Effects and Mechanism of Bufei Yishen Formula in a Rat Chronic Obstructive Pulmonary Disease Model

Table 1

TV, PEF, and EF50 in three experimental rat groups (𝑥±𝑆).

Index	Group	0 weeks	4 weeks	8 weeks	12 weeks	16 weeks	20 weeks
TV (mL)	Control	2.86±0.46	2.88±0.33	2.89±0.34	2.90±0.32	2.91±0.36	2.92±0.24
	COPD	2.90±0.38	2.49±0.24	2.06±0.22	1.93±0.22	1.92±0.30	1.89±0.36
	BYF	2.97±0.46	2.52±0.21	2.04±0.33	2.11±0.18	2.14±0.25	2.22±0.36
PEF (mL/s)	Control	14.43±2.69	14.72±2.48	15.16±1.99	15.25±2.02	15.31±1.75	15.30±2.24
	COPD	14.11±2.47	11.28±2.00	9.99±2.33	9.90±1.96	9.93±2.40	10.02±2.18
	BYF	14.49±2.53	11.78±1.96	10.03±2.48	11.15±2.51	11.81±2.61	12.35±2.84
EF50 (mL/s)	Control	1.72±0.16	1.76±0.12	1.75±0.15	1.81±0.17	1.93±0.28	1.97±0.21
	COPD	1.73±0.11	1.49±0.13	1.02±0.17	0.96±0.20	0.99±0.17	1.05±0.17
	BYF	1.71±0.12	1.47±0.20	1.05±0.20	1.11±0.22	1.17±0.28	1.24±0.28