Table 4.

Comparison of 6MWD between the two groups (x̅ ± s, m)

Group	Before intervention	After intervention
Group A (n=57)	298.63±2.56	352.12±6.28#
Group B (n=58)	298.59±2.62	458.96±3.63#,*
t	0.083	111.933
P	0.934	0.000

^#indicates P<0.05 compared with before intervention;

^*indicates P<0.05 compared with group A.