COVID-19 in Polish Ice Swimmers.

Covid19 Clinical Trial

— ICE  

Official title:

Influence of Ice Swimming on Hardening Against SARS-CoV-2 and Influence of AB0 Rh Blood Type on Viral Resistance in Polish Ice Swimmers.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04817280
• Other study ID #: KB-03/139/2021
• Status: Completed
• Start date: December 1, 2020
• Est. completion date: March 1, 2021

Study information

• Verified date: April 2021
• Source: Wroclaw Medical University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Ice swimming is an increasingly common phenomenon in Poland. It has been confirmed that it has a beneficial effect on health by increasing the natural non-specific immunity to infections. In the face of the current Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic causing Coronavirus Disease 2019 (COVID-19), researchers decided to use a survey to check the incidence of COVID-19 among Polish ice swimmers, as well as recent ailments. Then, the researchers will compare the obtained results with epidemiological data for Poland.Researchers will also investigate the relationship between susceptibility to SARS-CoV-2 infection and the blood group and Rh factor among ice swimmers.

Description:

The research tool is an original questionnaire compiled by a team of experts conducting the study. The survey includes questions about sociodemographic data, such as age and gender and blood type in AB0 system with Rh factor, and questions about the frequency of ice swimming, the duration of a single session, and since when respondents have been ice swimming. There was also a question about the respondents' compliance with the restrictions and recommendations related to the pandemic and contacts with people with confirmed SARS-CoV-2 infection. In the survey, researchers ask about the infectious symptoms experienced during the pandemic and about being diagnosed with COVID-19 or its exclusion. People who have been ill are asked about the place of treatment.

The questionnaires are collected in traditional form, on the Internet and as scans of documents. Each survey was completely anonymous. The obtained statistical data will be compared with official data on new COVID-19 cases and recoveries at the same time. Official data are published by the Ministry of Health and earlier also by Sanitary and Epidemiological Stations. The main aim of the study was to determine whether ice swimming also increases resistance to SARS-CoV-2 and COVID-19.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 2534
• Est. completion date: March 1, 2021
• Est. primary completion date: January 17, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• ice swimmers

Exclusion Criteria:

• not active ice swimmers

Related Conditions & MeSH terms

• Coronavirus Infections
• Covid19
• Hypothermia
• Hypothermia Due to Cold Environment
• Resistance, Disease
• SARS-CoV Infection
• Severe Acute Respiratory Syndrome

Intervention

Other:
• Ice Swimming
The intervention is not made in the course of a research study. Ice swimming has been introduced earlier by a given group. The group was made up of people who already swim in ice.

Locations

Country	Name	City	State
Poland	Department of Radiotherapy of Multidisciplinary Provincial Hospital	Gorzów Wielkopolski	Lubuskie
Poland	Department of Public Health at Wroclaw Medical University	Wroclaw	Dolny Slask
Poland	Treasury Medical Company	Zielona Góra	Lubuskie

Sponsors (1)

Lead Sponsor	Collaborator
Wroclaw Medical University

Country where clinical trial is conducted

Poland, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Assessment of the incidence of COVID-19 among ice swimmers compared to the general population.	Comparison of the data obtained from surveys collected among ice swimmers with the data published in official channels for the general population during this period.	47 days.
Primary	Assessment of the frequency of asymptomatic SARS-CoV-2 infection among ice swimmers compared to the general population.	Comparison of the data obtained from surveys collected among ice swimmers with the data published in official channels for the general population during this period.	47 days.
Primary	Assessment of the frequency of occurrence of particular symptoms of SARS-CoV-2 infection among ice swimmers compared to the general population.	Comparison of the data obtained from surveys collected among ice swimmers with the data published in official channels for the general population during this period.	47 days.
Primary	Assessment of the frequency of COVID-19 treatment in an outpatient, inpatient and intensive care unit among ice swimmers compared to the general population.	Comparison of the data obtained from surveys collected among ice swimmers with the data published in official channels for the general population during this period.	47 days.
Primary	Assessment of the impact of parameters and ice swimming strategies on the likelihood of developing COVID-19, the occurrence of individual symptoms of the disease and the severity of its course.	Inference from data obtained from surveys collected among ice swimmers.	47 days.
Primary	Assessment of the influence of blood group on susceptibility to SARS-CoV-2 infection among ice swimmers.	Inference from data obtained from surveys collected among ice swimmers.	47 days.
Secondary	Assessment of the immunity of the ice swimmer's immune system compared to the general population.	Comparison of the data obtained from surveys collected among ice swimmers with the data published in official channels for the general population during this period.	47 days.