Body composition and cardiorespiratory fitness in women with Bulimia Nervosa and Binge Eating Disorder
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Objectives: The aim of this thesis on bulimia nervosa (BN) and binge eating disorder (BED) is 1) to examine if the effect of physical exercise and dietary therapy (PED-t) on body composition (BC) and cardiorespiratory fitness (CRF) differ between BN and BED, and 2) to examine if PED-t is superior to cognitive behavioral therapy (CBT) in terms of its effectiveness on these variables. Method: Data in this study was collected from an ongoing treatment study on women with a diagnosis of BN or BED based on the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM -5), aged between 18 and 40 years with a BMI ranging from 17.5 to 35 kg/m2. Participants were recruited from the general population, screened for inclusion, and randomized to either PED-t or CBT. The sample in this study includes 81 women, 57 with BN and 24 with BED, that have conducted pre and post test of Dual-energy x-ray absorptiometry (DXA) and/or a Cardiopulmonal exercise test (CPET) between 2013 and spring 2016. Effect on BC and CRF is determined using variables for weight, BMI, fat mass (% and kg), lean mass and VO2max (l·min-1 and ml·kg-1·min-1). Results: PED-t increased weight (2kg, p=.002), BMI (0.7kg/m2, p=.003) and lean mass (1.7kg, p=<.000) in BN from pre to post treatment, and decreased fat mass (-1.8kg, p=.006; -1.9%, p=.001), and increased lean mass (1.1kg, p=.005) in BED from pre to post treatment. Compared to CBT, PED-t have a superior effect on weight (+2.8kg, p=.004) and BMI (+1kg/m2, p=.004) in women with BN, as well as lean mass (+1.2kg, p=.046) in women with BED.
Masteroppgave - Norges idrettshøgskole, 2017