Obesity is a prevalent multifactorial disease worldwide that has become a major public health concern. Excess adiposity poses a health risk because it is related to several chronic diseases, which impact the person’s quality of life and present a greater risk of mortality. This study presents a protocol to evaluate the effectiveness of the Energy2MOB programme (Improvement of Obesity) in reducing body weight (between 5%–10%) in adults with obesity with a multicomponent group intervention of food education and physical activity.

Randomised clinical trial with two groups (control and intervention) of 1 year, which includes people from the Berguedà health region between 18 and 65 years old with grade II overweight (body mass index (BMI) between 27–30 kg/m²) or obesity (BMI between 30–40 kg/m²). Accepting an alpha risk of 0.05 and a statistical power >0.8 in a bilateral contrast, 68 subjects in each group are needed to detect a difference equal to or >2.5 kg.

The protocol was approved by the Ethics Committee of the University Institute for Research in Primary Care (IDIAP Jordi Gol) with the CEIm code: 24/303-P. The IDIAPJGol CEIm complies with the standards of Good Clinical Practice and with the current legislation that regulates its operation. The protocol complies with the ethical principles of the Declaration of Helsinki and applicable data protection regulations. All participants will provide written informed consent before participating. The dissemination plan includes presenting the results at national and international scientific conferences, publication in peer-reviewed journals, and sharing a plain-language summary with all participants through their primary care centres. Key findings will also be shared with local health authorities and community health professionals to inform future interventions on obesity prevention and management.

NCT06988904.