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Search / Trial NCT06954909

The Impact of Self-assessment on Hydration

Launched by ARIZONA STATE UNIVERSITY · Apr 30, 2025

Trial Information

Current as of July 09, 2025

Enrolling by invitation

Keywords

Urine Osmolality Urine Specific Gravity Labelled Water (D20) Deuterium Education Self Assessment Tactical Operators Firefighters Women Men Healthy Subjects

ClinConnect Summary

Enrollment will take place until enough people have been screened and be eligible to be enrolled in PART III of the study.

Aside from allowing the investigators to better understand the hydration status of participants in PART I, this part will help to determine potentially eligible participants that can be confirmed through PART II by collecting again a urine sample, and if again concentrated urine is confirmed the research team will take a 5 mL venous blood draw performed by a trained phlebotomist to confirm elevated a copeptin level. These confirmed participants can then be enrolled in ...

Gender

ALL

Eligibility criteria

  • The study plans to include firefighters from the Tonto National Forest and the broader Phoenix Valley area, and if needed, other active populations that are similarly active to WLFFs. Participants with high urine concentration (≥1.020 USG) for both samples collected during Part I (screening phase), may be invited to provide an additional urine sample and a blood sample for copeptin analysis during a follow up day (Part II). Participants with elevated USG and copeptin are eligible to participate in the study.
  • Inclusion for PART I is that participants are part of a by the research selected wildland firefighter population (or surrogate population), no further exclusion criteria are followed for PART I. For Part II and Part III the following criteria apply:
  • Inclusion Criteria:
  • Age 18-65 years
  • Identifying as male, female or other
  • Exclusion Criteria:
  • Thyroid medication
  • Bariatric surgery
  • Cardiovascular disease
  • Renal disease
  • Hepatic disease
  • Bodyweight \<110 lbs.
  • Any injury that would not allow physical performance or activity
  • Pregnant or lactating
  • Diuretics
  • Non-stable self-reported body weight for the last month (\<10 lbs. fluctuation)
  • Investigators will not exclude participants reporting the use of dietary supplements as there is no evidence that the accuracy of self-assessment (specifically the accuracy of urine color assessment) to determine a low vs. high urine concentration is influenced by dietary supplement use, but participants will be questioned about their supplement, electrolyte and sport drink use.

About Arizona State University

Arizona State University (ASU) is a leading research institution dedicated to advancing knowledge and innovation in various fields, including health sciences. As a clinical trial sponsor, ASU leverages its interdisciplinary expertise and state-of-the-art facilities to conduct rigorous clinical research aimed at improving patient outcomes and contributing to the scientific community. With a commitment to ethical research practices and collaboration with healthcare professionals, ASU strives to translate research findings into practical applications that benefit society. The university's focus on community engagement and real-world impact underscores its role as a pivotal player in the advancement of clinical research.

Locations

Phoenix, Arizona, United States

Patients applied

0 patients applied

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported