Table 1

Anthropometric data

Subjects	Age yr	BMI kg·m⁻²	IVC %	FEV₁ %	FEV₁/IVC %
1	51	40.4	72.1	66	90.5
2	47	26.1	96.9	102	104
3	55	30.7	97.8	105	106
4	64	35.1	80.2	75.9	93.1
5	51	39.4	80	74.7	91.9
6	55	28.6	64.8	74.2	116
7	54	40.9	91.9	96.4	105
8	32	44.3	94	106	112.8
9	48	40.2	116	106	95.7
10	30	29.1	109.8	96.9	87.2
11	49	31.9	94.5	94.3	98.6
12	50	27.5	85.5	89.8	109
Mean±sd	48.83±9.47	34.52±6.28	90.29±14.73	90.6±14.28	100.81±9.33

BMI: body mass index
IVC: inspiratory vital capacity as per cent of predicted
FEV₁: forced expiratory volume in one second as per cent of predicted
FEV₁/IVC presented as %.