Table 3.
Composite Organ-Tissue Composition and Resting Energy Expenditure (REE) of Obesity Tissue.
| Composition† | REE§ | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| BMI (kg/m2) | Δ | %Δ | BMI (kg/m2) | Δ | %Δ | |||||
| <25 | 25-29.9 | >29.9 | <25 | 25-29.9 | >29.9 | |||||
| Men | ||||||||||
| AT | 14.5 | 22.2 | 30.6 | 16.0 | 48.0 | 65.3 | 99.8 | 138 | 72.2 | 15.7 |
| Skin | 3.88 | 4.31 | 4.62 | 0.75 | 2.23 | 27.9 | 31.0 | 33.3 | 5.37 | 1.17 |
| SM | 27.4 | 31.6 | 36.9 | 9.53 | 28.5 | 356 | 411 | 480 | 124 | 27.0 |
| Bone | 4.72 | 5.01 | 5.10 | 0.38 | 1.14 | 10.8 | 11.5 | 11.7 | 0.88 | 0.19 |
| Heart | 0.33 | 0.37 | 0.33 | 0.002 | 0.01 | 144 | 162 | 145 | 0.89 | 0.19 |
| Liver | 1.46 | 1.82 | 2.05 | 0.59 | 1.77 | 293 | 365 | 411 | 118 | 25.7 |
| Kidneys | 0.28 | 0.35 | 0.35 | 0.06 | 0.19 | 125 | 152 | 153 | 27.4 | 5.97 |
| Spleen | 0.23 | 0.33 | 0.37 | 0.14 | 0.41 | 23.1 | 33.4 | 36.7 | 13.5 | 2.95 |
| Brain | 1.57 | 1.60 | 1.69 | 0.11 | 0.34 | 378 | 385 | 405 | 27.5 | 5.98 |
| Residual | 17.0 | 20.7 | 22.8 | 5.81 | 17.4 | 204 | 248 | 274 | 69.8 | 15.2 |
| Total | 71.4 | 88.3 | 105 | 33.4 | 1,627 | 1,898 | 2,086 | 459 | ||
| Women | ||||||||||
| AT | 19.1 | 27.7 | 44.7 | 25.5 | 66.9 | 86.0 | 125 | 201 | 115 | 26.9 |
| Skin | 3.55 | 3.89 | 4.38 | 0.83 | 2.18 | 25.6 | 28.0 | 31.6 | 5.98 | 1.40 |
| SM | 19.4 | 21.7 | 24.7 | 5.38 | 14.1 | 252 | 282 | 322 | 69.9 | 16.4 |
| Bone | 3.91 | 3.97 | 4.35 | 0.45 | 1.18 | 8.98 | 9.13 | 10.0 | 1.03 | 0.24 |
| Heart | 0.25 | 0.29 | 0.32 | 0.06 | 0.17 | 112 | 126 | 140 | 27.9 | 6.53 |
| Liver | 1.34 | 1.50 | 1.77 | 0.43 | 1.12 | 269 | 300 | 354 | 85.7 | 20.1 |
| Kidneys | 0.24 | 0.26 | 0.34 | 0.10 | 0.26 | 104 | 114 | 148 | 43.7 | 10.2 |
| Spleen | 0.18 | 0.21 | 0.29 | 0.10 | 0.27 | 18.3 | 21.5 | 28.6 | 10.3 | 2.41 |
| Brain | 1.44 | 1.43 | 1.46 | 0.02 | 0.05 | 345 | 343 | 349 | 4.88 | 1.14 |
| Residual | 13.8 | 16.2 | 19.0 | 5.24 | 13.7 | 165 | 195 | 228 | 62.9 | 14.7 |
| Total | 63.2 | 77.2 | 101 | 38.1 | 1,385 | 1,543 | 1,812 | 427 | ||
Results are expressed as group mean values; corresponding mean values ±SE are shown in Figure 1 along with between-group statistical comparisons.
†
Component composition units are in kg.
§
Component units in kcal/d. Δs are the differences between the groups who were obese and normal weight that constitute obesity tissue; %Δ is the percentage of total mass or REE difference. AT, adipose tissue; BMI, body mass index; SM, skeletal muscle