UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000057462
Receipt number R000065656
Scientific Title The Actual Condition of Locomotive Syndrome in Manufacturing Workers and Extraction of Workplace Accident Risk Factors Related to the Severity of the Condition
Date of disclosure of the study information 2025/04/01
Last modified on 2025/03/31 15:31:58

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Basic information

Public title

Research study to clarify the risk of occupational accidents such as falls related to the severity of locomotive syndrome (locomo).

Acronym

Research study to clarify the risk of occupational accidents such as falls related to the severity of locomotive syndrome (locomo).

Scientific Title

The Actual Condition of Locomotive Syndrome in Manufacturing Workers and Extraction of Workplace Accident Risk Factors Related to the Severity of the Condition

Scientific Title:Acronym

The Actual Condition of Locomotive Syndrome in Manufacturing Workers and Extraction of Workplace Accident Risk Factors Related to the Severity of the Condition

Region

Japan


Condition

Condition

Locomotive Syndrome

Classification by specialty

Rehabilitation medicine

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The purpose of this study was to clarify the actual status of locomotive syndrome among workers in the manufacturing industry and to identify risk factors for occupational accidents including falls related to the severity of locomotive syndrome.

Basic objectives2

Others

Basic objectives -Others

In order to achieve the aforementioned research objectives, the following points are planned to be clarified.
(1) To determine the severity of locomotion among workers in the manufacturing industry and to clarify the actual condition of locomotion.
(2) To compare the physical, mental/psychological, and social aspects of locomotion according to the severity of locomotion (normal - locomotion severity 1 - locomotion severity 2 - locomotion severity 3), and to clarify the differences between them.
(3) To extract physical, mental/psychological, and social factors related to the severity of locomo using multivariate analysis (e.g., multinomial logistic regression analysis).

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Occurrence of work-related injuries in subjects with locomo
The severity of locomo in subjects is determined using (1) the locomo rise test, (2) the locomo 2-step test, and (3) the locomo 25 interview, as prescribed by the Japanese Orthopaedic Association. Each subject will participate in periodic in-house health checkups for the degree of locomotion, and all of the tests from (1) to (3) will be conducted.

Key secondary outcomes

(1) Basic information
Basic information including gender, age, medical history, comorbidities, medications (e.g., antihypertensive medications, benzodiazepines), working hours, type of industry, shift work, membership in sports club, history of falls, anthropometric data (Body Mass Index (BMI), muscle mass), grip strength, standing balance ability, walking speed, and specific health checkup questionnaire The basic information including body composition data (Body Mass Index (BMI), muscle mass), grip strength, standing balance ability, walking speed, and specific health checkup questionnaires are directly measured or interviewed.
(2) Loco-mo test
The following tests are used to test the degree of locomotion: (1) Loco-mo rise test, (2) Loco-mo 2-step test, and (3) Loco-mo 25 questionnaire, as specified by the Japanese Orthopaedic Association.
The criteria for determining the degree of locomo in this study is that if any of the aforementioned tests (1) Rise test, (2) 2-step test, and (3) LOKOMO 25 are applicable, the patient is judged to have locomo.


Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


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

18 years-old <=

Age-upper limit

66 years-old >

Gender

Male and Female

Key inclusion criteria

1) Subjects who will work in the manufacturing industry between the date of approval by the head of the research institution and March 31, 2028
2) Subjects who are between 18 and 66 years of age at the time of obtaining consent
3) Subjects who can obtain written consent from the individual for free and voluntary research participation

Key exclusion criteria

(1) Persons with severe functional impairment of motor units and difficulty in performing tests to classify the severity of locomotion
(2) Persons with strong psychiatric symptoms and significant cognitive dysfunction

Target sample size

330


Research contact person

Name of lead principal investigator

1st name Yu
Middle name
Last name Kume

Organization

Akita University

Division name

Graduate School of Medicine

Zip code

010-8543

Address

Hondo1-1-1, Akita city

TEL

0188846556

Email

kume.yuu@hs.akita-u.ac.jp


Public contact

Name of contact person

1st name Yu
Middle name
Last name Kume

Organization

Akita university

Division name

Health Sciences

Zip code

010-8543

Address

Hondo 1-1-1, Akita city

TEL

0188846556

Homepage URL


Email

kume.yuu@hs.akita-u.ac.jp


Sponsor or person

Institute

Akita University

Institute

Department

Personal name

Yu Kume


Funding Source

Organization

Akita 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

Akita University

Address

Hondo 1-1-1, Akita city

Tel

0188846556

Email

kume.yuu@hs.akita-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

2025 Year 04 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

Preinitiation

Date of protocol fixation

2025 Year 02 Month 07 Day

Date of IRB

2025 Year 03 Month 25 Day

Anticipated trial start date

2025 Year 05 Month 01 Day

Last follow-up date

2028 Year 07 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

In this study, the Locomo Degree Test (Japanese Orthopaedic Association) is administered to workers in the manufacturing industry to evaluate the state of locomotive syndrome. The relationship between the severity of locomotive syndrome and basic information including age, gender, industry, history of falls, nighttime sleeping habits, work-life balance, etc. will then be verified. In addition, multivariate analysis will be conducted according to the severity of locomotive syndrome (normal, locomotion level 1, locomotion level 2, and locomotion level 3), and physical, psycho-psychological, and social factors related to locomotive syndrome will be extracted.


Management information

Registered date

2025 Year 03 Month 31 Day

Last modified on

2025 Year 03 Month 31 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000065656