The effect of sauna bathing methods on blood vessel health: A study to investigate

Effects of contrast bathing, which combines sauna and cold-water bathing, on arterial stiffness: a crossover randomized controlled trial - Sauna and arterial stiffness Study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000056474

Enrollment

Registered

2024-12-17

Start date

2024-01-15

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Interventions

Participants will undergo 10 minutes of sauna bathing, followed by 1 minute of cold-water immersion and 5 minutes of outdoor cooling, repeated as a set. This procedure will be performed for a total of

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1) Male individuals aged 20-22. 2) Persons who can fully understand the purpose and sign the consent form. 3) Persons who can comply with the intervention.

Exclusion criteria

Exclusion criteria: 1) Individuals with abnormalities detected during health screening. 2) Those with severe skin conditions or allergies to cold-water baths.

Design outcomes

Primary

Measure	Time frame
Brachial-ankle pulse wave velocity will be measured before bathing, immediately after bathing, and 30 minutes after bathing.	—

Secondary

Measure	Time frame
Pulse late and blood pressure will be measured before bathing, immediately after bathing, and 30 minutes after bathing.	—

Countries

Japan

Contacts

Public ContactHiroya Koshiba

Osaka University of Health and Sport Sciences Graduate School of Sport and Exercise Sciences

hiroyakoshiba@gmail.com072-479-3121

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026