Hypoxia, Appetite, and Energy Intake in Young Female Adults

NCT ID: NCT06912230

Last Updated: 2025-04-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-11-13

Study Completion Date

2025-12-31

Brief Summary

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The goal of this clinical trial is to investigate the effects of acute passive continuous hypoxemia (simulated high-altitude at rest) on appetite and energy intake in healthy young female adults. The main questions it aims to answer are:

* Does six hours of simulated high-altitude (5000 meters) reduce scores of subjective appetite and energy intake?
* Do changes in appetite and energy intake persist in the hours following the end of hypoxic exposure? Researchers will compare the effects of simulated high-altitude to a control normoxia (sea-level) condition to see if exposure to low oxygen levels independently affect appetite and energy intake.

Participants will:

* Visit the laboratory for a preliminary screening session to assess eligibility.
* Undergo two randomized, single-blind, experimental sessions consisting of six hours of passive exposure to normoxia or hypoxia in a climate-controlled chamber.
* Consume foods provided from a curated list, served in ad libitum quantities, after leaving the laboratory to assess post-exposure energy intake.

Detailed Description

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Conditions

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Hypoxia Altitude Appetite Energy Intake

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Normoxia

Group Type EXPERIMENTAL

Normoxia

Intervention Type OTHER

Participants will undergo a 6-hour passive exposure to normoxia in a climate-controlled environmental chamber maintained at 22°C with 30% relative humidity. They will remain in a fasted state throughout the exposure period.

Hypoxia (simulated altitude of 5000 meters above sea-level)

Group Type EXPERIMENTAL

Hypoxia (simulated altitude of 5000 meters above sea-level)

Intervention Type OTHER

Participants will undergo a 6-hour passive exposure to a simulated altitude of 5000 meters above sea-level in a climate-controlled environmental chamber maintained at 22°C with 30% relative humidity. They will remain in a fasted state throughout the exposure period.

Interventions

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Normoxia

Participants will undergo a 6-hour passive exposure to normoxia in a climate-controlled environmental chamber maintained at 22°C with 30% relative humidity. They will remain in a fasted state throughout the exposure period.

Intervention Type OTHER

Hypoxia (simulated altitude of 5000 meters above sea-level)

Participants will undergo a 6-hour passive exposure to a simulated altitude of 5000 meters above sea-level in a climate-controlled environmental chamber maintained at 22°C with 30% relative humidity. They will remain in a fasted state throughout the exposure period.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* English or French speaking
* Ability to provide informed consent

Exclusion Criteria

* History or evidence of chronic disease
* Current use of hypolipemic medication
* Current use of hormonal contraceptives
* Current use of antidepressants
* Current use of anticoagulants
* Ongoing smoking status
* Experiencing pregnancy, puerperium, or irregular menstrual cycles
Minimum Eligible Age

18 Years

Maximum Eligible Age

30 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Natural Sciences and Engineering Research Council, Canada

OTHER

Sponsor Role collaborator

Hopital Montfort

OTHER

Sponsor Role collaborator

Institut du Savoir Montfort

UNKNOWN

Sponsor Role collaborator

University of Ottawa

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Behavioural and Metabolic Research Unit, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa

Ottawa, Ontario, Canada

Site Status RECRUITING

Countries

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Canada

Central Contacts

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Pascal Imbeault, PhD

Role: CONTACT

6135625800 ext. 7290

Facility Contacts

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Pascal Imbeault, PhD

Role: primary

6135625800 ext. 7290

Other Identifiers

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H-06-18-837

Identifier Type: -

Identifier Source: org_study_id

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