Standby divers in warm to hot environments suffer heat stress and hypohydration
Hostler D, Murphey JT, Schwob J, Clemency BM, Monaco BA, Hess HW
Temperature (Austin, Tex.) · 1 citation
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2025-07-20 · Temperature (Austin) · vol. 12 · issue 4 · pp. 365–372
- Publisher
- Taylor & Francis
- Cited
- 0 citations · more than 18% of similar papers · 0.0× the field average
- References
- 7 works
- Access
- Open access (repository copy)
- Research areas
- Thermoregulation and physiological responses · Spaceflight effects on biology · Physiological and biochemical adaptations
- Keywords
- Heat stress, Stress (linguistics), Environmental science, Atmospheric sciences, Geology
6 authors
From US
- David P. Hostler · correspondingUniversity at Buffalo, State University of New York
- Joshua T. MurpheyUniversity at Buffalo, State University of New York
- J. SchwobUniversity at Buffalo, State University of New York
- Brian M. ClemencyUniversity at Buffalo, State University of New York
- Brian A. MonacoUniversity at Buffalo, State University of New York
- Hayden W. HessUniversity at Buffalo, State University of New York
Abstract
Standby divers must be fully dressed in the appropriate ensemble during military and commercial diving operations. These garments are often fully encapsulating and may result in heat stress and hypohydration when worn in warm environments. We examined the physiologic responses to heat in subjects wearing a Viking HD drysuit during 1 hour of exposure to dry-bulb temperatures of 33°C, 36°C, 39°C, and 42°C. Euhydrated subjects donned a heavy rubber drysuit and chemical protective gloves over a lightweight base layer. The drysuit was appropriate for contaminated water diving with integrated boots and neck dam. Heart rate (HR), core (Tc), and skin (Tsk) temperatures were monitored. Eight subjects (4 males) aged 27 ± 5 y completed all study conditions. HR and Tc increased over time (p p p = 0.60). Sweat rates progressively increased in the warmer conditions and corresponded with a -0.20 ± 0.10, -0.40 ± 0.19, -0.69 ± 0.46, and -0.99 ± 0.55% change in body mass. Even in the absence of radiant heating, significant hypohydration and heat stress occurs in standby divers after 30 min of exposure to 42°C and after 40 min at 39°C. Awareness of the conditions and rotation of standby divers could increase mission safety in these hot environments.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
Community trust
Loading…
How much do you trust this study's findings?
Comments
Sign in to rate, comment on or flag this study.Sign inSomething wrong here?
Flag this study if its information, labels or funding look wrong. An editor reviews every flag.
Sign in to rate, comment on or flag this study.Sign inEducational information about published research. Not medical advice, and not a recommendation to start or stop anything.