Kerstin Bauer1, Teresa Lau1, Juliane Schwille-Kiuntke1,2, Sandra Schild1, Hans Hauner3, Andreas Stengel1,4, Stephan Zipfel1, Isabelle Mack1. 1. Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Tübingen, Germany. 2. Institute of Occupational and Social Medicine and Health Services Research, University of Tübingen, Tübingen, Germany. 3. Institute of Nutritional Medicine, School of Medicine, Technical university of Munich, Munich, Germany. 4. Charité Center for Internal Medicine and Dermatology, Department for Psychosomatic Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
Abstract
OBJECTIVE: The recommendation for conventional body weight loss (BWL) treatment in obesity is 5-10%. It is not clear whether BWL is similar across the three different body mass index (BMI) obesity classes. The aim was to provide an overview on BWL across these classes in moderate lifestyle/diet intervention programs. METHOD: A systematic literature search was conducted and the evidence of randomized controlled trials (RCTs) and pre-post design studies synthesized. The outcome was BWL. RESULTS: For RCTs, mean BWL in the intervention group was 3.6 kg (class I) and 5.3 kg (class II), which equates to 4 and 5% BWL, respectively. None of the assessed class III obesity studies met the inclusion criteria. For pre-post design studies, mean BWL was 5.4 kg (class I), 5.5 kg (class II) and 7.9 kg (class III), with high variation within and across studies in the latter. This equates to 6, 5 and, 6% BWL, respectively. CONCLUSIONS: BWL of moderate BWL programs are similar across the different obesity classes. For class I obesity, the results differ between RCT and pre-post design studies by 2% BWL. The high variation of BWL in class III obesity might reflect different states of motivation such as the attitude towards bariatric surgery.
OBJECTIVE: The recommendation for conventional body weight loss (BWL) treatment in obesity is 5-10%. It is not clear whether BWL is similar across the three different body mass index (BMI) obesity classes. The aim was to provide an overview on BWL across these classes in moderate lifestyle/diet intervention programs. METHOD: A systematic literature search was conducted and the evidence of randomized controlled trials (RCTs) and pre-post design studies synthesized. The outcome was BWL. RESULTS: For RCTs, mean BWL in the intervention group was 3.6 kg (class I) and 5.3 kg (class II), which equates to 4 and 5% BWL, respectively. None of the assessed class III obesity studies met the inclusion criteria. For pre-post design studies, mean BWL was 5.4 kg (class I), 5.5 kg (class II) and 7.9 kg (class III), with high variation within and across studies in the latter. This equates to 6, 5 and, 6% BWL, respectively. CONCLUSIONS: BWL of moderate BWL programs are similar across the different obesity classes. For class I obesity, the results differ between RCT and pre-post design studies by 2% BWL. The high variation of BWL in class III obesity might reflect different states of motivation such as the attitude towards bariatric surgery.
Authors: Kerstin Bauer; Sandra Schild; Helene Sauer; Martin Teufel; Andreas Stengel; Katrin Elisabeth Giel; Philipp Schellhorn; Florian Junne; Andreas Nieß; Stephan Zipfel; Isabelle Mack Journal: Obes Facts Date: 2021-09-14 Impact factor: 3.942