Table 1.

Subjects and Test Results (n = 70)

Male/female, no. (%)	33 (47)/37 (53)
Age, y	61.4 ± 9.6
Body mass index, kg/m2	28.6 ± 7.6
Modified Medical Research Council dyspnea score (scale 0–4)	2.6 ± 0.73
Self-efficacy for walking score	3.11 ± 2.15
Self-efficacy for physical activity score	3.18 ± 1.04
FEV1, % of predicted (subjects with COPD)	31.5 ± 13.9
Total lung capacity, % of predicted (subjects with interstitial lung disease)	60.4 ± 12.2
Diffusing capacity of the lung for carbon monoxide, mL/min/mm Hg	42 ± 18.6
Physical activity level score	1.28 ± 0.17
6-min walk distance, m	305 ± 115
4-m gait speed, m/s	0.85 ± 0.21
Gait speed during 6-min walk test, m/s
1–2 min	1.01 ± 0.29
3–4 min	0.98 ± 0.31
5–6 min	1.00 ± 0.31

± Values are mean ± SD.