DESIGN: Randomised clinical trial.~SETTING: Primary Health Care centres (PHCCs) in Catalonia, Spain.~PARTICIPANTS: Adults aged 18 to 40 years with criteria of obesity or overweight, consulting PHCCs for any reason and who provide written informed consent to participate in the trial.~INTERVENTION GROUP will receive a 12-month weight loss programme that implements recommendations of a Clinical Practice Guideline, complemented with a smartphone app designed specifically for this programme.~CONTROL GROUP will receive the usual care. The outcome measure will be weight loss at 12 months.~EXPECTED RESULTS: The investigators expect a higher weight loss in the intervention group than in control group.
AIM: To assess the efficacy of an intervention that includes the assistance of a weight loss smartphone application targeted to young people aged 18 to 40 years.~DESIGN: Randomisedclinical trial.~SETTING: Primary Health Care centres (PHCCs) in Catalonia.~PARTICIPANTS: Adults aged 18 to 40 years with criteria of obesity or overweight, consulting PHCCs for any reason and who provide written informed consent to participate in the trial.~INTERVENTION GROUP will receive a 12-month weight loss programme that implements recommendations of a Clinical Practice Guideline, complemented with a smartphone app designed specifically for this programme.~CONTROL GROUP will receive the usual care. The outcome measure will be weight loss at 12 months.~EXPECTED RESULTS: The investigators expect a higher weight loss in the intervention group than in control group.