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Dynamic Relations Between Sedentary Behavior, Physical Activity, and Body Composition After Bariatric Surgery
Authors:Camille Vatier  Corneliu Henegar  Cécile Ciangura  Christine Poitou-Bernert  Jean-Luc Bouillot  Arnaud Basdevant  Jean-Michel Oppert
Affiliation:Service de Nutrition, Groupe Hospitalier Pitié-Salpêtrière (AP-HP), Université Pierre et Marie Curie-Paris6, 83, boulevard de l'H?pital, 75013 Paris, France.
Abstract:

Background

Physical activity has been shown to increase following obesity surgery; however, changes in sedentary behavior in this setting are not known. Our aim was to describe changes in both physical activity and sedentary behavior of obese patients after gastric bypass (GBP) and their relationships with changes in body composition.

Methods

Physical activity, time spent watching TV as typical sedentary behavior (self-report), and body composition (DXA) were assessed before and 6 and 12?months after GBP in 86 obese patients (67 women, 24?C66?years old, BMI 41.3?C53.5?kg/m2).

Results

One year after GBP (mean loss of weight ?37.1?kg, fat mass ?25.7?kg, lean body mass ?9.4?kg), leisure-time physical activity (LTPA) significantly increased from 2.0 (SD 3.7) to 3.8 (5.4) h/week and from 7.2 (12.5) to 14.1 (20.1) MET-h/week (MET: metabolic equivalent task), the number of LTPA performed increased from 1.3 (1.3) to 1.8 (1.4), and TV time decreased from 3.0 (1.6) to 2.4 (1.4) h/day (all p?Conclusions Together with increased LTPA, this study shows a decrease in sedentary behavior after GBP, which appears related to favorable changes in body composition. These observations are important to design future intervention studies, including physical activity and sedentary occupations aiming to optimize the care of patients after bariatric surgery.
Keywords:
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