Table 2.

Differences in average results in pre, post and last examination of respiratory muscles parameters in the EG and CG.

	EG (n = 12)			CG (n = 8)
	Mdn (IR)	Z	d	Mdn (IR)	Z	d
PImax % pre	124.13 (52.80)	2.401*	1.451###	147.46 (48.21)	0.281	0.141
PImax % post	167.47 (64.75)	1.332	0.802##	145.13 (43.22)	1.962*	0.982###
PImax % last	157.80 (64.73)	2.583**	1.563###	171.22 (54.17)	2.103*	1.483###
PEmax % pre	99.48 (28.07)	1.691	1.021###	100.78 (30.34)	0.561	0.281#
PEmax % post	110.86 (46.96)	0.272	0.162	99.63 (37.40)	2.102*	1.052###
PEmax % last	108.13 (42.94)	1.693	1.023###	121.96 (48.30)	1.823	1.293###

PImax – maximal inspiratory mouth pressure; PEmax – maximal expiratory mouth pressure; % – percentage of predicted value; Mdn – median; IR – interquartile range; 1 difference between pre and post examination; 2 differences between post and last examination; 3 difference between pre and last examination; Z – Wilcoxon pair test; d – Cohen’s coefficient of effect size;

* p < 0.05

# small effect

## moderate effect

### large effect.