Comparison of weight loss and body composition changes in morbidly obese Taiwanese patients with different bariatric surgeries: a 1-year follow-up study.
BACKGROUND
This study investigated the impacts of two different bariatric surgeries on the body composition of morbidly obese patients in Taiwan. Also, the differences in body composition changes between genders were compared.


METHODS
In total, 198 patients who underwent bariatric surgery were included, with 130 receiving a sleeve gastrectomy (SG) and 68 receiving adjusted gastric banding (AGB). The weight and body composition were measured by bioelectrical impedance. Follow-up examinations were performed at subsequent visits after surgery and at 1 year. Only 81 SG and 40 AGB patients continued follow-up for the entire 12 months.


RESULTS
All patients experienced significant weight loss beginning from 3 months after surgery. Compared to patients with AGB, SG patients had a greater extent of body mass index (BMI) loss, whereas a greater muscle weight percentage increase was found compared to AGB patients. Female patients had a higher body fat mass and lower muscle weight percentage and BMI than did males. There were no differences in changes in BMI, or percentages of body fat and muscle mass between male and female patients for 12 months after surgery. However, the waist/hip ratio (WHR) decrement and percentage of excess weight loss (ExWL%) were significantly greater in female than male patients with both bariatric surgeries.


CONCLUSIONS
These findings suggest that although females had greater extents of WHR decrement and ExWL% than male patients with both surgical procedures, patients who received SG had higher BMI changes and body fat losses than SGB patients regardless of differences in the gender distribution.
School of Nutrition and Health Sciences, College of Public Health and Nutrition, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 110, Taiwan.
I-Chi
IC
Cheng
Shu-Chen
SC
Wei
Sung-Ling
SL
Yeh
Weu
W
Wang
D000273:Adipose Tissue / Q000601:surgery; D000328:Adult; D044466:Asian People; D001823:Body Composition; D015992:Body Mass Index; D017097:Electric Impedance; D005260:Female; D005500:Follow-Up Studies; D005743:Gastrectomy / Q000379:methods; D015391:Gastroplasty; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D018482:Muscle, Skeletal / Q000473:pathology; D009767:Obesity, Morbid / Q000503:physiopathology* / Q000601:surgery; D009929:Organ Size; D013624:Taiwan; D015430:Weight Gain; D015431:Weight Loss; D055815:Young Adult