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The Effects of hot water immersion for preventing heatstroke

Assessing the Effectiveness of hot water immersion on thermoregulation in a hot environment - Assessing the Effectiveness of hot water immersion

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000059418
Enrollment
30
Registered
2025-10-16
Start date
2025-10-23
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

Not selected

Interventions

Bathing for 10 minutes at 41 celsius for 2 weeks Shower bath for washing only

Sponsors

Bathclin corporation
Lead Sponsor
National Institute for Environmental Studies, Japan
Collaborator

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: Healthy men aged 18 to 69 Those who usually shower or bathe in a bathtub less than twice a week Those with a bathtub suitable for full-body bathing at home Those who can cycle an exercise bike for 30 minutes at hot environment Those who can provide written consent after receiving an explanation of the study details prior to the study Those who can shower or bathe in a bathtub for two consecutive weeks at the start of the study Those who can insert a rectal temperature probe themselves

Exclusion criteria

Exclusion criteria: Those who exercise regularly Those with skin problems Those with extremely irregular lifestyle habits, including eating and sleeping habits Those who are participating in other clinical trials or monitors at the start of this study, or who plan to participate in other clinical trials or monitors during the planned period of this study Those using a pacemaker, Holter monitor, or cardiopulmonary bypass Those with a history of cardiovascular disease (myocardial infarction, angina pectoris, heart failure, arrhythmia, arteriosclerosis, stroke, varicose veins, hypertension), rectal disease (inflammatory bowel disease, post-rectal surgery, etc.), perianal inflammation and bleeding, hemorrhoids, or kidney disease (chronic glomerulonephritis, diabetic nephropathy, renal failure, nephrotic syndrome) Those who have fallen asleep while bathing, or who have experienced dizziness or fainting during or after bathing Those deemed ineligible by the study director or investigators

Design outcomes

Primary

MeasureTime frame
rectal temperature, sweating, blood flow

Secondary

MeasureTime frame
sweating begins, sweat composition, heart rate, skin temperature

Countries

Japan

Contacts

Public ContactMisuzu Kotsugai

Bathclin corporation Product development department

kotsugai_misuzu@bathclin.co.jp029-861-0160

Outcome results

None listed

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