Table 3.

Linier regression between FVC, FEV1 (as dependent variables) and LBM (as independent variable) in the underweight and normal weight girls.

Group		Variable	Beta coefficients	F	P	R	R2
Underweightn=29	FVC	Constant Lean body mass	0.154 0.070	18.44	0.00*	0.637	0.406
	FEV1	Constant Lean body mass	0.117 0.71	21.781	0.00*	0.668	0.447
Normal weightn=38	FVC	Constant Lean body mass	1.892 0.024	4.199	0.048*	0.323	0.104
	FEV1	Constant Lean body mass	1.71 0.028	6.450	0.016*	0.390	0.152

FVC=forced vital capacity: FEV1= forced expiratory volume in 1 second

^*p<0.05