Table 2. Comparison of nutritional and food intake variables at three time-points: pre-dialysis (P1), at start of dialysis (P2), and 30 days after dialysis (P3).
| Anthropometric and intake variables | P1 (n = 35) |
P2 (n = 35) |
P3 (n = 35) |
p |
|---|---|---|---|---|
| Body weight (Kg) | 71.7 ± 17.0 | 69.8 ± 16.4 | 68.5 ± 15.6 | 0.72 |
| BMI (Kg/m2) | 28.1 ± 5.7 | 27.3 ± 5.5 | 26.8 ± 5.3 | 0.64 |
| MAC (cm) | 31.0 ± 4.9 | 29.6 ± 5.1 | 28.4 ± 5.1 | 0.11 |
| TSF (mm) | 19.1 ± 9.0 | 18.0 ± 8.9 | 16.5 ± 7.6 | 0.43 |
| MAMC (cm) | 30.4 ± 4.7a | 29.0 ± 4.9b | 25.4 ± 5.6 | 0.00 |
| HGS (Kg) | 17.2 ± 8.6 | 15.9 ± 7.6 | 16.5 ± 7.5 | 0.81 |
| Phase angle (º) | 6.1 ± 0.9 | 6.0 ± 1.2 | 6.1 ± 1.2 | 0.89 |
| Body cell mass (kg) | 22.5 ± 6.4 | 21.0 ± 5.4 | 20.8 ± 5.9 | 0.47 |
| Extracellular mass (kg) | 27.1 ± 6.9 | 26.1 ± 5.8 | 25.0 ± 5.3 | 0.38 |
| Intracellular water (L) | 19.3 ± 5.3 | 18.1 ± 4.8 | 17.8 ± 4.8 | 0.47 |
| Extracellular water (L) | 18.1 ± 4.9 | 16.8 ± 4.0 | 16.2 ± 3.7 | 0.21 |
| Hydration state (L) | 1.1 ± 4.6 | 0.4 ± 3.1 | 0.2 ± 2.7 | 0.57 |
| PNA (g/day) | 41.9 ± 16.3 | 35.5 ± 14.1 | 34.1 ± 17.4 | 0.26 |
| nPNA (g/kg/day) | 0.5 ± 0.2 | 0.5 ± 0.2b | 0.6 ± 0.2 | 0.04 |
| Calories (Kcal) | 1214.0 ± 547.3 | 1294.7 ± 366.8 | - | 0.29 |
| Calories (Kcal/kg) | 17.4 ± 8.7 | 20.7 ± 6.9 | - | 0.00 |
| Proteins (g) | 50.4 ± 21.0 | 51.2 ± 21.4 | - | 0.81 |
| Proteins (g/kg) | 0.71 ± 0.31 | 0.8 ± 0.4 | - | 0.07 |
BMI: body mass index; MAC: midarm circumference; TSF: triciptal skinfold; MAMC: midarm muscle circumference; HGS: handgrip strength; PNA: protein equivalent of nitrogen appearance; nPNA: normalized PNA.
Statistical analysis:
a
= A1 different from A3.
b
= A2 different than A3.