Association of Serum Level of 25-Hydroxy Vitamin D Deficiency and Pulmonary Function in Healthy Individuals

Table 4

The results of healthy participants’ spirometry tests.

Lung function index	Measured lung function; (mean ± SD)	Predicted lung function (%)
(Lit)	2.60 (±0.47)	88.27 (2.41)
(Lit)	2.10 (±0.51)	89.41 (1.05)
(Lit/S)	3.33 (±0.55)	106.64 (3.71)
FEV1/FVC	91.41 (±3.64)	112.87 (5.89)

, forced vital capacity; , forced expiratory volume in 1 second; 25–75%, maximum mid-expiratory flow or forced expiratory flow 25–75%. All four spirometry indices were measured as liter (Lit), except for forced expiratory flow (FEF) that was measured as liter per second (Lit/S) and represented as mean (±SD).