Table 2. Comparison of pre- and post-accessory muscles and lung capacities differences in the smokers group (n=10)

	Pre	Post	Difference	t	p
Sternocleidomastoid muscle (cm)	0.82±0.15	0.93±0.15	0.11±0.62	5.601	0.000*
Pectoralis minor muscle (cm)	0.86±0.20	1.08±0.20	0.22±0.09	7.173	0.000*
FVC (L)	4.35±0.91	4.29±0.98	0.06±0.11	1.766	0.111
FEV1 (L)	3.63±0.64	3.29±0.90	0.34±0.49	2.166	0.059

FVC, forced vital capacity; FEV1, forced expiratory volume in one second.
p<0.05.