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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
HEALTH_SERVICES_RESEARCH
Masking
DOUBLE
Enrollment
84
A smartphone-delivered AI-based chatbot program designed to provide personalized physical activity and dietary recommendations
The Hong Kong Polytechnic University
Hong Kong, Hong Kong
RECRUITINGThe 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)
Time frame: 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.
Time frame: 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.
Time frame: End of study (2 months)
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.
Time frame: Baseline, end of study (2 months)
Change of walking, as measured by the Community Health Activities Model Program for Seniors questionnaire
The Community Health Activities Model Program for Seniors questionnaires (CHAMPS-Q) measures weekly frequency and duration of walking
Time frame: Baseline, end of study (2 months)
Change of total activity and moderate and more vigorous physical activity variables, as measured by the CHAMPS-Q
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The CHAMPS-Q measures weekly frequency and duration of a variety of lifestyle physical activities
Time frame: 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)
Time frame: Baseline, end of study (2 months)