Effects of ketone ester supplementation during altitude training

The Effects of Ketone Ester Supplementation During a 5 Week Live High, Train Low Altitude Training Camp

NA · KU Leuven · NCT06596083

This study is testing if taking ketone esters can help athletes perform better during altitude training by comparing it to a placebo.

Quick facts

PhaseNA
Study typeInterventional
Enrollment18 (estimated)
Ages18 Years to 35 Years
SexAll
SponsorKU Leuven (other)
Locations1 site (Leuven, Vlaams-Brabant)
Trial IDNCT06596083 on ClinicalTrials.gov

What this trial studies

This study investigates the impact of oral ketone ester supplementation on exercise performance during a 5-week simulated altitude training camp. Participants will live at high altitude (2000-3000 meters) while training at sea level, with the aim of enhancing adaptations to hypoxia. The study will compare the effects of ketone supplementation against a placebo, measuring outcomes such as EPO concentrations, hemoglobin mass, and VO2max before, after, and one week post-training. The goal is to determine if combining exogenous ketosis with altitude training provides additional benefits.

Who should consider this trial

Good fit: Ideal candidates are physically fit individuals who engage in regular physical activity and are in good health.

Not a fit: Patients with injuries, contraindications to high-intensity exercise, or those involved in elite athletic training may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance athletic performance by improving oxygen carrying capacity and endurance through innovative nutritional strategies.

How similar studies have performed: While altitude training is well-established, the combination with ketone supplementation is a novel approach that has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Physically fit and regularly involved in physical activity (2-5h per week)
* Good health status confirmed by a medical screening
* Non-smoking

Exclusion Criteria:

* Any kind of injury/pathology that is a contra-indication to perform high-intensity exercise
* Any kind of injury/pathology that is a contra-indication for exposure to hypoxia
* Ongoing pregnancy or breastfeeding
* intake of any medication or nutritional supplement that is proven to affect exercise performance during the last month prior to the start of the study
* Involvement in elite athletic training at a semi-professional or professional level
* Exposure to altitudes higher than 1500 m during the 3 months prior to the start of the study
* Blood ferritin levels below 30 ng/mL
* Current participation in another research trial
* Any other argument to believe that the subject is unlikely to succesfully complete the full study protocol

Where this trial is running

Leuven, Vlaams-Brabant

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Hypoxia, Exogenous Ketosis, Altitude training camp, Exercise, Live high, train low, EPO

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.