Irmelin Bergh1, Ingela Lundin Kvalem2, Hilde Risstad3, Falko F Sniehotta4. 1. Department of Psychology, University of Oslo, Oslo, Norway. Electronic address: Irmelin.bergh@psykologi.uio.no. 2. Department of Psychology, University of Oslo, Oslo, Norway. 3. Department of Morbid Obesity and Bariatric Surgery, Oslo University Hospital, Oslo, Norway. 4. Institute of Health & Society, Newcastle University, Newcastle upon Tyne, UK.
Abstract
BACKGROUND: Weight loss and weight loss maintenance vary considerably between patients after bariatric surgery. Postoperative weight gain has partially been explained by lack of adherence to postoperative dietary and physical activity recommendations. However, little is known about factors related to postoperative adherence. OBJECTIVES: The aim of this study was to examine psychological, behavioral, and demographic predictors of adherence to behavior recommendations and weight loss 1 year after bariatric surgery. SETTING: Oslo University Hospital. METHODS: In a prospective cohort study, 230 patients who underwent Roux-en-Y gastric bypass were recruited from Oslo University hospital from 2011 to 2013. They completed a comprehensive questionnaire before and 1 year after surgery. Weight was measured preoperatively, on the day of surgery, and 1-year postoperatively. RESULTS: Mean body mass index was 44.9 kg/m(2) (standard deviation [SD] = 6.0) preoperatively and 30.6 kg/m(2) (SD = 5.2) 1 year after surgery. Patients lost on average 29.2 % (SD = 8.2) of their initial weight. Predictors of dietary adherence were years with dieting experience, readiness to limit food intake, and night eating tendency. Preoperative physical activity and planning predicted postoperative physical activity whereas predictors of weight loss were higher frequency of snacking preoperatively, greater past weight loss, and lower age. CONCLUSION: Several preoperative psychological predictors were related to postoperative adherence to dietary and physical activity recommendations but were not associated with weight loss. Interventions targeting psychological factors facilitating behavior change during the initial postoperative phase are recommended as this might improve long-term outcomes.
BACKGROUND: Weight loss and weight loss maintenance vary considerably between patients after bariatric surgery. Postoperative weight gain has partially been explained by lack of adherence to postoperative dietary and physical activity recommendations. However, little is known about factors related to postoperative adherence. OBJECTIVES: The aim of this study was to examine psychological, behavioral, and demographic predictors of adherence to behavior recommendations and weight loss 1 year after bariatric surgery. SETTING: Oslo University Hospital. METHODS: In a prospective cohort study, 230 patients who underwent Roux-en-Y gastric bypass were recruited from Oslo University hospital from 2011 to 2013. They completed a comprehensive questionnaire before and 1 year after surgery. Weight was measured preoperatively, on the day of surgery, and 1-year postoperatively. RESULTS: Mean body mass index was 44.9 kg/m(2) (standard deviation [SD] = 6.0) preoperatively and 30.6 kg/m(2) (SD = 5.2) 1 year after surgery. Patients lost on average 29.2 % (SD = 8.2) of their initial weight. Predictors of dietary adherence were years with dieting experience, readiness to limit food intake, and night eating tendency. Preoperative physical activity and planning predicted postoperative physical activity whereas predictors of weight loss were higher frequency of snacking preoperatively, greater past weight loss, and lower age. CONCLUSION: Several preoperative psychological predictors were related to postoperative adherence to dietary and physical activity recommendations but were not associated with weight loss. Interventions targeting psychological factors facilitating behavior change during the initial postoperative phase are recommended as this might improve long-term outcomes.
Authors: Hana F Zickgraf; Emily Stefano; Julia Price; Susan Veldheer; Ann Rogers; Andrea Rigby Journal: Surg Obes Relat Dis Date: 2019-05-20 Impact factor: 4.734