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Name:
UMIN ID:

Recruitment status Completed
Unique ID issued by UMIN UMIN000039162
Receipt No. R000044043
Scientific Title The differences in choice reaction time with changes in trunk tilt and lumbar lordosis angle in Sitting Volleyball
Date of disclosure of the study information 2020/01/15
Last modified on 2021/01/14

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Basic information
Public title The differences in choice reaction time with changes in trunk tilt and lumbar lordosis angle in Sitting Volleyball
Acronym The choice reaction time in Sitting Volleyball
Scientific Title The differences in choice reaction time with changes in trunk tilt and lumbar lordosis angle in Sitting Volleyball
Scientific Title:Acronym The choice reaction time in Sitting Volleyball
Region
Japan

Condition
Condition adult
Classification by specialty
Adult
Classification by malignancy Others
Genomic information NO

Objectives
Narrative objectives1 Sitting Volleyball (SV) is a para-sport mainly played by lower limb disabilities. Players are required to respond quickly to the ball in the sitting position.
For quick responses in the standing position, it is desirable to tilt the trunk forward 1), and the reaction time decreases as the lumbar lordosis angle increases 2). Similarly, SV players are generally coached to tilt their trunk forward with an upright pelvis. However, there are as many players tilt their trunk backward as tilt their trunk forward. It is likely that tilting the trunk backward can move quicker. Trunk tilt and lumbar lordosis angle may affect choice reaction time (CRT) in the sitting position as well as standing position, even though their relationship is unclear.
This study aimed to clarify the influence of the trunk tilt and lumbar lordosis angle on CRT in the sitting position.
Basic objectives2 Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase

Assessment
Primary outcomes 1.choice reaction time
2.lumbar lordosis angle

Both 1 and 2 are measured on the day of measurement
Key secondary outcomes age
hight
body weight
BMI
sports history

Base
Study type Interventional

Study design
Basic design Single arm
Randomization Non-randomized
Randomization unit
Blinding Open -no one is blinded
Control Self control
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment

Intervention
No. of arms 1
Purpose of intervention Educational,Counseling,Training
Type of intervention
Other
Interventions/Control_1 RT was measured by Reaction MR(Takei Scientific Instruments, Japan.). Subjects sat on the center mat placed 1.5 meters ahead of the lamp with their hip and knee joints flexed in forward tilt posture(FTP)and backward tilt posture(BTP). They were instructed to move to left or right direction as soon as possible after light emission. The trunk tilt angle was set at 0 degree when the line joining the acromion and greater trochanter was vertical to the floor. FTP and BTP were defined as trunk forward and backward tilt angles of 20 degree and 30 degree, respectively.
The lumbar lordosis angle at start position was measured by Spinal Mouse(Index, Japan).
Intervention is only on the day of measurement.The measurement is performed three time.
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
20 years-old <=
Age-upper limit
35 years-old >=
Gender Male and Female
Key inclusion criteria 1.Men and women between the age of 20 and 35 at the time of consent
2.At least 5 years of sports experience
3.Those who have written consent to participate in this study
Key exclusion criteria 1.People with orthopedic disease on upper limb, lower limb and trunk at the time of consent
2.People who are deemed inappropriate by the researcher to conduct this research
3.The researcher and the research target are in a teacher-student relationship, and the student is taking a lecture from the researcher
Target sample size 40

Research contact person
Name of lead principal investigator
1st name Yukio
Middle name
Last name Urabe
Organization Graduate School of Hiroshima University
Division name Biomedical & Health Sciences
Zip code 734-8553
Address 1-2-3, Kasumi, Minami-ku, Hiroshima, Japan
TEL 082-257-5405
Email yurabe@hiroshima-u.ac.jp

Public contact
Name of contact person
1st name Noriaki
Middle name
Last name Maeda
Organization Graduate School of Hiroshima University
Division name Biomedical & Health Sciences
Zip code 734-8553
Address 1-2-3, Kasumi, Minami-ku, Hiroshima, Japan
TEL 082-257-5410
Homepage URL
Email norimmi@hiroshima-u.ac.jp

Sponsor
Institute Department of Sport Rehabilitation
Graduate School of Biomedical and Health Science Hiroshima University
1-2-3 Kasumi, Minami-ku, Hiroshima
Japan
Institute
Department

Funding Source
Organization None
Organization
Division
Category of Funding Organization Self funding
Nationality of Funding Organization

Other related organizations
Co-sponsor
Name of secondary funder(s)

IRB Contact (For public release)
Organization Hiroshima University Certified Ethics Committee
Address 1-2-3, Kasumi, Minami-ku, Hiroshima, Japan
Tel 082-257-5555
Email protocol@cimr.hiroshima-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
2020 Year 01 Month 15 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 30
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 Completed
Date of protocol fixation
2020 Year 01 Month 14 Day
Date of IRB
2020 Year 01 Month 14 Day
Anticipated trial start date
2020 Year 01 Month 14 Day
Last follow-up date
2024 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
2020 Year 01 Month 15 Day
Last modified on
2021 Year 01 Month 14 Day


Link to view the page
URL(English) https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000044043

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
Registered date File name


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