Core Temperature in Open Water Wetsuited Swimming.

NCT ID: NCT06685627

Last Updated: 2024-11-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

36 participants

Study Classification

OBSERVATIONAL

Study Start Date

2015-10-27

Study Completion Date

2020-10-18

Brief Summary

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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.

Detailed Description

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Conditions

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Temperature

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Open water wetsuited swimming.

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

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Trained and highly trained swimmers.

Exclusion Criteria

* a history of cardiovascular disease, arrhythmias, or gastrointestinal abnormalities precluding the use of rectal temperature measurement.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Oslo University Hospital

OTHER

Sponsor Role collaborator

Norwegian Armed Forces Medical Service

OTHER_GOV

Sponsor Role collaborator

SINTEF MiNaLab

UNKNOWN

Sponsor Role collaborator

University Hospital, Akershus

OTHER

Sponsor Role lead

Responsible Party

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William James Morton

Principle Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Jonny Hisdal, PhD

Role: STUDY_DIRECTOR

Institute of Clinical Medicine, University of Oslo, Oslo, Norway

Locations

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Institute of Clinical Medicine, University of Oslo, Oslo, Norway

Olso, Olso, Norway

Site Status

Countries

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Norway

References

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Morton WJ, Melau J, Olsen RA, Lovvik OM, Hisdal J, Sovik S. Thermal physiology of open water wetsuited swimming: A cohort study. Temperature (Austin). 2025 Mar 24;12(3):245-263. doi: 10.1080/23328940.2025.2479893. eCollection 2025.

Reference Type DERIVED
PMID: 40926792 (View on PubMed)

Other Identifiers

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Akershus Universitetssykehus

Identifier Type: -

Identifier Source: org_study_id

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