Table 1. Analysis of preoperative and postoperative data of 6MWT parameters
| Preoperative | Postoperative | P value | |
| Systolic blood pressure | 120 | 120 | 0.157 |
| Diastolic blood pressure | 70 | 80 | 0.031 |
| Total tour count | 11 | 12 | <0.001 |
| Heart rate before | 83.5±13.2 | 90.1±12.5 | 0.017 |
| Heart rate after | 111.2±21.5 | 105.4±17.8 | 0.169 |
| Dyspnea before | 0 | 0 | 0.002 |
| Dyspnea after | 1.5 | 0 | <0.001 |
| Fatigue before | 0 | 0 | 0.035 |
| Fatigue after | 2 | 1 | 0.003 |
| SPO2 before | 98 | 98 | 0.807 |
| SPO2 after | 98 | 98 | 0.726 |
| Total distance (meter) | 702.3±68.2 | 753.2±72.6 | <0.001 |
| ESS* | %26.7 | %23.3 | 1,000 |
*ESS: Symptom evaluation following exercise.