UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000063396
Receipt number R000072561
Scientific Title Effect of palm cooling using cube ice on physiological responses during exercise in a hot environment
Date of disclosure of the study information 2026/10/26
Last modified on 2026/10/23 18:56:54

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Basic information

Public title

Effect of palm cooling using cube ice on physiological responses during exercise in a hot environment

Acronym

Effect of cooling the palms with ice cubes during exercise in a hot environment

Scientific Title

Effect of palm cooling using cube ice on physiological responses during exercise in a hot environment

Scientific Title:Acronym

Effect of cooling the palms with ice cubes during exercise in a hot environment

Region

Japan


Condition

Condition

healthy adult

Classification by specialty

Not applicable

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To examine the effect of palm cooling using ice cubes on core body temperature during exercise in a hot environment

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Deep body temperature, heart rate, exhaled gas, subjective fatigue, subjective thermal sensation, weight, salivary stress markers

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Cross-over

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is blinded

Control

No treatment

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

2

Purpose of intervention

Prevention

Type of intervention

Other

Interventions/Control_1

Grab a cube ice

Interventions/Control_2

Do not grab a cube ice

Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

18 years-old <=

Age-upper limit

25 years-old >=

Gender

Male

Key inclusion criteria

1. Healthy adults who are non-smokers, do not take medication, and participate in middle- or long-distance track and field events
2. Individuals who have received a full explanation of the study, fully understood the explanation, and agreed to participate in the study in writing

Key exclusion criteria

1. People who smoke and take medication
2. People who have been advised by a doctor to stop exercising due to injury

Target sample size

14


Research contact person

Name of lead principal investigator

1st name Michihiro
Middle name
Last name Kon

Organization

Toyo University

Division name

Department of Health and Sports Sciences, Faculty of Health and Sports Sciences

Zip code

115-8650

Address

1-7-11 Akabanedai, Kita-ku, Tokyo, Japan

TEL

03-5924-2865

Email

kon@toyo.jp


Public contact

Name of contact person

1st name Michihiro
Middle name
Last name Kon

Organization

Toyo University

Division name

Department of Health and Sports Sciences, Faculty of Health and Sports Sciences

Zip code

115-8650

Address

1-7-11 Akabanedai, Kita-ku, Tokyo, Japan

TEL

03-5924-2865

Homepage URL


Email

kon@toyo.jp


Sponsor or person

Institute

Toyo University

Institute

Department

Personal name



Funding Source

Organization

Toyo University

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Human Ethics Committee of Toyo University

Address

2100, Kujirai, Kawagoe-shi, Saitama, Japan

Tel

049-239-1519

Email

kon@toyo.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 10 Month 26 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2026 Year 09 Month 29 Day

Date of IRB

2026 Year 10 Month 08 Day

Anticipated trial start date

2026 Year 11 Month 01 Day

Last follow-up date

2029 Year 03 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2026 Year 10 Month 23 Day

Last modified on

2026 Year 10 Month 23 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000072561