Author : Ada Huang
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (111 download)
Book Synopsis Changes in Body Composition, Energy Metabolism and Muscle Function Following a Very Low Calorie Diet and Bariatric Surgery by : Ada Huang
Download or read book Changes in Body Composition, Energy Metabolism and Muscle Function Following a Very Low Calorie Diet and Bariatric Surgery written by Ada Huang and published by . This book was released on 2019 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background and aim: Bariatric surgery is an effective intervention for the management of obesity. Bariatric patients are often required to go on a Very Low Calorie Diet (VLCD) before surgery. There is limited research regarding the effect of VLCD and bariatric surgery on changes in body composition, energy metabolism, and functional changes. The aims of this thesis were to investigate, in a cohort of women undergoing bariatric surgery, the body composition, energy metabolism and muscle function changes that occur (1) during a period of VLCD prior to surgery, and (2) over the six month period following surgery. Methods: This thesis analysed the data of participants who underwent the Optifast VLCD (600- 800kcal/d) and bariatric surgery. Data were collected prior to commencement of the VLCD, a day before surgery, and six months after surgery. Body composition was measured using anthropometry, dual-energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA), and whole body counting. Muscle function was measured through the handgrip test. Energy metabolism was measured using indirect calorimetry. Outcome measures included body weight, fat mass (FM), fat-free mass (FFM), waist circumference (WC), waist-to-hip ratio (WHR), trunk fat:limb fat ratio (TLFR), mid-arm muscle area (MAMA), total muscle mass by anthropometry, appendicular skeletal muscle mass (ASMM), total body potassium (TBK), bone mineral density (BMD), phase angle (PhA), impedance ratio (IR), handgrip strength and resting energy expenditure (REE). Results: Twenty-six participants were included in pre/post-VLCD analysis. Participants underwent the Optifast VLCD for 32±8 days and showed a significant reduction in body weight (p