| Groups | Calorie intake (kcal·day−1) | Protein intake (g·kg−1·day−1) | Nitrogen balance | Both HR and ( ) | ||
| Weight reduction period | ||||||
| First half | Second half | First half | Second half | End | End | |
| Low protein diet | 883 | 0.9 | negative | increased | ||
| Ordinary protein diet | 2000 | 1200 | 1 | 1 | unchanged | unchanged |
| High protein diet | 2000 | 1200 | 2 | 1.5 | unchanged | unchanged |