Table 3.

Impact of the intervention on aerobic capacity

6-MWD	Intervention Group (n = 57)	Control Group (n = 58)	P value
Preoperative, Median (Q1-Q3), m	374 [320.5, 417]	337 [296, 378]	0.044*
Difference from baseline ≥ 20 m, No. (%) a	27 (47.4)	16 (27.6)	0.028*
Postoperative (4 weeks), Median (Q1-Q3), m	348.5 [311, 405]	327 [295, 362]	0.274
Recovered at 4 weeks postoperatively, No. (%) b	34 (63.2)	25 (43.1)	0.031*

Abbreviation: 6-MWD 6-minute walking distance, Q1 first quartile, Q3 third quartile

^aImprovement of 6MWD of 20 m or more compared with baseline

^bRecovered to 6MWD within 20 m of the baseline value or above