Table 1 Training protocol
Week | First training day | Second training day | Third training day |
|---|---|---|---|
1 | 30 s × 2 | 30 s × 3 | 30 s × 4 |
2 | 1 min × 1 | 1 min ×2 | 1 min × 3 |
3–5 | 1 min × 4 | 1 min × 4 | 1 min × 4 |
6–7 | 1 min × 5 | 1 min × 5 | 1 min × 5 |
8 to the end of study | 1 min × 6 | 1 min × 6 | 1 min × 6 |