Cooling Solutions for Outdoor Workers

Launched by STANFORD UNIVERSITY · May 29, 2025

Keywords

ClinConnect Summary

This clinical trial, called "Cooling Solutions for Outdoor Workers," is looking at ways to help outdoor workers stay cool and safe in hot weather. The researchers want to find out if two different cooling methods can help lower body temperature and improve comfort for people who work outside. This study is not yet recruiting participants, but it aims to include adults aged 18 and older who will be working in the same job during the trial and can speak either English or Spanish.

If you decide to participate, you will receive one of the cooling methods being tested, and you’ll be monitored to see how well it works. However, not everyone can join the study. For instance, you cannot participate if you weigh less than 40 kg (about 88 pounds), have certain health issues like gastrointestinal disorders, or if you are pregnant. It's important that you can provide informed consent, meaning you understand what the study involves and agree to participate. This trial hopes to find effective ways to help outdoor workers stay safe and healthy in the heat.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Age ≥ 18
• • 2. Anticipated to be working in the same job category for the duration of the study
• • 3. Able to communicate in English or Spanish
• Exclusion Criteria:
• • 1. Cannot provide informed consent
• • 2. Weight less than 40 kg
• • 3. Inability to swallow pills
• • 4. Known history of having a pacemaker or ICD
• • 5. Pregnancy as determined by self report and confirmed on Day 1
• • 6. Gastrointestinal disorders (e.g., gastroparesis, prior surgery on GI tract with the exception of appendectomy or cholecystectomy, diverticulosis or inflammatory bowel disease)
• • 7. Plan for an elective MRI in the 7 days post last planned pill ingestion