UMIN-CTR Clinical Trial
| Unique ID issued by UMIN | UMIN000061671 |
|---|---|
| Receipt number | R000070565 |
| Scientific Title | Immediate effects of attentional focus instructions during squatting on impact absorption strategies during drop landing: a randomized controlled trial |
| Date of disclosure of the study information | 2026/05/23 |
| Last modified on | 2026/05/23 22:30:54 |
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Basic information
Public title
Effects of attentional focus instructions during squatting on landing movements
Acronym
Attentional focus and landing study
Scientific Title
Immediate effects of attentional focus instructions during squatting on impact absorption strategies during drop landing: a randomized controlled trial
Scientific Title:Acronym
Attentional Focus Squat-Drop Landing Study
Region
| Japan |
Condition
Condition
Healthy adults
Classification by specialty
| Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
This study aims to examine whether internal or external attentional focus instructions during bodyweight squat practice induce immediate changes in impact absorption strategies during drop landing, shifting from a knee-dominant strategy toward a hip-dominant strategy, in healthy adults.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
Peak hip flexion angle, peak knee flexion angle, negative hip joint work, and negative knee joint work during drop landing, assessed before and immediately after the intervention.
Key secondary outcomes
Base
Study type
Interventional
Study design
Basic design
Parallel
Randomization
Randomized
Randomization unit
Individual
Blinding
Open -no one is blinded
Control
Active
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment
Intervention
No. of arms
2
Purpose of intervention
Educational,Counseling,Training
Type of intervention
| Behavior,custom |
Interventions/Control_1
Participants perform bodyweight squat practice once on the same day between pre intervention and post intervention assessments The practice consists of 3 sets of 10 repetitions with 60 seconds rest between sets Posture conditions and movement tempo are standardized to match the assessment task Attentional focus instructions are provided only during the descending phase of the squat Participants in the internal focus group are instructed to take 2 seconds to lower the body by flexing the hips and moving the buttocks backward The instruction is provided once before each set and one brief reminder is provided during each set If participants report pain or physical discomfort the exercise is stopped immediately and the session is paused or discontinued as necessary
Interventions/Control_2
Participants perform bodyweight squat practice once on the same day between pre intervention and post intervention assessments The practice consists of 3 sets of 10 repetitions with 60 seconds rest between sets Posture conditions and movement tempo are standardized to match the assessment task Attentional focus instructions are provided only during the descending phase of the squat In the external focus group a box is placed behind the participant at a height that allows the buttocks to contact the box when the thighs are parallel to the floor Participants are instructed to take 2 seconds to lower the body toward the box behind them and lightly touch it The instruction is provided once before each set and one brief reminder is provided during each set If participants report pain or physical discomfort the exercise is stopped immediately and the session is paused or discontinued as necessary
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
| 25 | years-old | >= |
Gender
Male and Female
Key inclusion criteria
Healthy adults aged 18 years or older who receive an explanation of the study and provide written informed consent.
Key exclusion criteria
History of lower-limb injury or surgery within the past 6 months, current musculoskeletal disorders under treatment, or cardiovascular or neurological disorders that restrict exercise participation.
Target sample size
30
Research contact person
Name of lead principal investigator
| 1st name | Makoto |
| Middle name | |
| Last name | Suzuki |
Organization
Hokkaido Bunkyo University
Division name
Faculty of Medical and Health Sciences
Zip code
0611449
Address
5-196-1 Koganechuo, Eniwa, Hokkaido, Japan
TEL
0123340261
m.suzuki@do-bunkyodai.ac.jp
Public contact
Name of contact person
| 1st name | Makoto |
| Middle name | |
| Last name | Suzuki |
Organization
Hokkaido Bunkyo University
Division name
Faculty of Medical and Health Sciences
Zip code
0611449
Address
5-196-1 Koganechuo, Eniwa, Hokkaido, Japan
TEL
0123340261
Homepage URL
m.suzuki@do-bunkyodai.ac.jp
Sponsor or person
Institute
Hokkaido Bunkyo University
Institute
Department
Personal name
Funding Source
Organization
Hokkaido Bunkyo University
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
Research Ethics Committee of Hokkaido Bunkyo University
Address
5-196-1 Koganechuo, Eniwa, Hokkaido, Japan
Tel
0123340063
daigakuhyouka_ir@do-bunkyodai.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 | 05 | Month | 23 | 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 | 05 | Month | 23 | Day |
Date of IRB
Anticipated trial start date
| 2026 | Year | 05 | Month | 25 | Day |
Last follow-up date
| 2027 | Year | 05 | Month | 25 | 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 | 05 | Month | 23 | Day |
Last modified on
| 2026 | Year | 05 | Month | 23 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070565
