Using synchronous distance education to deliver a weight loss intervention: A randomized trial

Area of Science:

• Health Sciences
• Medical Informatics
• Behavioral Medicine

Background:

• Obesity is a significant public health concern requiring effective interventions.
• Traditional weight loss programs face accessibility challenges.
• Digital health interventions offer scalable solutions for weight management.

Purpose of the Study:

• To evaluate the effectiveness of a synchronous distance education weight loss program.
• To compare the intervention group with a wait-list control group.
• To assess weight loss and secondary outcomes over a 6-month follow-up period.

Main Methods:

• A randomized trial was conducted with adults having a body mass index (BMI) ≥25.
• Participants were assigned to either a 15-week synchronous online weight loss program or a wait-list control.
• Primary outcome was weight loss; secondary outcomes included BMI and behavioral confidence.

Main Results:

• The intervention group achieved significantly greater weight loss (1.8 kg) compared to the control group (0.25 kg) at 15 weeks.
• A significant reduction in BMI was observed in the intervention group (0.71 kg/m²) versus the control group (0.14 kg/m²).
• Weight loss was maintained at the 6-month follow-up, with no significant changes in behavioral confidence.

Conclusions:

• Synchronous distance education is a viable and effective method for delivering weight loss interventions.
• Web-based, synchronous programs show promise for future digital health research in obesity management.
• This approach enhances accessibility to weight management support.