Table 2.

Average intervention effect on adjusted least squares mean values^a for continuous respiratory outcomes across 30-months of follow-up

Intervention Group	Borg Index (Dyspnea Severity)b	FEV1 (Breathing Capacity)c	MIP (Respiratory Muscle Strength)d
	Average Intervention Effect Across 30-Month Follow-Up Least Squares Means (95% CI)e
Physical Activity (PA)	1.84 (1.69, 1.88)	1.93 (1.82, 1.85)	63.21 (61.60, 64.82)
Health Education (HE)	1.79 (1.75, 1.93)	1.93 (1.81, 1.84)	62.77 (61.17, 64.37)
Difference (PA – HE)	0.05 (−0.07, 0.17)	0.00 (−0.05, 0.05)	0.44 (−1.58, 2.46)

CI, confidence interval; FEV1, Forced expiratory volume in 1 second; MIP, maximal inspiratory pressure; SD, standard deviation.

^aAdjusted for field center and gender

^bDyspnea scale of 0–10, recorded immediately after the 400-m walk test.

^cFEV1 in liters.

^dMIP in cm H2O.

^eThere was no statistical evidence of follow-up visit by intervention interaction (p≥.13 for all).