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The purpose of this study is to evaluate the acceptability and preliminary effectiveness of a smartphone-delivered AI-based chatbot in promoting healthy dietary behavior and physical activity participation among older adults.
The purpose of this study is to evaluate the preliminary effectiveness of a smartphone-delivered AI-based chatbot in promoting healthy dietary behavior and physical activity participation among older adults. It is a preliminary study with two arms.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Chatbot-based intervention | Experimental | Participants will immediately receive access to a 2-month chatbot-based intervention |
|
| Waitlist | Other | Participants will be placed on a waiting list before accessing the intervention |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| A chatbot-based intervention | Other | A smartphone-delivered AI-based chatbot program designed to provide personalized physical activity and dietary recommendations |
|
| Measure | Description | Time Frame |
|---|---|---|
| The acceptance of the chatbot among older adults, as measured by a 14-item simplified version of the Senior Technology Acceptance Model questionnaire | The 14-item questionnaire uses a 10-point Likert scale, ranging from 0 (strongly disagree, very poor, very uneasy, and very unsatisfied) to 10 (strongly agree, very good, very easy, and very satisfied) | End of study (2 months) |
| The Usability of the chatbot, as measured by the System Usability Scale | The System Usability Scale (SUS) is a 10-item Likert scale questionnaire. The result of this survey is called SUS score, which ranges from 0 to 100 and provides information about overall customer satisfaction and usability. A higher score indicates better usability, while a lower score may suggest usability issues. | End of study (2 months) |
| The user experience, as measured by 10 open-ended questions | A qualitative interview will be provided to the participants for asking their experience in using chatbot. | End of study (2 months) |
| Measure | Description | Time Frame |
|---|---|---|
| Change of dietary behavior, as measured by the intake of fruits and vegetables over the last seven days | We will ask them the amount of fruit and vegetable intake at baseline and end of study. | Baseline, end of study (2 months) |
| Change of walking, as measured by the Community Health Activities Model Program for Seniors questionnaire |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Arkers Wong, PhD | Contact | +85234003805 | arkers.wong@polyu.edu.hk | |
| Qian Zhang, MSc | Contact | +85264321063 | melissa440.zhang@connect.polyu.hk |
| Name | Affiliation | Role |
|---|---|---|
| Arkers Wong, PhD | The Hong Kong Polytechnic University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The Hong Kong Polytechnic University | Recruiting | Hong Kong | Hong Kong |
No sharing of data except reasonable request.
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The Community Health Activities Model Program for Seniors questionnaires (CHAMPS-Q) measures weekly frequency and duration of walking |
| Baseline, end of study (2 months) |
| Change of total activity and moderate and more vigorous physical activity variables, as measured by the CHAMPS-Q | The CHAMPS-Q measures weekly frequency and duration of a variety of lifestyle physical activities | Baseline, end of study (2 months) |
| Change of quality of life, as measured by the Hong Kong Quality of Life for Older Persons Scale | The Hong Kong Quality of Life for Older Persons Scale (HKQoLOCP) comprises a total of 21 items that can be categorized into different domains: subjective well-being, consisting of 4 items; health, comprising 5 items; interpersonal relationships, including 6 items; achievement-recognition, with 4 items; and finance and living conditions (1 item each) | Baseline, end of study (2 months) |