UMIN-ICDS Clinical Trial
| Unique ID issued by UMIN | UMIN000062111 |
|---|---|
| Receipt number | R000071070 |
| Scientific Title | An interventional study to quantify global biomechanics during movements in breakdance using a markerless motion capture system and to evaluate the effects of physical function, frailty-related indices, and other associated factors on movement characteristics |
| Date of disclosure of the study information | 2026/07/01 |
| Last modified on | 2026/07/01 19:13:19 |
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Basic information
Public title
Assessment of global biomechanics during movements in breakdance and evaluation of the effects of related factors: using a markerless motion capture system
Acronym
Breakance Motion Analysis Study
Scientific Title
An interventional study to quantify global biomechanics during movements in breakdance using a markerless motion capture system and to evaluate the effects of physical function, frailty-related indices, and other associated factors on movement characteristics
Scientific Title:Acronym
Breakdance Biomechanics Study
Region
| Japan |
Condition
Condition
Breakdance movements
Classification by specialty
| Orthopedics |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
Breakdancing was included as an official-competition at the 2024 Paris Olympic Games and has attracted attention as a rapidly developing international competitive sport. However, because of its dynamic movements, breakdancing has been reported to have a higher incidence of traumatic injuries and overuse disorders compared with other dance genres. Nevertheless, the injury mechanisms associated with the fundamental and key movements of breakdancing have not yet been sufficiently elucidated. In addition, injury-prevention programs and support systems have not yet been established.
In recent years, motion capture systems have been reported to be useful methods for assessing global biomechanics, including in the medical field. Furthermore, markerless motion capture, which does not require body-surface markers, enables measurement in an environment close to natural conditions for participants while maintaining sufficient measurement accuracy. The purpose of this study is to elucidate the biomechanics of fundamental and key movements in breakdancing, as well as the mechanisms of injury occurrence, using the aforementioned markerless motion capture system. Through this study, we expect to identify the movements and factors that impose excessive loads on specific joints in breakdancing.
Basic objectives2
Others
Basic objectives -Others
The purpose of this study is to elucidate the physical loads imposed by breakdancing movements through medical interviews and measurements. To examine the joint function and joint loading required to perform each breakdancing movement, the range of motion of the extremity joints, joint acceleration, and joint moments will be measured. In addition, the degree of whole-body center-of-mass sway occurring until completion of each movement will be calculated. Differences in these parameters among breakdancing movements will be compared. Furthermore, correlations will be analyzed to determine how participant characteristics and other factors influence these parameters during each type of breakdancing movement.
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
joint angle, angular velocity, and angular acceleration
Key secondary outcomes
Base
Study type
Interventional
Study design
Basic design
Single arm
Randomization
Non-randomized
Randomization unit
Blinding
Open -no one is blinded
Control
Uncontrolled
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment
Intervention
No. of arms
1
Purpose of intervention
Prevention
Type of intervention
| Other |
Interventions/Control_1
After medical interviews and physical measurements, participants will be asked to perform designated fundamental and key breakdancing movements. During each movement, the range of motion of the extremity joints, joint angles, angular velocity, angular acceleration, joint moments, and whole-body center-of-mass sway will be measured using a markerless motion capture system.
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
| 6 | years-old | <= |
Age-upper limit
| Not applicable |
Gender
Male and Female
Key inclusion criteria
Participants who meet all of the following criteria will be included:
1. Instructors or students belonging to a breakdancing school
2. Age 6 years or older
3. Ability of the participant or a legally authorized representative to respond to the medical interview
4. Healthy individuals
5. Ability to maintain or perform fundamental breakdancing postures, including handstand, chair freeze, and footwork, for at least 5 seconds each
6. Ability to perform at least five consecutive rotations of the basic spinning technique known as the windmill
Key exclusion criteria
Participants who meet any of the following criteria will be excluded:
1. Individuals who are unable to respond to the medical interview, except for children whose legally authorized representatives are able to respond.
2. Individuals who have an injury under treatment at the time of study participation.
3. Individuals who have musculoskeletal diseases or disorders related to dance movements at the time of study participation.
4. Individuals who are judged by the investigators to have difficulty participating in the study or undergoing the measurements.
5. Individuals who are judged by the investigators to have severe psychosocial disorders that may substantially affect the study results or their participation in the study.
Target sample size
100
Research contact person
Name of lead principal investigator
| 1st name | Takashi |
| Middle name | |
| Last name | Tsuda |
Organization
Ehime University Graduate School of Medicine
Division name
Department of Orthopaedic Surgery
Zip code
791-0295
Address
Shitsukawa, Toon City, Ehime, Japan
TEL
0899605343
tsuda.takashi.hz@ehime-u.ac.jp
Public contact
Name of contact person
| 1st name | Takashi |
| Middle name | |
| Last name | Tsuda |
Organization
Ehime University Graduate School of Medicine
Division name
Department of Orthopaedic Surgery
Zip code
791-0295
Address
Shitsukawa, Toon City, Ehime, Japan
TEL
0899605343
Homepage URL
tsuda.takashi.hz@ehime-u.ac.jp
Sponsor or person
Institute
Ehime University
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
Institutional Review Board,Ehime University Hospital
Address
454 Shitsukawa, Toon, Ehime
Tel
089-960-5172
rinri@m.ehime-u.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 | 01 | 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
Enrolling by invitation
Date of protocol fixation
| 2024 | Year | 08 | Month | 16 | Day |
Date of IRB
| 2024 | Year | 08 | Month | 16 | Day |
Anticipated trial start date
| 2024 | Year | 08 | Month | 16 | Day |
Last follow-up date
| 2029 | 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 | 07 | Month | 01 | Day |
Last modified on
| 2026 | Year | 07 | Month | 01 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000071070
