UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000063133
Receipt number R000072201
Scientific Title The effect of short-term hypoxia inhalation on subsequent endurance performance
Date of disclosure of the study information 2026/11/15
Last modified on 2026/10/01 17:56:54

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Basic information

Public title

The effect of short-term hypoxia inhalation on subsequent endurance performance

Acronym

The effect of short-term hypoxia inhalation on subsequent endurance performance

Scientific Title

The effect of short-term hypoxia inhalation on subsequent endurance performance

Scientific Title:Acronym

The effect of short-term hypoxia inhalation on subsequent endurance performance

Region

Japan


Condition

Condition

Healthy younger

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To explore the effect of short-term hypoxia inhalation on subsequent endurance performance and the relationship between hypoxia-induced change in endurance performance and cardiac autonomic nerve activity.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

exercise time

Key secondary outcomes

VO2peak, heart rate max, heart rate variability, heart rate recovery


Base

Study type

Interventional


Study design

Basic design

Cross-over

Randomization

Randomized

Randomization unit

Individual

Blinding

Single blind -participants are blinded

Control

Placebo

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

2

Purpose of intervention

Educational,Counseling,Training

Type of intervention

Behavior,custom

Interventions/Control_1

Participants are exposed to normobaric hypoxia (FiO2 = 0.13) for 10 min while sitting at rest. After hypoxia inhalation, participants perform incremental exercise on a recumbent ergometer under normoxic conditions. The workload is increased by 20 W/min for males and 15 W/min for females until participants can no longer maintain the required pedaling rate.

Interventions/Control_2

Participants rest for 10 min under normoxic conditions. After hypoxia inhalation, participants perform incremental exercise on a recumbent ergometer under normoxic conditions. The workload is increased by 20 W/min for males and 15 W/min for females until participants can no longer maintain the required pedaling rate.

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

30 years-old >=

Gender

Male and Female

Key inclusion criteria

Males and females aged 18-30 years old affiliated with Niigata University of Health and Welfare. Participants must have no history of neurological, respiratory, circulatory, musculoskeletal, or metabolic disorders. They must be nonsmokers. They must not have engaged in high-altitude training, hypoxic training, or lived at high altitudes within the past six months. Their levels of depression and sleep quality, as assessed by a questionnaire, must be within normal ranges. They must have stable lifestyle habits.

Key exclusion criteria

Individuals under 18 years of age or 31 years of age or older. Individuals with a history of neurological, respiratory, circulatory, musculoskeletal, or metabolic disorders. Smokers. Individuals who have engaged in high-altitude training, hypoxic training, or lived at high altitudes within the past six months. Individuals whose levels of depression and sleep quality, as assessed by the questionnaire, exceed the cutoff values. Individuals with unstable lifestyle habits.

Target sample size

25


Research contact person

Name of lead principal investigator

1st name Yudai
Middle name
Last name Yamazaki

Organization

Niigata University of Health and Welfare

Division name

Department of Health and Sports

Zip code

950-3198

Address

1398, Shimami-cho, Kita-ku, Niigata-city, Niigata, Japan

TEL

025-257-4538

Email

yudai-yamazaki@nuhw.ac.jp


Public contact

Name of contact person

1st name Yudai
Middle name
Last name Yamazaki

Organization

Niigata University of Health and Welfare

Division name

Department of Health and Sports

Zip code

950-3198

Address

1398, Shimami-cho, Kita-ku, Niigata-city, Niigata, Japan

TEL

025-257-4538

Homepage URL


Email

yudai-yamazaki@nuhw.ac.jp


Sponsor or person

Institute

Niigata University of Health and Welfare

Institute

Department

Personal name



Funding Source

Organization

Ministry of Education, Culture, Sports, Science and Technology

Organization

Division

Category of Funding Organization

Japanese Governmental office

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Niigata University of Health and Welfare

Address

1398, Shimami-cho, Kita-ku, Niigata-city, Niigata, Japan

Tel

025-257-4538

Email

yudai-yamazaki@nuhw.ac.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 11 Month 15 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 10 Month 01 Day

Date of IRB


Anticipated trial start date

2026 Year 12 Month 15 Day

Last follow-up date

2027 Year 06 Month 30 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 01 Day

Last modified on

2026 Year 10 Month 01 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000072201