Design This a randomized controlled study comparing a standard weight management program
of face-to-face (F2F) consults with doctors (endocrinologists and sports medicine
physicians) and dieticians as defined by best-practice guidelines (control), or to the
OneSTOP (One-Stop Telecare Obesity Program) a novel weight management intervention
incorporating telecare and the EMPOWER app jointly developed by SingHealth and the NUS
School of Computing.
Standard of care (control) The standard F2F structured weight management program consists
of 4 doctor and 4 dietician consults over 26 weeks, at 2-4 weekly intervals in the first
3 months, and 6-8 weeks in the next 3 months. At the baseline visit, participants are
provided with an aerobic and resistance exercise prescription individualized to each
subject's fitness and comorbidities to target at least 180 minutes/week of
moderate-intensity physical activity (with exercise on at least 3 days/week), and dietary
advice based on a calorie-deficit diet (400-600 kilocalories less than the calculated
daily caloric requirement, based on the Mifflin-St Jeor equation) which emphasizes
reduction in sugar-sweetened beverages, refined carbohydrates and saturated fats.
Subjects will be provided with a list of fitness resources such as gyms and fitness
corners with advice on use of the equipment, and specific guidance on increasing
intensity and duration of exercise and monitoring for injury. Dietary advice will be
based on standard guidelines to target a calorie-deficit of 400-600 kcal from baseline.
All subjects will keep food diaries and records of exercise duration for review and will
also be provided with links to online resources for health advice and generic apps to
track their calorie intake and physical activity. At each visit, exercise and diet
records and/or results of investigations will be reviewed, and lifestyle advice modified
to target at least 5% weight loss.
Intervention This will incorporate at least 50% (4 out of 8 sessions) of the doctor and
dietician consults over the 26-week study as teleconsults, which may be scheduled as
joint or asynchronous consults. The exercise prescription will likewise be tailored to
each subject's individual needs as in the F2F structured weight management program in the
control group, and similar dietary advice and reviews will be provided. In addition,
participants will be taught to use the EMPOWER app will be used to enable them to upload
their weight, blood pressure and glucose, food and exercise duration records. The app
also has the capability to co-ordinate visits and investigations, deliver intelligent
health nudges and reminders on adherence to treatment which can be individualized to
their progress, and provide information on their conditions with additional information
curated by their doctors and dieticians. Subjects will be able to compare the photos of
their food with that in a database on the app, which will make calorie counting more
precise. The app will also be paired with an activity tracker for more accurate estimates
of exercise duration. Similar to the standard program, doctors and dieticians will review
the exercise and diet records, results of investigations, and modify treatment according
to patient response, according to standard care guidelines, aiming for at least 5% weight
loss.
