Non-Invasive Optical Spectroscopic Methods for Dehydration Identification in Marathon Trainees

Status

Withdrawn

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01981902

Enrollment

Registered

2013-11-13

Start date

2013-08-31

Completion date

2018-08-31

Last updated

2022-11-01

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

Conditions

Dehydration

Keywords

Dehydration

Brief summary

Dehydration can result from exposure to harsh environments including hot and dry desert climates. Soldiers and non-military workers are frequently required to work in hot, dry conditions, and dehydration can be productivity limiting and life threatening if unrecognized.

Detailed description

The research can use low power laser technology to take measurements of muscle tissue water content in volunteers before and after marathon training runs to detect dehydration. Two slightly different devices can be used to detect dehydration. 1). diffuse optical spectroscopy and 2). spatial frequency domain imaging-modulated imaging The researchers can determined by use other methods to assess the level of dehydration status in runners. These methods will include taking weight and temperature before and after run, skin-fold measurements pre and post run, and obtaining saliva samples from before and after run. The researchers can determine the study use non-invasive, laser light technology measure tissue water concentrations, as an indicator of dehydration.

Interventions

DEVICENon-Invasive Optical Spectroscopic

Non-Invasive Optical Spectroscopic

Study design

Observational model

CASE_ONLY

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to 60 Years

Healthy volunteers

Yes

Inclusion criteria

* male female ages of 18 and 60 * training for a marathon

Exclusion criteria

1. Poorly controlled diabetes mellitus 2. Diabetes insipidus (excessive urination of water) as diagnosed by your physician 3. disorder of the intestine 4. Irritable bowel syndrome with excessive diarrhea, as diagnosed by a physician 5. Congestive heart failure and subsequent use of a diuretic water pill to remove excess water from the body 6. Have poor kidney function 7. Have been diagnosed with hyperthyroidism/hypothyroidism by your physician

Design outcomes

Primary

Measure	Time frame	Description
Hydration	up to 4 weeks	Marathon Trainees

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026