UMIN-CTR Clinical Trial
| Unique ID issued by UMIN | UMIN000063014 |
|---|---|
| Receipt number | R000072133 |
| Scientific Title | Acute effect of caffeine on sprint running performance under simulated competitive schedule in track-and-field athletes |
| Date of disclosure of the study information | 2026/09/21 |
| Last modified on | 2026/09/22 14:48:02 |
* This page includes information on clinical trials registered in UMIN clinical trial registed system.
* We don't aim to advertise certain products or treatments
Basic information
Public title
The effect of caffeine on sprint running performance in track-and-field athletes
Acronym
Caffeine and sprint running
Scientific Title
Acute effect of caffeine on sprint running performance under simulated competitive schedule in track-and-field athletes
Scientific Title:Acronym
Caffeine and sprint running
Region
| Japan |
Condition
Condition
Healthy track-and-field athletes
Classification by specialty
| Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
To investigate the acute effect of caffeine supplementation on sprint running performance in track-and-field athletes during the time schedule of competitions.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
Sprint running performance (60-m sprint time, sprint velocity, reaction time at the start)
Key secondary outcomes
Plasma caffeine concentration, Caffeine-related subjective feelings (side effects and withdrawal symptoms)
Base
Study type
Interventional
Study design
Basic design
Cross-over
Randomization
Randomized
Randomization unit
Individual
Blinding
Double blind -all involved are blinded
Control
Placebo
Stratification
NO
Dynamic allocation
NO
Institution consideration
Institution is not considered as adjustment factor.
Blocking
YES
Concealment
Numbered container method
Intervention
No. of arms
6
Purpose of intervention
Treatment
Type of intervention
| Food |
Interventions/Control_1
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
A: PL-PL -> CF-PL -> CF-CF
Interventions/Control_2
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
B: PL-PL -> CF-CF -> CF-PL
Interventions/Control_3
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
C: CF-PL -> PL-PL -> CF-CF
Interventions/Control_4
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
D: CF-PL -> CF-CF -> PL-PL
Interventions/Control_5
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
E: CF-CF -> PL-PL -> CF-PL
Interventions/Control_6
During one experimental day, the below combination of (the first 60-m sprint)-(the second 60-m sprint) with ingesting placebo (PL) or caffeine (CF) is performed. Washout periods are set between experimental days.
F: CF-CF -> CF-PL -> PL-PL
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10
Eligibility
Age-lower limit
| 18 | years-old | <= |
Age-upper limit
| 40 | years-old | >= |
Gender
Male and Female
Key inclusion criteria
1: Sprinters, hurdlers, or jumpers who have training habituation (2 h/day, 5 days/week, and equal to more than 1 year) to improve athletic performance
2: Athletes who can perform all-out sprint running
Key exclusion criteria
1: Smoking status within one year
2: Injury which makes difficult to perform all-out sprint running
3: Cardiovascular or mental diseases
4: An allergy of caffeine or prescribed meals
Target sample size
30
Research contact person
Name of lead principal investigator
| 1st name | Takeshi |
| Middle name | |
| Last name | Hashimoto |
Organization
Ritsumeikan University
Division name
Faculty of Sport and Health Science
Zip code
525-8577
Address
1-1-1, Noji-Higashi, Kusatsu, Shiga, Japan
TEL
077-599-4134
thashimo@fc.ritsumei.ac.jp
Public contact
Name of contact person
| 1st name | Takeshi |
| Middle name | |
| Last name | Hashimoto |
Organization
Ritsumeikan University
Division name
Faculty of Sport and Health Science
Zip code
525-8577
Address
1-1-1, Noji-Higashi, Kusatsu, Shiga, Japan
TEL
077-599-4134
Homepage URL
thashimo@fc.ritsumei.ac.jp
Sponsor or person
Institute
Ritsumeikan University
Institute
Department
Personal name
Takeshi Hashimoto
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
Ritsumeikan University IRB
Address
1-1-1, Noji-Higashi, Kusatsu, Shiga
Tel
077-599-4175
b-rinri@st.ritsumei.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 | 09 | Month | 21 | 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
Open public recruiting
Date of protocol fixation
| 2026 | Year | 09 | Month | 17 | Day |
Date of IRB
| 2026 | Year | 09 | Month | 17 | Day |
Anticipated trial start date
| 2026 | Year | 09 | Month | 22 | Day |
Last follow-up date
| 2026 | Year | 11 | 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 | 09 | Month | 21 | Day |
Last modified on
| 2026 | Year | 09 | Month | 22 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000072133
