HBO improves next-day endurance performance, and whether higher oxygen exposure produces greater effects.

The researchers also collect blood samples and physiological measurements to better understand how the body recovers.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

48

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Belgien
    • Brabant-Wallon
      • Louvain-la-Neuve, Brabant-Wallon, Belgien, 1348
        • Rekruttering
        • Institute of Neuroscience, Université catholique de Louvain

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Road cyclists competing in Elite 2 (Elite without professional contract) or Under-23 (U23) categories or equivalent [Participation in national-level Belgian competitions within the previous 12 months. No specific ranking, finishing position, or performance threshold is required.]
  • ≥ 2 consecutive years of cycling experience at regional or national level, with structured and periodized training
  • Cycling-specific training volume ≥ 8 h a week over the preceding 10 weeks
  • Stable training load in the weeks preceding inclusion, with no major changes due to injury, illness, or abnormal overload
  • Measured VO₂max ≥ 60 ml/kg/min

Exclusion Criteria:

  • Presence of significant cardiovascular, pulmonary, neurological, ENT, or metabolic disease, including but not limited to: Uncontrolled arterial hypertension (systolic blood pressure ≥ 180 mmHg and/or diastolic blood pressure ≥ 110 mmHg) ; Unstable heart disease or decompensated cardiomyopathy
  • Contraindications to hyperbaric exposure, including: Untreated pneumothorax, History of spontaneous pneumothorax without medical clearance ; Pulmonary conditions associated with air trapping (e.g. emphysema or bullous lung disease), or abnormal thoracic imaging when indicated ; Recent thoracic surgery
  • Neurological contraindications, including epilepsy, history of oxygen-induced seizures, or recent seizure activity, and any association with cannabis use
  • Ear, sinus, or Eustachian tube disorders preventing adequate pressure equalization, including active infection or history of severe barotrauma
  • Severe claustrophobia incompatible with chamber exposure

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: HBO 2.5 ATA
PiO₂ = 2.5 (100 % O₂ x 2.5 ATA)
Andet: Post-exercise Recovery
1h intervention after a fatiguing exercise
Eksperimentel: HBO 1.4 ATA
PiO₂ = 1.4 (100 % O₂ x 1.4 ATA)
Andet: Post-exercise Recovery
1h intervention after a fatiguing exercise
Eksperimentel: NBO 1.0 ATA
PiO₂ = 1.0 (100 % O₂ x 1.0 ATA)
Andet: Post-exercise Recovery
1h intervention after a fatiguing exercise
Sham-komparator: SHAM
PiO₂ = 0.21 (21 % O₂ x 1.0 ATA)
Andet: Post-exercise Recovery
1h intervention after a fatiguing exercise

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Next-day endurance performance : Percent decrement in time to exhaustion from baseline
Tidsramme: Throughout the entire study, approximately during 18 months

Endurance performance measured by a cycling time-to-exhaustion test at 105% of the lactate threshold power, expressed as the percentage decrement in time to exhaustion relative to the baseline test.

Performance is compared SHAM to the other oxygen-exposure groups.
Throughout the entire study, approximately during 18 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Université Catholique de Louvain

Samarbejdspartnere

Murdoch University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. juli 2026

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

15. juni 2026

Først indsendt, der opfyldte QC-kriterier

15. juni 2026

Først opslået (Faktiske)

22. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

15. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HBO-RISE

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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Placeringer

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