Table 1.
Patient descriptives, body weight, body composition, and resting metabolic rate before and six months after LRYGB and LAGB
| All Participants | LRYGB | LAGB | ||||
|---|---|---|---|---|---|---|
| Baseline | 6 Months | Baseline | 6 Months | Baseline | 6 Months | |
| N (females) | 13 (10) | -- | 8 (6) | -- | 5 (4) | -- |
| Age (y) | 46.2 (12.7) | -- | 46.6 (10.2) | -- | 45.4 (17.3) | -- |
| BMI (kg/m2) | 46.4 (5.8) | 36.8 (6.1) a | 47.1 (6.8) | 34.1 (5.6) a | 45.3 (4.2) | 41.2 (4.3) a b |
| Body weight (kg) | 128.5 (14.6) | 101.9 (15.5) a | 131.7 (15.9) | 95.4 (13.1) a | 123.5 (11.9) | 112.4 (14.1) a b |
| Lean body mass (kg) | 69.9 (12.1) | 61.0 (11.8) a | 71.8 (14.1) | 60.2 (13.3) a | 66.9 (8.6) | 62.4 (10.1) a b |
| Fat mass (kg) | 58.6 (8.9) | 40.9 (11.6) a | 59.9 (9.7) | 35.2 (9.6) a | 56.6 (7.9) | 50.0 (8.3) a b |
| Body fat percentage (%) | 46.6 (5.5) | 40.1 (8.1) a | 46.5 (6.0) | 37.6 (8.9) a | 46.7 (5.1) | 44.1 (5.2) b |
| RMR (kcal/d) | 1982 (222) | 1767 (240) a | 2029 (26.1) | 1759 (287) a | 1907 (13.2) | 1779 (170) |
| RMRpredicted (kcal/d) | 1982 (196) | 1792 (181) a | 2009 (217) | 1755 (193) a | 1938 (172) | 1851 (161) a, b |
| RMRmeasured-predicted | 0 (104) | −25 (114) | 19 (99) | 4 (128) | −31 (116) | −73 (75) |
LRYGB, laparoscopic Roux-en-Y gastric bypass; LAGB, laparoscopic adjustable gastric banding; BMI, body mass index; RMR, resting metabolic rate; RMRpredicted, resting metabolic rate predicted from the equation: RMR (kcal/d) = 1006.775 + 13.614*LBM + 3.888*FM – 5.490*age – 27.569*sex; RMRmeasured-predicted, difference between measured and predicted RMR at each time point
a
significantly different from before surgery
b
change from before surgery was significantly different from LRYGB