RecruitingNCT07543705

Glucose-Level During Endurance Exercise

Glucose-Level During Endurance Exercise (GLEE Study): Influencing Factors and Mechanisms

Sponsor

University of Ulm

Enrollment

100 participants

Start Date

May 5, 2026

Study Type

OBSERVATIONAL

Conditions

Glucose metabolism

Summary

As part of the mandatory annual assessment of physical fitness, soldiers are required to complete a standardized military march. A total of 100 healthy volunteer participants will be recruited from soldiers serving at the Bundeswehr Hospital Ulm. During this march, physiological and metabolic parameters will be assessed. At baseline, anthropometric data and information on medical history, lifestyle, and fitness status will be collected, including a validated questionnaire on physical activity. Blood and urine samples will be obtained to determine routine laboratory and metabolic parameters, and body composition will be assessed using bioelectrical impedance analysis. In addition, selected sensors will be applied to continuously record physiological data. Participants will then complete a 6 km march carrying 15 kg of equipment. After completion of the march, sensors will be removed and additional blood and urine samples will be collected to evaluate metabolic responses to physical exertion, including catecholamine levels.

Eligibility

Min Age: 18 Years

Inclusion Criteria1

BMI between 18.5 and 30 kg/m\^2

Exclusion Criteria7

Pregnancy or lactation
cardiovascular disease
vegan diet
drug or alcohol abuse
Drug therapy that raises or lowers blood sugar, e.g. steroids, antidiabetics, insulin or influences the autonomic nervous system
No consent to be informed about incidentally discovered pathological findings
Any other (clinical) condition that would endanger participants safety or question scientific success according to the physicians opinion.

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Interventions

OTHERStandardized military march

6 km march carrying 15 kg of equipment. The march will be conducted in uniform in accordance with central military regulations. Participants will be equipped with a continuous glucose monitor an electrocardiography wearable during the march. Before and after the march blood and urine samples will be obtained.