Noninvasive determination of total body water during sports

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00005301

Enrollment

Registered

2013-09-16

Start date

2013-09-10

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

Healthy Volunteers E86

Interventions

Group 1: All subjects are running on a treadmill for two hours in order to generate a slowly increasing dehydration. Measurements are collected every 15 minutes. Ground truth of total body water is m

Eligibility

Sex/Gender

Male

Age

18 Years to 35 Years

Inclusion criteria

Inclusion criteria: All subjects have to be healthy, do sports on a regular basis, have a social security number, and pass a performance diagnostics test.

Exclusion criteria

Exclusion criteria: - Pre-existing disease of heart or other cardiovascular diseases - medical history, acute or chronic diseases that could influence the results or could worsen - blood laboratory findings that are outside of laboratory standards - If the performance diagnostics test could not be performed because of one or more of the following contra indicators: - acute coronary syndrome - symptomatical cardiac irregularity and/or restricted hemodynamics - symptomatical severe aortic stenosis - congestive cardiac insufficiency - acute pulmonary embolism - acute carditis - acute aortic dissection - feverish infections - phlebothrombosis of lower extremities - main (coronary artery) stenosis - valvular heart disease of moderate degree - known electrolyte disorder - arterial hypertonia (RR > 180/100 mmHg) - tachyarrhythmia or bradyarrhythmia - hypertrophic obstructive cardiomyopathy - high-grade AV-block - anemia - physical and/or psychological impairments Further exclusion criteria that could occur during the performance diagnostics test: - RR systolic > 230-260 mmHg, diastolic > 115 mmHg - supraventricular tachycardia - bradyarrhythmia - polymorphic extrasystole and salvos - high-grade AV-block, bundle branch block - angina pectoris - major dyspnea, vertigo - major, typical ST depression (V4-6 > 0,3 mV, Extr. > 0,2 mV) - significant ST elevation (DGK: > 0,1 mV) - indicator of myocardial ischaemia - cyanosis

Design outcomes

Primary

Measure	Time frame
There are no primary or secondary outcomes. The study is conducted to collected data for the development of pattern recognition algorithms.	—

Secondary

Measure	Time frame
There are no primary or secondary outcomes. The study is conducted to collected data for the development of pattern recognition algorithms.	—

Countries

Germany

Contacts

Public ContactMatthias Ring

Pattern Recognition Lab, Friedrich-Alexander-University Erlangen-Nuremberg

matthias.ring@cs.fau.de+49 9131 85 28980

Outcome results

None listed

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