Table 2. The 6RM improvements in the chest-press exercises.
| Training group | Exercise | Pre-test (kg) | Post-test (kg) | Improvement (%) | p-values |
|---|---|---|---|---|---|
| Smith machine | Smith machine | 68.8 ± 8.7 | 84.0 ± 8.8 | 22.7 ± 8.3 | < 0.01 |
| Barbell bench press | 71.0 ± 9.5 | 82.3 ± 7.0 | 17.0 ± 11.3 | < 0.01 | |
| Swiss ball | Swiss ball | 73.1 ± 18.1 | 95.6 ± 20.9 | 32.5 ± 15.8 | < 0.01 |
| Barbell bench press | 78.3 ± 20.3 | 86.3 ± 18.3 | 11.5 ± 7.2 | < 0.01 | |
| Dumbbells | Dumbbell | 60.8 ± 9.8 | 82.7 ± 6.0 | 38.6 ± 19.5 | < 0.01 |
| Barbell bench press | 75.3 ± 10.9 | 83.7 ± 11.0 | 11.6 ± 7.0 | < 0.01 |