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To investigate the effectiveness of cooling body temperature raised by exercise in a hot environment with cold water using a heatstroke relief bag

Verification of cold water immersion using a heatstroke relief bag for core body temperature rise caused by exercise in a hot environment - Verification of cold water immersion method for body temperature rise due to exercise in a hot environment

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000060099
Enrollment
10
Registered
2025-12-22
Start date
2025-12-25
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

The subjects entered an environmentally controlled room set at a temperature of 40 degree and humidity of 60%, sat in a chair and rested for five minutes, then walked for three minutes on a treadmill

Sponsors

Osaka University of Health and Sport Sciences
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 1) Male individuals aged 18-29. 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) Chronic health problems 2) A history of heatstroke this fiscal year 3) A history of cardiovascular, metabolic, or respiratory disease

Design outcomes

Primary

MeasureTime frame
The core body temperature is measured using a capsule thermometer after immersion in cold water for 10 minutes, and the cooling temperature per minute (cooling rate) is calculated and evaluated.—

Secondary

MeasureTime frame
Heart rate and skin temperature are measured during cold water immersion to evaluate the relationship with core body temperature.—

Countries

Japan

Contacts

Public ContactSatoshi Kuwano

Osaka University of Health and Sport Sciences School of Sport Sciences

kuwano@n-bird.com0724537022

Outcome results

None listed

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