An observational study in Temperature, sponsored by University Hospital, Akershus. Completed at 1 site in Norway. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-11-12.
Sponsored by University Hospital, Akershus · Observational
Swimming in cold water is intrinsically unsafe. One of the threats is a fall in core body temperature (Tcore), which adversely affects all body systems and increases the risk of death. Wetsuits mitigate, but do not negate this threat. Environmental conditions may confound findings from laboratory studies or computer models, thus necessitating open water studies.
This study was designed to investigate the effects of open water wetsuited swimming on core body temperature at a range of different water temperatures between 8.4oC and 24.5oC.
University Hospital, Akershus is the lead sponsor of 123 studies on the registry; 28 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Trained and highly trained swimmers were recruited from local swim clubs and via social media
Exclusion Criteria:
All swimmers used their own well-fitting wetsuits (5 mm maximum thickness in accordance with World Triathlon guidelines7) and were free to supplement additional neoprene hats, gloves and booties as desired. A safety paramedic attended all swims. Swim distance was self-determined
Core temperature
A self-inserted rectal pill was used to continuously measure core temperature in 76 open water swims by 31 wetsuited swimmers in water temperatures ranging from 8.4°C to 24.5°C. The Tcore curves were analysed by linear mixed model regression.
Time frame: The thermistor was inserted 15 minutes prior to immersion and measured the core temperature until 30 minutes after egress from the water.
Plan to share: Yes — IPD will be shared upon request from a validated body and subject to a data sharing agreement with the University of Oslo.
Supporting information: Study protocol, Sap, Icf
No publications or documents are linked to this record.
This study is completed, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
University Hospital, Akershus