Intervention Study: Genetic Risk Communication and Wearables

NCT ID: NCT04879758

Last Updated: 2021-07-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-07-07

Study Completion Date

2024-05-31

Brief Summary

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This study aims to determine the effects of communicating genetic risk for type 2 diabetes (T2D) alone or in combination with goal setting and prompts from a wearable device on objectively measured physical activity (PA) and sedentary behavior (SB) in East Asians. It is hypothesized that this combination will lead to significant favorable changes in objectively measured PA and SB, and that such changes will be more likely to be sustained over 6-month follow-up.

This study aims to recruit 150 healthy East Asian adults in Hong Kong. At baseline, participants will be invited to visit the research laboratory for measurement of a series of variables including height, body weight, blood pressure and grip strength. Participants will also be invited to complete a set of questionnaires to assess their self-reported PA and SB, fruit and vegetable consumption, smoking status and psychological variables. Blood samples will be collected to analyze key diabetes and cardiovascular disease biochemical markers as well as their estimated genetic risk of T2D. Each individual's unique genetic risk for T2D will be estimated on the basis of established genetic variants associated with T2D specifically for East Asians. Each participant will be asked to wear a Fitbit Charge 4 tracker, an objective activity monitoring device, throughout the entire trial.

Participants will be randomly allocated into 3 groups: 1 control and 2 intervention groups. A control group will receive an e-leaflet containing general lifestyle advice for prevention of T2D. An intervention group will receive an estimated genetic risk of T2D, in addition to the e-leaflet. The other intervention group will have a Fitbit step goal set 10% higher than their baseline step count and use prompt functions of the Fitbit tracker, in addition to the genetic risk estimate and e-leaflet.

Activity data from the Fitbit will be collected at 4-week post-intervention; information about lifestyle and psychological variables will be assessed through the questionnaires at both immediate and 4-week post-intervention. To determine the longer-term effect of the intervention, participants will be asked to visit the research laboratory 6 months after the intervention to repeat the same set of assessments as baseline, except the blood samples collected at 6-month follow-up are used only to analyze cardiometabolic risk profiles (not genetic risk). Activity levels will also be objectively measured using the Fitbit for 4 weeks.

Detailed Description

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Conditions

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Fitness Trackers Sedentary Behavior Exercise Genetic Predisposition to Disease Type 2 Diabetes

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

parallel-group, open randomized controlled trial
Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Investigators Outcome Assessors
Group allocation will be concealed from study staff until the 7-day pre-intervention period begins (for preparation of corresponding e-leaflets, genetic risk estimates and/or baseline Fitbit step goal calculations), and from participants until the interventions are delivered. Given the nature of the interventions delivered, it will be impossible for participants to be blinded to the specific intervention they receive once the initial interventions are provided; however, study staff analyzing participants' de-identified data will remain blinded to participant randomization assignment.

Study Groups

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Control Group

The control group will receive a Fitbit device and general lifestyle advice e-leaflet, which includes information about T2D, health impacts of T2D and lifestyle advice on 4 major risk markers of T2D (e.g., PA, diet, smoking, weight management) as recommended by the World Health Organization.

Group Type NO_INTERVENTION

No interventions assigned to this group

Intervention Group - Genetic Risk Estimate

This intervention group will receive an estimated genetic risk of T2D in addition to the Fitbit and e-leaflet.

Group Type EXPERIMENTAL

Genetic Risk Estimate

Intervention Type GENETIC

The genetic risk information includes individual remaining-lifetime and 10-year genetic risk estimates for T2D as well as a dichotomized genetic risk category: 'increased genetic risk' (if their genetic risk is higher than the average population risk) or 'no increased genetic risk' (if their genetic risk is not higher than the average population risk).

Intervention Group - Genetic Risk Estimate + Fitbit Functions

This intervention group will receive a Fitbit device, but have a Fitbit step goal set 10% higher than their baseline step count, and use its prompt functions, in addition to the genetic risk estimate and e-leaflet.

Group Type EXPERIMENTAL

Genetic Risk Estimate + Fitbit Functions

Intervention Type OTHER

The genetic risk information includes individual remaining-lifetime and 10-year genetic risk estimates for T2D as well as a dichotomized genetic risk category: 'increased genetic risk' (if their genetic risk is higher than the average population risk) or 'no increased genetic risk' (if their genetic risk is not higher than the average population risk).

The two unique Fitbit functions are step goal setting and prompts. Individualized daily step goals will be set to be 10% higher than participants' own baseline Fitbit step counts. The 'Reminder To Move' function of Fitbit will be used as a prompt to remind participants to reduce sedentary time and walk at least 250 steps/hour within a specified timeframe (i.e., from 9am to 10pm in the proposed research). If the user has not accumulated at least 250 steps/hour, a reminder (for example, 150 steps to go) will appear on the Fitbit screen at 10 minutes before the hour (for example, at 10:50 a.m.) and cause the device to vibrate.

Interventions

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Genetic Risk Estimate

The genetic risk information includes individual remaining-lifetime and 10-year genetic risk estimates for T2D as well as a dichotomized genetic risk category: 'increased genetic risk' (if their genetic risk is higher than the average population risk) or 'no increased genetic risk' (if their genetic risk is not higher than the average population risk).

Intervention Type GENETIC

Genetic Risk Estimate + Fitbit Functions

The genetic risk information includes individual remaining-lifetime and 10-year genetic risk estimates for T2D as well as a dichotomized genetic risk category: 'increased genetic risk' (if their genetic risk is higher than the average population risk) or 'no increased genetic risk' (if their genetic risk is not higher than the average population risk).

The two unique Fitbit functions are step goal setting and prompts. Individualized daily step goals will be set to be 10% higher than participants' own baseline Fitbit step counts. The 'Reminder To Move' function of Fitbit will be used as a prompt to remind participants to reduce sedentary time and walk at least 250 steps/hour within a specified timeframe (i.e., from 9am to 10pm in the proposed research). If the user has not accumulated at least 250 steps/hour, a reminder (for example, 150 steps to go) will appear on the Fitbit screen at 10 minutes before the hour (for example, at 10:50 a.m.) and cause the device to vibrate.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* East Asian ancestry
* Aged 40-60 years
* Able to perform daily-living physical activity
* Able to use English to communicate
* Use a smartphone

Exclusion Criteria

* have been diagnosed with any type of diabetes
* pregnant or lactating
* unable to perform daily-life physical activities (determined through Physical Activity Readiness Questionnaire \[PAR-Q\])
* participating in another research study or exercise programs
* had experience of genetic testing
* cannot use English
Minimum Eligible Age

40 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The University of Hong Kong

OTHER

Sponsor Role lead

Responsible Party

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Dr. Kim, Youngwon

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Youngwon Kim

Role: PRINCIPAL_INVESTIGATOR

The University of Hong Kong

Locations

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Exercise Physiology Lab, The University of Hong Kong

Hong Kong, , Hong Kong

Site Status RECRUITING

Countries

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Hong Kong

Central Contacts

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Youngwon Kim

Role: CONTACT

(+852)28315252

Facility Contacts

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Youngwon Kim

Role: primary

(+852)28315252

Other Identifiers

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geneticriskwearabletrial

Identifier Type: -

Identifier Source: org_study_id

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