| Spt | 2/2 | 4/4 |
---|
Syn (s) | 19.79 ± 3.59 | 84.43 ± 10.77*** | 60.85 ± 14.39** |
RSA (ms) | 76.84 ± 6.91 | 56.10 ± 6.38** | 137.97 ± 11.71***### |
BR (min) | 14.82 ± 0.62 | 18.73 ± 0.59*** | 9.51 ± 0.25***### |
- Data are presented as the mean ± SEM
- Spt, spontaneous breathing; 2/2, 2/2 breathing pattern; 4/4, 4/4 breathing pattern; Syn, synchronization time; RSA, HR Max minus HR Min; BR, breath rate
- ** and *** p < 0.01 and p < 0.001, respectively, vs the spontaneous breathing pattern (paired t test). ### p < 0.001, respectively, for a comparison of the = 4/4 breathing pattern and the 2/2 breathing pattern