title: INDIVIDUO: Results from a patient-centered lifestyle intervention for obesity surgery candidates.
abstract: Preoperative nutritional counseling provides an opportunity to ameliorate patients' clinical condition and build-up adequate habits and perception of competence. Study aimed to evaluate: (a) the effect of INDIVIDUO on weight and metabolic control; (b) the impact of INDIVIDUO on psychosocial variables associated with successful weight-control.
  
  
  
  Two-arms randomised controlled single-site study, with six-month duration. Patients were recruited from an Obesity Treatment Unit's waiting list. For the intervention group (IG), an operating procedure manual was used, nutritionists received training/supervision regarding INDIVIDUO's procedures. Control group (CG) received health literacy-promoting intervention. Intention-to-treat and per-control analysis were used. Outcomes included weight, metabolic control variables (blood pressure, glycemia, insulinemia, triglycerides, cholesterol), measures of eating and physical activity patterns, hedonic hunger, autonomous/controlled regulation, perceived competence for diet (PCS-diet) and quality of life. Primary outcomes were weight and metabolic control. Effect size was estimated by odds ratio and Cohens'd coefficient.
  
  
  
  Overall, 94 patients participated (IG:45; CG:49) and 60 completed the study (IG:29; CG:31). Intervention patients lost an excess 9.68% body weight (%EWL), vs. 0.51% for CG. Adjusting for age and baseline BMI, allocation group remained an independent predictor of %EWL (B=8.43, 95%CI: 2.79-14.06). IG had a six-fold higher probability (OR: 6.35, 95%CI: 1.28-31.56) of having adequate/controlled fasting glycemia at final evaluation. PCS-diet at final evaluation was independently predicted by baseline PCS-diet (B=0.31, 95%CI: 0.06-0.64), variation in autonomous regulation (B=0.43, 95%CI: 0.15-0.71) and allocation group (B=0.26, 95%CI: 0.04-1.36).
  
  
  
  Results on weight and metabolic control support INDIVIDUO as a valuable clinical tool for obesity surgery candidates counseling. Additionally, intervention associated with perceived competence for weight-control behaviours and autonomous regulation.
authors: Hospital Santa Maria/Faculdade de Medicina da Universidade de Lisboa, Portugal; Instituto Superior de Ciências da Saúde Egas Moniz, Monte de Caparica, Portugal. Electronic address: jose.camolas@gmail.com.
authors: José
authors: J
authors: Camolas
authors: Instituto de Medicina Preventiva e Saúde Pública da Faculdade de Medicina da Universidade de Lisboa, Portugal; Instituto de Saúde Ambiental da Faculdade de Medicina da Universidade de Lisboa, Portugal.
authors: Osvaldo
authors: O
authors: Santos
authors: Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto, Portugal.
authors: Pedro
authors: P
authors: Moreira
authors: Hospital Santa Maria/Faculdade de Medicina da Universidade de Lisboa, Portugal.
authors: Isabel
authors: I
authors: do Carmo
mesh_terms: D000328:Adult; D050110:Bariatric Surgery; D001786:Blood Glucose / Q000378:metabolism; D001794:Blood Pressure; D015992:Body Mass Index; D001835:Body Weight; D002784:Cholesterol / Q000097:blood; D003376:Counseling; D004032:Diet; D015444:Exercise; D005260:Female; D006801:Humans; D007328:Insulin / Q000097:blood; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000601:surgery / Q000628:therapy*; D018802:Patient-Centered Care; D011300:Preoperative Care; D011788:Quality of Life; D016896:Treatment Outcome; D014280:Triglycerides / Q000097:blood
chemical_list: D001786:Blood Glucose; D007328:Insulin; D014280:Triglycerides; D002784:Cholesterol
keywords: Bariatric surgery preoperative diet; Clinical effectiveness; Patient centered care; Severe obesity