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The development of acid-base parameters during acute normobaric hypoxic exposure

The development of acid-base parameters during acute normobaric hypoxic exposure

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00011499
Enrollment
16
Registered
2016-12-22
Start date
2016-10-28
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HYPOXIA healthy subjects

Interventions

Group 1: The purpose of this experimental trial is to investigate the acute effects of normobaric hypoxia on acid-base parameters in humans. Therefore, 16 subjects stay for twelve hours in a hypoxic c

Sponsors

Ruhr-Universität Bochum, Institut für Sportwissenschaft, Lehrstuhl für Sportmedizin und Sporternährung
Lead Sponsor

Eligibility

Sex/Gender
All
Age
20 Years to 40 Years

Inclusion criteria

Inclusion criteria: - moderately active lifestyle - attested full physical fitness

Exclusion criteria

Exclusion criteria: - cardial or pulmonary desease - altitude sojourn above 2000m within the last two weeks before experimental trial - acute infects - chronic medication

Design outcomes

Primary

MeasureTime frame
To assess changes in acid-base balance, capillary blood samples are taken every hour during the blood gas parameters pH, [HCO3]-, BE and saO2. One blood gas analysis is carried out before entering the hypoxic chamber and twelve during exposure to simulated altitude. Furthermore, heart rate and oxygen saturation are measured hourly using a puloximetry.

Secondary

MeasureTime frame
The amount of eliminated urine and associate urinary pH are assessed to describe hypoxia-induced diuretic effects. To asses possible metabolic effects of nutrition on acid-base status, nutrition protocols are completed.

Countries

Germany

Contacts

Public ContactMirjam Limmer

Deutsche Sporthochschule Köln, Institut für Natursport und Ökologie

m.limmer@dshs-koeln.de0049 234 4982 4080

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026