Table 1.
Anthropometric and energetic data at baseline and 6 months post bariatric surgery
| Baseline | 6 months post-surgery | P | |||
|---|---|---|---|---|---|
|
| |||||
| Mean | SD | Mean | SD | ||
| Age (22 women: 3 men) years | 44.5 | ± 10.6 | |||
| Body Mass Index (Kg/m2) | 47.4 | ± 6.1 | 36.5 | ± 5.1 | <0.001 |
| Weight (kg) | 130.5 | ± 20.4 | 99.8 | ± 16.1 | <0.0001 |
| Body fat (%) | 47.9 | ± 5.6 | 39.6 | ± 6.3 | <0.001 |
| Body fat (kg) | 63.0 | ± 15.3 | 40.0 | ± 10.9 | <0.001 |
| Fat free mass (kg) | 67.4 | ± 9.3 | 59.8 | ± 8.9 | <0.001 |
| Total body water (kg) | 44.4 | ± 6.4 | 40.1 | ± 6.0 | <0.001 |
| RMR (kcal/day) | 1730 | ± 278 | 1430 | ± 200 | <0.0001 |
| RMR Residual (kcal/day) | 0 | ± 186 | 131 | ± 163 | = 0.002 |
| TDEE (kcal/day) | 2879 | ± 544 | 2369 | ± 304 | <0.001 |
| TDEE Residual (kcal/day) | 0 | ± 420 | 227 | ± 339 | =0.008 |
Anthropometric and energetic data for 25 subjects (22 women, 3 men) at baseline and 6 months after bariatric surgery. Body composition was determined using dual-X-ray absorptiometry (DXA), and total body water was derived from deuterium dilution. RMR, basal metabolic rate; FFM, fat-free mass; TDEE, total daily energy expenditure. RMR was determined by indirect calorimeters and TDEE using doubly labeled water. Data are shown as mean ± standard deviation (SD). P values are for paired analyses. Residuals were calculated by predicting RMR and TDEE based upon the respective baseline relationships with FFM before surgery. The residuals were calculated as Predicted – Actual. The equation that described the baseline relationship between FFM and RMR was: RMR = 22.1 * FFM + 243 (R2 = 0.55, P<0.001). The equation that described the baseline relationship between FFM and TDEE was: TDEE = 37.0 * FFM + 382 (R2 = 0.40, P<0.001).