UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000062271
Receipt number R000071258
Scientific Title An Observational Study of Sleep Status During a Training Camp in Collegiate Athletes
Date of disclosure of the study information 2026/07/17
Last modified on 2026/07/17 17:55:22

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Basic information

Public title

An Observational Study of Sleep Status During a Training Camp in Collegiate Athletes

Acronym

An Observational Study of Sleep Status During a Training Camp in Collegiate Athletes

Scientific Title

An Observational Study of Sleep Status During a Training Camp in Collegiate Athletes

Scientific Title:Acronym

An Observational Study of Sleep Status During a Training Camp in Collegiate Athletes

Region

Japan


Condition

Condition

N/A(healthy adults)

Classification by specialty

Not applicable Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The purpose of this study was to clarify the characteristics of nocturnal blood glucose levels and sleep status in endurance athletes by continuously monitoring glucose concentrations during sleep and investigating their sleep status throughout a training camp.

Basic objectives2

Others

Basic objectives -Others

The purpose of this study was to clarify the characteristics of nocturnal blood glucose levels and sleep status in endurance athletes by continuously monitoring glucose concentrations during sleep and investigating their sleep status throughout a training camp.

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Sleep quality, Nocturnal glucose levels, Training performance evaluation

Key secondary outcomes



Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


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


Not applicable

Gender

Male

Key inclusion criteria

Healthy competitive athletes aged 18 years or older who belong to a university ekiden team.

Key exclusion criteria

1) Individuals who do not provide informed consent to participate in the study.
2) Individuals currently receiving treatment for a serious disease or medical condition.
3) Individuals unable to engage in sufficient training at the start of the study due to injury or other health conditions.
4) Individuals scheduled to undergo surgery during the study period.
5) Individuals who have been hospitalized for medical treatment within the past 6 months or are scheduled for hospitalization during the study period.
6) Individuals who regularly use prescription or over-the-counter medications during the study period.
7) Individuals currently participating in another clinical study or who have participated in a clinical study within the previous 1 month.
8) Individuals who are unable to abstain from alcohol consumption from 2 days before the start of the study until the end of the study.
9) Individuals with a habitual smoking history.
10) Individuals with irregular sleep duration and/or sleep habits.
11) Individuals currently receiving medical treatment for psychiatric disorders (e.g., depression) or sleep disorders, or those with a history of psychiatric disorders.
12) Individuals who have been diagnosed with sleep apnea syndrome or who are aware of experiencing apnea during sleep.
13) Individuals with symptoms of nocturia, or those currently receiving medical treatment and taking medication for non-urological diseases.
14) Individuals with allergies to medications and/or foods.
15) Individuals with metal allergies (including skin reactions to electrodes) or sensitive skin.
16) Individuals judged by the principal investigator to be unsuitable for participation in this study.

Target sample size

20


Research contact person

Name of lead principal investigator

1st name Masaaki
Middle name
Last name Sugita

Organization

Nippon Sport Science University

Division name

Faculty of Sport Science

Zip code

227-0033

Address

1221-1 Kamoshida-cho, Aoba-ku, Yokohama, Kanagawa 227-0033, Japan

TEL

03-5706-1148

Email

m-sugita@nittai.ac.jp


Public contact

Name of contact person

1st name Masaaki
Middle name
Last name Sugita

Organization

Nippon Sport Science University

Division name

Faculty of Sport Science

Zip code

227-0033

Address

1221-1 Kamoshida-cho, Aoba-ku, Yokohama, Kanagawa 227-0033, Japan

TEL

03-5706-1148

Homepage URL


Email

m-sugita@nittai.ac.jp


Sponsor or person

Institute

Nippon Sport Science University

Institute

Department

Personal name

Masaaki Sugita


Funding Source

Organization

Self-funding

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Nippon Sport Science University

Address

7-1-1 Fukasawa, Setagayaku, Tokyo

Tel

03-5706-0931

Email

rinri-shinsa@nittai.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 07 Month 17 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 06 Month 26 Day

Date of IRB

2026 Year 06 Month 26 Day

Anticipated trial start date

2026 Year 07 Month 20 Day

Last follow-up date

2026 Year 09 Month 18 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

Not applicable


Management information

Registered date

2026 Year 07 Month 17 Day

Last modified on

2026 Year 07 Month 17 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000071258