Related Experiment Video
Updated: Jun 20, 2026
05:10
Multidisciplinary Approach to Obesity Management: A Case Report
Published on: May 30, 2025
Pounds Off Digitally study: a randomized podcasting weight-loss intervention
Gabrielle M Turner-McGrievy1, Marci K Campbell, Deborah F Tate
1Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7461, USA. brie@unc.edu
American Journal of Preventive Medicine
|September 22, 2009
Summary
A theory-based weight-loss podcast significantly reduced weight and BMI in overweight adults compared to a standard podcast. This enhanced podcast also improved knowledge and user control, suggesting its effectiveness for weight management.
Area of Science:
- Obesity research
- Behavioral science
- Digital health interventions
Background:
- Rising obesity rates necessitate novel weight-loss strategies.
- Podcasting is a growing medium with under-explored potential for health promotion.
- This study investigates the efficacy of a theory-based podcast for weight loss.
Purpose of the Study:
- To evaluate the effectiveness of a weight-loss podcast based on Social Cognitive Theory (SCT).
- To compare weight loss outcomes between an enhanced podcast and a control podcast.
- To assess changes in weight-loss knowledge, user control, and cognitive load.
Main Methods:
- A 12-week randomized controlled trial (RCT) involving 78 overweight adults (BMI 25-40 kg/m²).
- Participants were assigned to either a control podcast or an SCT-based enhanced podcast.
- Weight, BMI, and SCT constructs were measured at baseline and 12 weeks.
Main Results:
- The enhanced podcast group showed significantly greater reductions in weight (p<0.001) and BMI (p<0.001) compared to the control group.
- Participants in the enhanced podcast group demonstrated increased weight-loss knowledge (p<0.05), elaboration (p<0.001), and user control (p<0.001).
- The enhanced podcast also resulted in a lower cognitive load (p<0.001) for users.
Conclusions:
- Behavioral, theory-based podcasting shows promise as an effective tool for weight loss.
- The SCT-based enhanced podcast intervention was more effective than the control podcast.
- Podcasting offers a viable platform for delivering weight management interventions.
Related Concept Videos
01:24Obesity
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
01:21Drug Dosing: Obese Patients
In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
01:19Energy Balance
The human body gets energy from the three macronutrients: carbohydrates, proteins, and fats. Energy is released when the chemical bonds in the organic compounds present in the food are broken down. The energy content of food is measured in kilocalories (kcal), defined as the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. This value is determined by measuring the temperature change of the water surrounding a calorimeter after the complete...
01:23Binge Eating Disorders
Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
01:52Regression Toward the Mean
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...