표 3 / Table 3 응용 입술 트릴 훈련 전후 공기역학적 측정치 비교 / Comparison of aerodynamic measures before and after Modified Voiced Lip Trill training (MVoLT)

Parameters	Before		After		t-value
	M	SD	M	SD
EV (Liters)	2.405	1.453	2.747	1.218	–1.682
MPT (Sec)	13.834	6.486	18.507	8.132	–4.337***
MPAP (cmH2O)	6.773	1.870	8.309	2.297	–4.490***
MFPHO (Lit/Sec)	0.122	0.110	0.195	0.101	–5.315***

EV, expiratory volume; MPT, maximum phonation time; MPAP, mean peak air pressure; MFPHO, mean airflow during voicing; ^*** p<.001