Table 3.
Body weight, body composition and thermogenic changes in the RYGB and AGB groups at 6 months (Visit 3).
| RYGB (n=14) |
AGB (n=7) |
p value | |
|---|---|---|---|
| Weight (kg), V1 | 134.2±19.5 | 119.8±11.6 | |
| Weight (kg), V3 | 98.5±15.9 | 107.3±14.5 | |
| Weight (kg) V1–3 | −35.7±5.2 | −12.5±6.3 | <0.01 |
| p value | <0.01 | <0.01 | |
| %EWL V1–3 | 48.7±10.0 | 20.5±11.4 | <0.01 |
| Fat* (kg), V1 | 60.2±8.3 | 56.1±7.2 | |
| Fat* (kg), V3 | 36.4±8.3 | 49.0±7.9 | |
| ΔFat (kg) V1–3 | −23.9±4.6 | −7.2±3.6 | <0.01 |
| p value | <0.01 | 0.01 | |
| % Fat*, V1 | 48.3±5.9 | 47.2±4.7 | |
| % Fat*, V3 | 39.6±8.1 | 44.3±4.7 | |
| Δ% Fat V1–3* | 8.67±3.18 | −2.90±2.31 | <0.01 |
| p value | <0.01 | 0.03 | |
| LBM* (kg), V1 | 62.4±12.7 | 60.2±8.4 | |
| LBM* (kg), V3 | 53.1±11.4 | 56.2±8.8 | |
| ΔLBM(kg) V1–3 | −9.2±2.9 | −4.0±3.0 | 0.01 |
| p value | <0.01 | 0.02 | |
| % LBM*, V1 | 49.5±5.7 | 50.5±4.4 | |
| % LBM*, V3 | 57.4±7.8 | 52.1±4.5 | |
| Δ% LBM V1–3* | 7.95±3.02 | 1.58±1.54 | <0.01 |
| p value | <0.01 | 0.05 | |
| REE, V1 | 2096±298 | 1840±202 | |
| REE, V3 | 1777±270 | 1684±278 | |
| ΔREE V1–3 | −318±149 | −157±145 | 0.05 |
| p value | <0.01 | 0.05 | |
| Wt-REE, V1 | 15.0±1.0 | 15.2±1.4 | |
| Wt-REE, V3 | 17.6±1.8 | 15.4±1.4 | |
| ΔWt-REE V1–3 | 2.58±1.51 | 0.20±0.70 | <0.01 |
| p value | <0.01 | 0.52 | |
| LBM-REE, V1 | 30.9±2.6 | 31.3±4.8 | |
| LBM-REE, V3 | 32.1±4.0 | 31.3±3.7 | |
| ΔLBM-REE V1–3 | 1.14±2.56 | 0.05±1.59 | 0.37 |
| p value | 0.25 | 0.95 |
RYGB = Roux-en-Y gastric bypass; AGB = adjustable gastric banding; %EWL = percent excess weight loss; LBM = lean body mass; V1 = Visit 1 (baseline); V3 = Visit 3 (6 months); REE = resting energy expenditure, kcal/d; Wt-REE = weight-adjusted REE, kcal/kg/d; LBM-REE = LBM adjusted REE, kcal/kg/d;
*
fat and LBM by DXA (dual-energy X-ray absorptiometry)