UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000057675
Receipt number R000065904
Scientific Title Health Promotion through Workplace Indoor Cycling Intervention for Taxi Drivers with Elevated Body Fat
Date of disclosure of the study information 2025/07/30
Last modified on 2025/04/21 23:56:11

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Basic information

Public title

Health Promotion through Workplace Indoor Cycling Intervention for Taxi Drivers with Elevated Body Fat

Acronym

HEALTH CYCLING Study

Scientific Title

Health Promotion through Workplace Indoor Cycling Intervention for Taxi Drivers with Elevated Body Fat

Scientific Title:Acronym

HEALTH CYCLING Study

Region

Japan


Condition

Condition

obesity

Classification by specialty

Cardiology Nursing Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

This study aims to test the hypothesis that implementing indoor cycling at the workplace, in addition to dietary guidance, can reduce body fat percentage while maintaining lean body mass among male taxi drivers with a BMI of 25 kg/m2 or higher or a body fat percentage of 25% or higher.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

The primary outcome is the change in body fat percentage measured by InBody H30 between the start of the intervention and 90 days after the intervention begins.

Key secondary outcomes

Difference in lean body mass measured by InBody H30 between baseline and 90 days after the start of the intervention
Difference in skeletal muscle mass measured by InBody H30 between baseline and 90 days after the start of the intervention
Difference in BMI measured by InBody H30 between baseline and 90 days after the start of the intervention
Difference in basal metabolic rate measured by InBody H30 between baseline and 90 days after the start of the intervention
Difference in systolic blood pressure between baseline and 90 days after the start of the intervention
Difference in LDL-C between baseline and 90 days after the start of the intervention
Difference in HDL-C between baseline and 90 days after the start of the intervention
Difference in Work Productivity and Activity Impairment (WPAI) scores between baseline and 90 days after the start of the intervention
Difference in SF-12 scores between baseline and 90 days after the start of the intervention
Difference in scores on the Japanese version of the Subjective Happiness Scale (SHS) between baseline and 90 days after the start of the intervention
Difference in scores on the Interdependent Happiness Scale (IHS) between baseline and 90 days after the start of the intervention


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is blinded

Control

Active

Stratification

YES

Dynamic allocation

NO

Institution consideration

Institution is not considered as adjustment factor.

Blocking

NO

Concealment

Numbered container method


Intervention

No. of arms

2

Purpose of intervention

Prevention

Type of intervention

Behavior,custom

Interventions/Control_1

In addition to distributing a pamphlet created by a registered dietitian from the health screening division who is responsible for specific health guidance during workplace health checkups, participants will perform aerobic exercise using fitness bikes installed at each workplace for 30 minutes on workdays, at least three times per week.

Interventions/Control_2

A pamphlet prepared by a registered dietitian in charge of specific health guidance during workplace health checkups will be distributed

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

70 years-old >=

Gender

Male

Key inclusion criteria

Male taxi drivers aged between 20 and 70 years
Individuals without a pacemaker or implantable cardioverter-defibrillator, and who can be safely measured using the InBody H30
Individuals with a BMI of 25 kg/m2 or higher, or a body fat percentage of 25% or higher as measured by the InBody H30

Key exclusion criteria

Individuals who are unable to use a smartphone Individuals with orthopedic or neurological conditions that prevent safe use of a bicycle Individuals experiencing chest pain, shortness of breath, palpitations, or joint pain in the lower limbs at rest Individuals who develop chest pain, shortness of breath, palpitations, or joint pain in the lower limbs during daily activities Individuals with implanted metal plates or similar devices Individuals currently undergoing cardiac rehabilitation Individuals with untreated grade three hypertension (systolic blood pressure >=180 mmHg and/or diastolic blood pressure >=110 mmHg), or symptomatic hypertension (with headache) Individuals with symptomatic heart disease (coronary artery disease, valvular disease, arrhythmias, heart failure) who have been advised by a physician to avoid exercise Individuals with other medical conditions that may be aggravated by physical activity Individuals who have been instructed by their primary care physician to restrict physical activity

Target sample size

80


Research contact person

Name of lead principal investigator

1st name Eri
Middle name
Last name Kato

Organization

Kyoto University Hospital Department of Cardiology

Division name

Center for Precision Medicine and Lifestyle-Related Disease Research

Zip code

606-8507

Address

Kyoto University Graduate School of Medicine Doctor of Medicine Course 54 Shogoin Kawahara-cho,Sakyo-ku, Kyoto

TEL

075-751-4255

Email

erikato@kuhp.kyoto-u.ac.jp


Public contact

Name of contact person

1st name Eri
Middle name
Last name Kato

Organization

Kyoto University Hospital Department of Cardiology

Division name

Center for Precision Medicine and Lifestyle-Related Disease Research

Zip code

606-8507

Address

Kyoto University Graduate School of Medicine Doctor of Medicine Course 54 Shogoin Kawahara-cho,Sakyo

TEL

075-751-4255

Homepage URL

http://kyoto-u-cardio.jp/shinryo/rinsyo/clinicalresearch

Email

ctsodan@kuhp.kyoto-u.ac.jp


Sponsor or person

Institute

Kyoto University

Institute

Department

Personal name



Funding Source

Organization

CYCLE Hub & Port

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Kyoto University Hospital

Address

54 Shogoin Kawahara-cho,Sakyo-ku, Kyoto

Tel

075-751-4255

Email

erikato@kuhp.kyoto-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 07 Month 30 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 04 Month 21 Day

Date of IRB


Anticipated trial start date

2025 Year 06 Month 01 Day

Last follow-up date

2025 Year 12 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

2025 Year 04 Month 21 Day

Last modified on

2025 Year 04 Month 21 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000065904