Core Temperature Afterdrop in Cold-water Swimming

NCT ID: NCT05409560

Last Updated: 2025-03-26

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 15 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2021-05-21
• Study Completion Date: 2021-08-19

Brief Summary

A significant risk associated with hypothermia during exercise in a cold environment is the core temperature (T°core) afterdrop, which corresponds to a continuous fall in T°core during rewarming after hypothermia. However, the rate and predictors of the afterdrop are unclear, particularly during prolonged cold water swimming.

The investigators propose to measure the changes in T°core during and after a cold water swim at 12.5-13°C qualifying for English Channel swim and to test the impact of anthropometric and swimming parameters on the duration of the T°core afterdrop. The hypotheses are that afterdrop is common during a prolonged cold water swimming event and that protective factors against T°core drop during cold water swimming (increased body fat and BMI) might, conversely, be associated with prolonged afterdrop.

Conditions

Hypothermia, Accidental; Cold Water Swimming

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

Cold water swimmers

swimmers participating in the 6-hour cold water swim, qualifying for the English Channel Swim

Swimming participants in the 6-hour cold water swim

Intervention Type: OTHER

The 6-hour cold water swim was the qualifying swim for the English Channel swim during the Channel Swim Camp Dinard 2021 and participants were the swimmers registered for the 6-hour cold water swim who volunteered to participate in this study

Interventions

Swimming participants in the 6-hour cold water swim

The 6-hour cold water swim was the qualifying swim for the English Channel swim during the Channel Swim Camp Dinard 2021 and participants were the swimmers registered for the 6-hour cold water swim who volunteered to participate in this study

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• swimmers taking part in the Channel Swim Camp
• swimmers above 18 years of age
• swimmers willing and able to give informed consent for participation in the study

Exclusion Criteria

• swallowing disorder
• chronic gastrointestinal disease
• MRI scheduled within 48 hours after the race.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University Hospital, Caen

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

CHU Caen Normandie

Caen, , France

Countries

France

Other Identifiers

THERMOCOLD

Identifier Type: -

Identifier Source: org_study_id