UMIN-CTR Clinical Trial
| Unique ID issued by UMIN | UMIN000062008 |
|---|---|
| Receipt number | R000070956 |
| Scientific Title | Evaluation of the Suppressive Effects of Aerobic Exercise on Caffeine Crash in Athletes |
| Date of disclosure of the study information | 2026/06/22 |
| Last modified on | 2026/06/22 16:07:51 |
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Basic information
Public title
Evaluation of the Suppressive Effects of Aerobic Exercise on Caffeine Crash in Athletes
Acronym
Evaluation of the Suppressive Effects of Aerobic Exercise on Caffeine Crash in Athletes
Scientific Title
Evaluation of the Suppressive Effects of Aerobic Exercise on Caffeine Crash in Athletes
Scientific Title:Acronym
Evaluation of the Suppressive Effects of Aerobic Exercise on Caffeine Crash in Athletes
Region
| Japan |
Condition
Condition
healthy adults
Classification by specialty
| Not applicable | Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
Caffeine crash is a condition in which fatigue and reduced concentration occur as caffeine levels in the body decrease, typically about 12 hours after caffeine intake. Previous studies have suggested that aerobic exercise performed approximately 12 hours after caffeine consumption may reduce caffeine crash symptoms. Therefore, the purpose of this study is to evaluate the effects of 10 to 30 minutes of aerobic exercise on caffeine crash symptoms by comparing a group that performs aerobic exercise with a group that does not.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
The following assessments will be conducted approximately 12 hours after caffeine intake. In the aerobic exercise group, participants will be evaluated after completing 10 to 15 minutes of aerobic exercise. In the non-exercise group, participants will be evaluated immediately 12 hours after caffeine intake.
Outcome measures: Subjective fatigue will be assessed using a questionnaire, and cognitive function will be evaluated using the Stroop test.
Key secondary outcomes
Base
Study type
Interventional
Study design
Basic design
Parallel
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
| Food |
Interventions/Control_1
Participants will consume 1.5 mg of caffeine per kilogram of body weight (instant coffee) at 8:00 a.m. The intervention will be administered once daily. In the non-exercise group, assessments will be conducted 12 hours after caffeine ingestion without performing aerobic exercise.
Interventions/Control_2
Participants will consume 1.5 mg of caffeine per kilogram of body weight in the form of instant coffee at 8:00 a.m. Caffeine will be administered once per day.
In the aerobic exercise group, participants will perform 10 to 15 minutes of aerobic exercise 12 hours after caffeine ingestion, followed by the assessment.
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
| 24 | years-old | >= |
Gender
Female
Key inclusion criteria
An information session will be held for approximately 25 female volleyball players. Athletes who fully understand the purpose and procedures of the study and provide written informed consent will be enrolled in the study.
Key exclusion criteria
Athletes who consume caffeinated beverages less than once per week will be considered non-habitual caffeine consumers and will be excluded from the study.
Target sample size
24
Research contact person
Name of lead principal investigator
| 1st name | Hiromi |
| Middle name | |
| Last name | Inaba |
Organization
Niigata University of Health and Welfare
Division name
Department of Health and Nutrition, Faculty of Health Sciences,
Zip code
950-3198
Address
1398 Shimami-cho, Kita-ku, Niigata, JAPAN
TEL
0252574413
inaba@nuhw.ac.jp
Public contact
Name of contact person
| 1st name | Hiromi |
| Middle name | |
| Last name | Inaba |
Organization
Niigata University of Health and Welfare
Division name
Department of Health and Nutrition, Faculty of Health Sciences
Zip code
950-3198
Address
1398 Shimamicho, Kita-ku, Niigata City
TEL
0252574413
Homepage URL
inaba@nuhw.ac.jp
Sponsor or person
Institute
Niigata University of Health and Welfare
Institute
Department
Personal name
Funding Source
Organization
Niigata University of Health and Welfare
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
Niigata University of Health and Welfare
Address
1398 Shimami-cho, Kita-ku, niigata, 950-3198 JAPAN
Tel
0252574413
inaba@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
新潟県
Institutions
Institutions
Other administrative information
Date of disclosure of the study information
| 2026 | Year | 06 | Month | 22 | 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 | 22 | Day |
Date of IRB
Anticipated trial start date
| 2026 | Year | 06 | Month | 22 | Day |
Last follow-up date
| 2027 | 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 | 06 | Month | 22 | Day |
Last modified on
| 2026 | Year | 06 | Month | 22 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070956
