Energy balance
Laparoscopic Roux-en-Y Gastric Bypass (LGBP) produces superior body composition outcomes compared to Laparoscopic Vertical Banded Gastroplasty (LVBG), specifically through greater reductions in total body fat, trunkal fat, and visceral adipose tissue, while better preserving lean tissue mass in men.
For patients undergoing bariatric surgery, Roux-en-Y Gastric Bypass (LGBP) is superior to Vertical Banded Gastroplasty (LVBG) for reducing body fat, particularly visceral fat, while better preserving muscle mass in men. A key mechanism for this success is a natural behavioral shift where patients avoid fatty foods due to post-prandial discomfort, which aids in sustained weight loss.
LGBP patients demonstrated better outcomes compared with LVBG patients in terms of body composition... DEXA demonstrated a larger reduction of body fat in all compartments after LGBP, especially at the trunk... CT demonstrated more reduction of the visceral fat... Lean tissue mass (LTM) was proportionally less reduced, especially in men, after LGBP.
Why this rating
Randomized clinical trial with high follow-up rate (97.6%) and objective measurements (DEXA, CT).
Source
Body Composition, Dietary Intake, and Energy Expenditure After Laparoscopic Roux-en-Y Gastric Bypass and Laparoscopic Vertical Banded Gastroplasty
Torsten Olbers et al. · Annals of Surgery · 2006
DOI 10.1097/01.sla.0000218085.25902.f8
More from this paper
- Laparoscopic Roux-en-Y Gastric Bypass (LGBP) induces a significant dietary shift towards lower fat intake and higher carbohydrate intake compared to Laparoscopic Vertical Banded Gastroplasty (LVBG), with approximately 30% of LGBP patients consciously avoiding fatty foods.Strong
- Postoperative Basic Metabolic Rate (BMR) decreases in proportion to weight loss after bariatric surgery, with no difference in BMR reduction between LGBP and LVBG, refuting the theory of postoperative hypermetabolism.Strong
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