Table 4.

Post hoc analysis for multiple comparisons of the dyspnea and breathing effort score at the end of 6MWT

	P
	No mask vs surgical	No mask vs N95	No mask vs cloth	Surgical vs N95	Surgical vs cloth	N95 vs cloth
Dyspnea score	0.69	0.22	0.009	0.30	0.004*	0.08
Breathing effort	0.068	0.002	< 0.001*	0.007*	< 0.001*	0.044

^*Bonferroni-adjusted significance level P < 0.008 indicated a significant difference between conditions (type of mask) based on Friedman test with Wilcoxon Signed Rank post hoc tests.