Table 1.

Subject characteristics and resting pulmonary function (n = 29)

			Percentage predicted
	Mean ± s.d.	Range	Women†	Men‡
Age (years)	27 ± 7	18–42	—	—
Height (cm)	166 ± 7	155–179	—	—
Weight (kg)	59 ± 6	45–75	—	—
[Hb] (g dl−1)	13.8 ± 0.8	12.8–15.5	—	—
[Progesterone] (ng ml−1)§	0.8 ± 0.4	0.2–1.3	—	—
(ml kg−1 min−1)	57 ± 6	35–70	148 ± 5*	133 ± 6*
TLC (l)	5.6 ± 0.7	4.5–7.8	106 ± 3*	94 ± 2*
VC (l)	4.1 ± 0.5	2.8–5.4	106 ± 3*	88 ± 2*
FRC (l)	2.9 ± 0.3	1.8–4.1	102 ± 4	107 ± 4*
FEV1.0 (l)	3.4 ± 0.5	2.6–4.7	106 ± 3	87 ± 3*
MEF50 (l s−1)	4.4 ± 0.5	3.5–5.3	103 ± 3	91 ± 2*
DLCO (ml min−1 mmHg−1)‖	27.5 ± 4.5	19–39	88 ± 2*	78 ± 3*
DLCO/VA (ml min−1 mmHg−1 l−1)‖	6.72 ± 0.36	6.01–7.26	90 ± 2*	81 ± 3*

^§Standard progesterone range for follicular phase of menstrual cycle = 0.1–1.4 mg ml⁻¹.

^*Predicted value significantly different than obtained value, P < 0.05 (Student's unpaired t test).

^‖Measurement of DLCO obtained in only 23 of the 29 subjects.

^†Pulmonary function values in women as a percentage of normal values predicted for women of same age and height.

^‡Pulmonary function in women as a percentage of normal values predicted for men of same age and height. DLCO/V_A, ratio of DLCO to alveolar volume. Prediction equations from Crapo & Morris (1981) and Crapo, Morris & Gardner (1982).