Table 4. Comparison of accessory muscles and lung capacities difference values between groups

	Non-smoker group (n=10)	Smoker group (n=10)	Difference	t	p
Sternocleidomastoid muscle (cm)	0.11±0.06	0.06±0.02	0.05±0.02	2.527	0.029
Pectoralis minor muscle (cm)	0.22±0.09	0.08±0.04	0.14±0.03	4.094	0.001*
FVC (L)	0.06±0.11	0.02±0.16	0.04±0.06	0.638	0.531
FEV1 (L)	0.34±0.49	0.10±0.33	0.24±0.19	1.256	0.225

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