UMIN-CTR Clinical Trial
| Unique ID issued by UMIN | UMIN000062714 |
|---|---|
| Receipt number | R000071796 |
| Scientific Title | Immediate Effects of Verbal Instruction to Raise the Elbow on Kinematic Factors During the Late Cocking Phase of Pitching Motion in Junior High School Baseball Players |
| Date of disclosure of the study information | 2026/08/27 |
| Last modified on | 2026/08/27 18:56:28 |
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Basic information
Public title
Effects of Pitching Form Instruction on Pitching Motion in Junior High School Baseball Players
Acronym
A Study on Pitching Instruction
Scientific Title
Immediate Effects of Verbal Instruction to Raise the Elbow on Kinematic Factors During the Late Cocking Phase of Pitching Motion in Junior High School Baseball Players
Scientific Title:Acronym
Effects of an Elbow-Up Instruction on the Late Cocking Phase in Junior High School Baseball Players
Region
| Japan |
Condition
Condition
Healthy Male Junior High School Baseball Players
Classification by specialty
| Rehabilitation medicine |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
To investigate the immediate effects of a verbal motor instruction to raise the elbow during pitching on the kinematic parameters of the shoulder, elbow, trunk, and pelvis at maximum shoulder external rotation during the late cocking phase of pitching in junior high school male baseball players, using motion sensors, high speed cameras, and a speed gun.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Exploratory
Trial characteristics_2
Explanatory
Developmental phase
Not applicable
Assessment
Primary outcomes
Proximal medial forearm acceleration at maximum shoulder external rotation during the late cocking phase of pitching.
Key secondary outcomes
Kinematic parameters including joint angles, acceleration, and angular velocity of the shoulder, elbow, trunk, and pelvis at maximum shoulder external rotation during the late cocking phase of pitching, and ball velocity at release.
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
NO
Dynamic allocation
NO
Institution consideration
Institution is not considered as adjustment factor.
Blocking
YES
Concealment
No need to know
Intervention
No. of arms
2
Purpose of intervention
Educational,Counseling,Training
Type of intervention
| Behavior,custom |
Interventions/Control_1
Participants will perform maximal effort pitches after receiving a verbal motor instruction to raise the elbow during pitching.
Interventions/Control_2
Participants perform maximal-effort pitching as usual without any verbal instruction.
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
| 12 | years-old | <= |
Age-upper limit
| 15 | years-old | >= |
Gender
Male
Key inclusion criteria
Male baseball players enrolled in junior high school whose parents or legal guardians provided informed consent for participation in the study. Participants must be right-handed pitchers and judged by the principal investigator to be able to participate in pitching motion measurements.
Key exclusion criteria
1. Participants who have pain in the shoulder, elbow, upper extremity, or lower back at the time of study participation.
2. Participants who have received medical treatment for throwing-related injuries within the past 3 months.
3. Participants who have orthopedic diseases or a history of surgery that may affect pitching motion.
4. Participants who have difficulty understanding the study procedures or performing the prescribed pitching tasks.
Target sample size
50
Research contact person
Name of lead principal investigator
| 1st name | Yasumitsu |
| Middle name | |
| Last name | Tanaka |
Organization
Ureshino Fukuda Hospital
Division name
Department of Rehabilitation
Zip code
843-0301
Address
4714-10 Shimojukuko, Ureshino-Town, Ureshino City, Saga 843-0301, Japan
TEL
0954-42-2221
pttanaka0313@gmail.com
Public contact
Name of contact person
| 1st name | Yasumitsu |
| Middle name | |
| Last name | Tanaka |
Organization
Ureshino Fukuda Hospital
Division name
Department of Rehabilitation
Zip code
843-0301
Address
4714-10 Shimojukuko, Ureshino-Town, Ureshino City, Saga 843-0301, Japan
TEL
0954-42-2221
Homepage URL
pttanaka0313@gmail.com
Sponsor or person
Institute
Ureshino Fukuda Hospital
Institute
Department
Personal name
Funding Source
Organization
Yamagata Prefectural University of Health Sciences
Organization
Division
Category of Funding Organization
Other
Nationality of Funding Organization
Other related organizations
Co-sponsor
Yamagata Prefectural University of Health Sciences
Name of secondary funder(s)
IRB Contact (For public release)
Organization
Yamagata Prefectural University of Health Sciences Ethics Committee
Address
260 Kamiyanagi, Yamagata-City, Yamagata 990-2212, Japan
Tel
023-686-6611
soumu@yachts.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 | 08 | Month | 27 | 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 | 02 | Month | 01 | Day |
Date of IRB
| 2026 | Year | 03 | Month | 23 | Day |
Anticipated trial start date
| 2026 | Year | 09 | Month | 01 | Day |
Last follow-up date
| 2026 | Year | 11 | Month | 21 | Day |
Date of closure to data entry
| 2026 | Year | 12 | Month | 13 | Day |
Date trial data considered complete
| 2026 | Year | 12 | Month | 27 | Day |
Date analysis concluded
| 2027 | Year | 02 | Month | 28 | Day |
Other
Other related information
Management information
Registered date
| 2026 | Year | 08 | Month | 27 | Day |
Last modified on
| 2026 | Year | 08 | Month | 27 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000071796
