Effect of Liuzijue Exercise Combined with Elastic Band Resistance Exercise on Patients with COPD: A Randomized Controlled Trial

Table 1

Predictive equation for FEV1 and FVC.

Indicators	Gender	Formula
FEV1	Male	0.043(height100)-0.029age-2.49
	Female	0.0395(height100)-0.025age-2.6
FVC	Male	0.0576(height100)-0.026age-4.34
	Female	0.0443(height100)-0.026age-2.89

FEV1, forced expiratory volume in 1 second; FVC, forced volume capacity. Notes: height was expressed as meter.